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Drug overview for CADUET (amlodipine besylate/atorvastatin calcium):
Generic name: AMLODIPINE BESYLATE/ATORVASTATIN CALCIUM (am-LOE-di-peen/a-TOR-va-STAT-in)
Drug class: Calcium Channel Blockers
Therapeutic class: Cardiovascular Therapy Agents
Amlodipine is a 1,4-dihydropyridine-derivative calcium-channel blocking Atorvastatin calcium, a hydroxymethylglutaryl-CoA (HMG-CoA) reductase agent with an intrinsically long duration of action. inhibitor (i.e., statin), is an antilipemic agent.
Atorvastatin is used as an adjunct to nondrug therapies (i.e., lifestyle modifications) for prevention of cardiovascular events and for the management of dyslipidemias.
Generic name: AMLODIPINE BESYLATE/ATORVASTATIN CALCIUM (am-LOE-di-peen/a-TOR-va-STAT-in)
Drug class: Calcium Channel Blockers
Therapeutic class: Cardiovascular Therapy Agents
Amlodipine is a 1,4-dihydropyridine-derivative calcium-channel blocking Atorvastatin calcium, a hydroxymethylglutaryl-CoA (HMG-CoA) reductase agent with an intrinsically long duration of action. inhibitor (i.e., statin), is an antilipemic agent.
Atorvastatin is used as an adjunct to nondrug therapies (i.e., lifestyle modifications) for prevention of cardiovascular events and for the management of dyslipidemias.
DRUG IMAGES
- CADUET 10 MG-10 MG TABLET
The following indications for CADUET (amlodipine besylate/atorvastatin calcium) have been approved by the FDA:
Indications:
Atherosclerotic cardiovascular disease
Heterozygous familial hypercholesterolemia
Homozygous familial hypercholesterolemia
Hypercholesterolemia
Hypertension
Hypertriglyceridemia
Mixed hyperlipidemia
Myocardial infarction prevention
Prevention of anginal pain associated with coronary artery disease
Prevention of anginal pain associated with vasospastic angina
Prevention of cerebrovascular accident
Primary dysbetalipoproteinemia
Primary prevention of coronary heart disease
Treatment to slow progression of coronary artery disease
Professional Synonyms:
Abnormally increased triglycerides in the blood
Acute MI prophylaxis
Acute myocardial infarction prophylaxis
AMI prophylaxis
Atherosclerosis
Atherosclerotic vascular disease
Cardiac infarct prophylaxis
Cardiac infarction prophylaxis
Cardiovascular disease related to atherosclerosis
Combined hypercholesterolemia and hypertriglyceridemia
Coronary heart disease primary prophylaxis
CVA prophylaxis
Elevated blood cholesterol level
Elevated blood pressure
Elevated triglyceride level
Essential hypertension
Familial heterozygous hypercholesterolemia
Familial homozygous hypercholesterolemia
Familial type 3 hyperlipoproteinemia
Fredrickson type III hyperlipoproteinemia
Heterozygous familial elevated blood cholesterol
Hyperpiesia
Hyperpiesis
Hypertensive disorder
Increased triglyceride levels
MI prophylaxis
Mixed dyslipidemia
Myocardial infarct prophylaxis
Myocardial infarction prophylaxis
Prevention of anginal pain associated with angina inversa
Prevention of anginal pain associated with CAD
Prevention of anginal pain associated with Prinzmetal angina
Prevention of anginal pain associated with variant angina
Primary prevention of cardiac ischemia
Primary prevention of ischemic heart disease
Primary prevention of myocardial infarct
Stroke prophylaxis
Systemic arterial hypertension
Treatment to slow progression of CAD
Type III hyperlipoproteinemia
Indications:
Atherosclerotic cardiovascular disease
Heterozygous familial hypercholesterolemia
Homozygous familial hypercholesterolemia
Hypercholesterolemia
Hypertension
Hypertriglyceridemia
Mixed hyperlipidemia
Myocardial infarction prevention
Prevention of anginal pain associated with coronary artery disease
Prevention of anginal pain associated with vasospastic angina
Prevention of cerebrovascular accident
Primary dysbetalipoproteinemia
Primary prevention of coronary heart disease
Treatment to slow progression of coronary artery disease
Professional Synonyms:
Abnormally increased triglycerides in the blood
Acute MI prophylaxis
Acute myocardial infarction prophylaxis
AMI prophylaxis
Atherosclerosis
Atherosclerotic vascular disease
Cardiac infarct prophylaxis
Cardiac infarction prophylaxis
Cardiovascular disease related to atherosclerosis
Combined hypercholesterolemia and hypertriglyceridemia
Coronary heart disease primary prophylaxis
CVA prophylaxis
Elevated blood cholesterol level
Elevated blood pressure
Elevated triglyceride level
Essential hypertension
Familial heterozygous hypercholesterolemia
Familial homozygous hypercholesterolemia
Familial type 3 hyperlipoproteinemia
Fredrickson type III hyperlipoproteinemia
Heterozygous familial elevated blood cholesterol
Hyperpiesia
Hyperpiesis
Hypertensive disorder
Increased triglyceride levels
MI prophylaxis
Mixed dyslipidemia
Myocardial infarct prophylaxis
Myocardial infarction prophylaxis
Prevention of anginal pain associated with angina inversa
Prevention of anginal pain associated with CAD
Prevention of anginal pain associated with Prinzmetal angina
Prevention of anginal pain associated with variant angina
Primary prevention of cardiac ischemia
Primary prevention of ischemic heart disease
Primary prevention of myocardial infarct
Stroke prophylaxis
Systemic arterial hypertension
Treatment to slow progression of CAD
Type III hyperlipoproteinemia
The following dosing information is available for CADUET (amlodipine besylate/atorvastatin calcium):
Dosage of amlodipine besylate is expressed in terms of amlodipine.
Dosage modifications may be necessary when atorvastatin is used concomitantly with certain drugs. (See Drug Interactions.)
Dosage modifications may be necessary when atorvastatin is used concomitantly with certain drugs. (See Drug Interactions.)
Amlodipine besylate is administered orally. Amlodipine generally can be given without regard to meals. Atorvastatin is administered orally once daily.
While food can reduce the systemic bioavailability of atorvastatin, such reduction does not appear to affect the drug's antilipemic activity, and atorvastatin may be taken without regard to meals. Although the manufacturer suggests that atorvastatin can be administered without regard to the time of day, the drug was given in the evening or at bedtime in most studies, when maximum HMG-CoA reductase inhibition occurs.
While food can reduce the systemic bioavailability of atorvastatin, such reduction does not appear to affect the drug's antilipemic activity, and atorvastatin may be taken without regard to meals. Although the manufacturer suggests that atorvastatin can be administered without regard to the time of day, the drug was given in the evening or at bedtime in most studies, when maximum HMG-CoA reductase inhibition occurs.
DRUG LABEL | DOSING TYPE | DOSING INSTRUCTIONS |
---|---|---|
CADUET 10 MG-10 MG TABLET | Maintenance | Adults take 1 tablet by oral route once daily |
DRUG LABEL | DOSING TYPE | DOSING INSTRUCTIONS |
---|---|---|
AMLODIPINE-ATORVAST 10-10 MG | Maintenance | Adults take 1 tablet by oral route once daily |
The following drug interaction information is available for CADUET (amlodipine besylate/atorvastatin calcium):
There are 5 contraindications.
These drug combinations generally should not be dispensed or administered to the same patient. A manufacturer label warning that indicates the contraindication warrants inclusion of a drug combination in this category, regardless of clinical evidence or lack of clinical evidence to support the contraindication.
Drug Interaction | Drug Names |
---|---|
Simvastatin (Greater Than 20 mg)/Amlodipine SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient. MECHANISM OF ACTION: Amlodipine may inhibit the metabolism of simvastatin by CYP3A4.(1-7) Levamlodipine is the active isomer of amlodipine.(8) CLINICAL EFFECTS: Concurrent amlodipine may result in elevated levels of simvastatin,(1-7) which may result in myopathy and rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Do not exceed a dosage of 20 mg daily of simvastatin in patients receiving concurrent therapy with amlodipine.(1-4) Consider separating the administration times of amlodipine and simvastatin in patients receiving concurrent therapy with amlodipine and simvastatin doses of 20 mg or less.(5) If concurrent therapy is deemed medically necessary, monitor patients for signs and symptoms of myopathy/rhabdomyolysis, including muscle pain/tenderness/weakness, fever, unusual tiredness, changes in the amount of urine, and/or discolored urine. DISCUSSION: In a study in 8 patients with hypercholesterolemia and hypertension, 4 weeks of concurrent administration of amlodipine (5 mg daily) increased the maximum concentration (Cmax) and area-under-curve (AUC) of simvastatin (5 mg daily) by 43% and 28%, respectively. There were no changes in the lipid-lowering affects of simvastatin.(6) In a study in 17 subjects, administration of amlodipine (5 mg daily) 4 hours after simvastatin (5 mg daily) resulted in Cmax and AUC values of simvastatin that were 63.2% and 66.0%, respectively, of values obtained with simultaneous dosing.(5) Acute renal failure and rhabdomyolysis was reported in patient maintained on amlodipine and alprazolam two days after beginning the maximal dose of simvastatin.(7) |
EZETIMIBE-SIMVASTATIN, FLOLIPID, SIMVASTATIN, VYTORIN, ZOCOR |
Atorvastatin; Lovastatin; Simvastatin/Glecaprevir-Pibrentasvir SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient. MECHANISM OF ACTION: Glecaprevir-pibrentasvir may inhibit OATP1B1 and OATP1B3, resulting in increased concentrations of atorvastatin, lovastatin, or simvastatin.(1-3) CLINICAL EFFECTS: Concurrent use of glecaprevir-pibrentasvir may result in elevated levels of and toxicity from atorvastatin, lovastatin, and simvastatin including rhabdomyolysis.(1-3) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The US manufacturers of glecaprevir-pibrentasvir and of atorvastatin state that coadministration of glecaprevir-pibrentasvir with atorvastatin, lovastatin, or simvastatin is not recommended.(1,4) The Canadian manufacturer of glecaprevir-pibrentasvir also states that the coadministration of glecaprevir-pibrentasvir and lovastatin is not recommended.(5) If concurrent use is deemed medically necessary, instruct patients to report symptoms of muscle pain, tenderness, or weakness. The Canadian and UK manufacturers of glecaprevir-pibrentasvir and of atorvastatin state that coadministration of glecaprevir-pibrentasvir with atorvastatin or simvastatin is contraindicated.(2,3,5,6) DISCUSSION: In a study in 11 healthy subjects, glecaprevir-pibrentasvir (400/120 mg daily) increased the maximum concentration (Cmax) and area-under-curve (AUC) of atorvastatin (10 mg daily) by 22-fold and 8.28-fold, respectively. In a study in 12 healthy subjects, glecaprevir-pibrentasvir (400/120 mg daily) increased the AUC of lovastatin (10 mg once daily) by 1.70-fold. The Cmax and AUC of lovastatin acid was increased by 5.73-fold and 4.10-fold. In a study in 12 healthy subjects, glecaprevir-pibrentasvir (400/120 mg daily) increased the Cmax and AUC of simvastatin (5 mg once daily) by 1.99-fold and 2.32-fold, respectively. The Cmax and AUC of simvastatin acid was increased by 10.7-fold and 4.48-fold, respectively. |
MAVYRET |
Atorvastatin (Less Than or Equal To 20 mg)/Gemfibrozil SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient. MECHANISM OF ACTION: Unknown. CLINICAL EFFECTS: Concurrent administration of HMG-CoA reductase inhibitors and fibric acid derivatives has been associated with severe myopathy, rhabdomyolysis and acute renal failure. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: According to the 2018 ACC/AHA Blood Cholesterol Guidelines, gemfibrozil is contraindicated in patients on statin therapy. According to the 2016 AHA Scientific Statement Recommendations for Management of Clinically Significant Drug-Drug Interactions with Statins and Select Agents Used in Patients with Cardiovascular Disease, atorvastatin dose should be initiated at 10 mg daily and should not exceed 20 mg daily when used concurrently with gemfibrozil. According to 2013 ACC/AHA Blood Cholesterol Guidelines, gemfibrozil should not be initiated in patients on statin therapy. Fenofibrate may be considered with low or moderate intensity statin therapy only if benefits outweigh the risks. The US, Australian, Canadian, and UK manufacturers of gemfibrozil state that use with HMG CO-A reductase inhibitors does not outweigh the risks of severe myopathy, rhabdomyolysis, and acute renal failure. The US, Canadian, and UK manufacturers of atorvastatin state that concurrent use of gemfibrozil should be avoided. Instruct patients receiving concurrent therapy to report any unexplained muscle pain, tenderness or weakness. If muscular symptoms develop, monitor serum creatine kinase levels and renal function. One or both agents may need to be discontinued. DISCUSSION: Gemfibrozil has been shown to increase levels of cerivastatin, lovastatin, pravastatin, rosuvastatin, and simvastatin. Administration of gemfibrozil with cerivastatin, lovastatin, and simvastatin has been associated with myolysis and rhabdomyolysis (muscle pain, tenderness, and weakness). Although the reaction has been reported with the statins alone, the incidence increases dramatically with concurrent administration of gemfibrozil. Concurrent fenofibrate (145 mg) with atorvastatin (20 mg) decreased the atorvastatin area-under-curve (AUC) by 17% (range from 67% decrease to 44% increase). Atorvastatin maximum concentration (Cmax) and the kinetics of fenofibrate were not significantly affected. The risk of rhabdomyolysis with concurrent fibrate and HMG CoA reductase inhibitor therapy appears to be greater with gemfibrozil. Analysis of the FDA Adverse Event Report database indicates that the rate is 30 times higher with gemfibrozil than with fenofibrate. In an analysis of data from the Veteran's Administration over a 2 year period, there were 149 reports of rhabdomyolysis in 93,677 (0.16%) patients receiving concurrent gemfibrozil and statin therapy compared with no reports in 1,830 patients receiving concurrent fenofibrate and statin therapy. In a retrospective cohort study of 252,460 patients, concurrent use of statins and fibrates increased the risk of rhabdomyolysis, especially in patients with diabetes mellitus. The risk of hospitalization for patients aged 65 or older with diabetes mellitus, treated with a statin and fibrate, increased 48-fold compared to statin monotherapy. In a retrospective study, of 468 patients with a diagnosis of myopathy, 61 received a statin prior to their diagnosis. Forty-one of these patients developed confirmed myopathy, creatinine kinase more than or equal to 1000 IU/L. |
GEMFIBROZIL, LOPID |
Atorvastatin; Lovastatin; Simvastatin/Lonafarnib SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient. MECHANISM OF ACTION: Lonafarnib may inhibit the metabolism of atorvastatin, lovastatin and simvastatin by CYP3A4.(1-4) CLINICAL EFFECTS: Concurrent use of lonafarnib may result in elevated levels of atorvastatin, lovastatin and simvastatin and increase the risk of rhabdomyolysis.(1-4) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Concurrent use of strong CYP3A4 inhibitors with atorvastatin, lovastatin or simvastatin is contraindicated.(1-4) Therapy with atorvastatin, lovastatin or simvastatin should be suspended during lonafarnib therapy. Patients should be carefully monitored for and instructed to report any signs of myopathy. DISCUSSION: In a study in healthy subjects, concomitant administration of midazolam (3 mg single dose) with lonafarnib (100 mg twice daily for 5 days) increased the concentration maximum (Cmax) and area-under-curve (AUC) of midazolam by 180% and 639%, respectively.(4) |
ZOKINVY |
Lemborexant (Greater Than 5 mg)/Weak CYP3A4 Inhibitors SEVERITY LEVEL: 1-Contraindicated Drug Combination: This drug combination is contraindicated and generally should not be dispensed or administered to the same patient. MECHANISM OF ACTION: Inhibitors of CYP3A4 may inhibit the metabolism of lemborexant.(1) CLINICAL EFFECTS: Concurrent use of an inhibitor of CYP3A4 may result in increased levels of and effects from lemborexant, including somnolence, fatigue, CNS depressant effects, daytime impairment, headache, and nightmare or abnormal dreams.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The maximum recommended dose of lemborexant with concurrent use of a weak CYP3A4 inhibitors should not exceed 5 mg per dose.(1) DISCUSSION: Lemborexant is a CYP3A4 substrate. In a PKPB model, concurrent use of lemborexant with itraconazole increased area-under-curve (AUC) and concentration maximum (Cmax) by 3.75-fold and 1.5-fold, respectively. Concurrent use of lemborexant with fluconazole increased AUC and Cmax by 4.25-fold and 1.75-fold, respectively.(1) Weak inhibitors of CYP3A4 include: alprazolam, amiodarone, amlodipine, asciminib, azithromycin, Baikal skullcap, berberine, bicalutamide, blueberry, brodalumab, cannabidiol, capivasertib, chlorzoxazone, cilostazol, cimetidine, ciprofloxacin, clotrimazole, cranberry, cyclosporine, daclatasvir, daridorexant, delavirdine, dihydroberberine, diosmin, everolimus, flibanserin, fosaprepitant, fostamatinib, ginkgo, givinostat, glecaprevir/pibrentasvir, goldenseal, grazoprevir, isoniazid, istradefylline, ivacaftor, lacidipine, lapatinib, larotrectinib, lazertinib, leflunomide, levamlodipine, linagliptin, lomitapide, lurasidone, mavorixafor, olaparib, osilodrostat, palbociclib, pazopanib, peppermint oil, piperine, propiverine, propofol, ranitidine, ranolazine, resveratrol, roxithromycin, rucaparib, selpercatinib, simeprevir, sitaxsentan, skullcap, suvorexant, teriflunomide, ticagrelor, tolvaptan, trofinetide, viloxazine, and vonoprazan.(1,2) |
DAYVIGO |
There are 20 severe interactions.
These drug interactions can produce serious consequences in most patients. Actions required for severe interactions include, but are not limited to, discontinuing one or both agents, adjusting dosage, altering administration scheduling, and providing additional patient monitoring. Review the full interaction monograph for more information.
Drug Interaction | Drug Names |
---|---|
Atorvastatin (Less Than or Equal To 10 mg); Lovastatin/Cyclosporine SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Unknown. CLINICAL EFFECTS: Myopathy and muscle aches, tenderness and weakness (rhabdomyolysis) may occur with concurrent administration of HMG-CoA reductase inhibitors and cyclosporine. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Avoid the concurrent use of atorvastatin(1) or lovastatin(2) with cyclosporine. If concurrent use is necessary, the dose of atorvastatin should be limited to 10 mg or less.(3) When possible use alternative therapy, such as fluvastatin at dosages of 20 mg BID or less,(4) pravastatin at dosages of 20 mg daily or less,(5) or rosuvastatin at dosages of 5 mg daily or less.(6) Patients receiving concurrent therapy should be instructed to report symptoms of muscle pain, tenderness, or weakness. DISCUSSION: Since this reaction may occur with HMG-CoA-reductase inhibitors alone, a causal relationship is difficult to establish. However, the incidence of myopathy and rhabdomyolysis appears to increase with concurrent administration of cyclosporine. In a study in 18 renal transplant patients, atorvastatin had no effect on the pharmacokinetics of cyclosporine.(7) In a study in six liver transplant patients, atorvastatin increased the area-under-curve (AUC) of cyclosporine by 10%, which was not considered clinically significant.(8) In a study in 21 renal transplant patients, cyclosporine increased atorvastatin levels by 6.4-fold when compared to historical controls. The AUC of cyclosporine decreased by 9.5%.(9) Concurrent administration of atorvastatin (10 mg) and cyclosporine (5.2 mg/kg/day) increased atorvastatin AUC and Cmax by 8.7-fold and 10.7-fold, respectively.(1) In a study in 33 renal patients, subjects were randomized to receive either atorvastatin or cerivastatin. In the cerivastatin group, there were no significant effects on cyclosporine levels. In the atorvastatin group, 4 of 10 subjects had changes in cyclosporine trough levels of 25% or more.(10) In a study, administration of cerivastatin (0.2 mg) in 12 renal transplant patients receiving cyclosporine was compared to 12 healthy control subjects not receiving cyclosporine. Plasma concentration of cerivastatin and its metabolites increased 3-fold to 5-fold.(11) In a study, administration of pravastatin in 11 heart transplant patients receiving cyclosporine was compared to 8 control subjects not receiving cyclosporine. Pravastatin AUC and Cmax were 7-8-fold and 12-fold higher, respectively, in subjects taking cyclosporine.(12) In a double-blind, randomized, cross-over study in 44 renal transplant patients, neither lovastatin nor pravastatin affected cyclosporine levels. Pravastatin levels after 1 day and after 28 days of concurrent therapy were 5-fold higher than historical controls. Lovastatin levels accumulated over the course of the study and by Day 28 were 20-fold higher than historical controls.(13) In a study in 31 renal transplant patients, neither pravastatin nor simvastatin affected cyclosporine levels.(14) In contrast, in a study in 44 heart transplant subjects, cyclosporine clearance was increased following the addition of simvastatin.(15) Several studies have found no effect from fluvastatin on cyclosporine pharmacokinetics.(16-20) One of these also noted no affects of cyclosporine on fluvastatin levels.(15) In contrast, a study that compared the administration of fluvastatin in 10 heart transplant to 10 healthy control subjects found that fluvastatin AUC and Cmax were 2.55-fold and 3.10-fold higher than in control subjects.(21) In an open-label study in 10 heart transplant patients, concurrent cyclosporine increased rosuvastatin AUC and Cmax by 7.1-fold and 10.6-fold, respectively, when compared to historical controls. There were no effects on cyclosporine levels.(22) Rhabdomyolysis has been reported with concurrent cyclosporine and atorvastatin,(23,24) cerivastatin,(25) and lovastatin.(26-30) In a PKPB model, concurrent use of atorvastatin (10 mg daily) with cyclosporine (125 mg daily for 2 months) increased the simulated Cmax ratio and AUC ratio of atorvastatin by 6.85 and 3.92, respectively.(31) |
CYCLOSPORINE, CYCLOSPORINE MODIFIED, GENGRAF, NEORAL, SANDIMMUNE |
HMG-CoA Reductase Inhibitors/Niacin (Greater Than or Equal To 250 mg) SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Unknown. CLINICAL EFFECTS: Myopathy and rhabdomyolysis (muscle aches, tenderness, and weakness) have been associated with concomitant administration of HMG-CoA reductase inhibitors and niacin. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: The benefit of further alterations in lipid levels with combined use of statins and lipid-lowering dosages of niacin (<= 1000 mg/day) should be carefully weighed against the potential risks.(1-10) The US manufacturer of simvastatin states that dosages of niacin should not exceed 1000 mg daily in patients of Chinese descent.(6) DISCUSSION: The risk of myopathy is increased during concurrent use of HMG-CoA reductase inhibitors and niacin.(1-10) Concomitant administration of niacin with the immediate release formulation of fluvastatin had no effect on fluvastatin pharmacokinetics. Myopathy was not observed in a trial of concurrent fluvastatin and niacin in 74 patients. Concurrent fluvastatin and niacin results in additive effects on total cholesterol and LDL cholesterol.(9) In uncontrolled studies, most subjects who developed myopathy while on lovastatin were also taking cyclosporine, gemfibrozil, or niacin.(1) However, a systematic review showed comparable rates of adverse event reports (AERs) including serious adverse events, hepatotoxicity, or rhabdomyolysis for the combination of lovastatin with niacin-extended release (ER) pill relative to either agent alone or to other statins. Therefore, these results did not support a clinically significant adverse drug interaction between niacin-ER and statins.(14) In clinical trials involving small numbers of patients, no myopathy was reported with concurrent pravastatin and niacin.(10) There are case reports of myopathy during concurrent lovastatin and niacin.(2,11,12) Interim HPS2 results showed a higher rate of myopathy in patients of Chinese descent (0.43%) when compared to patients of non-Chinese descent (0.03%) in patients taking simvastatin (40 mg) with cholesterol-lowering doses of niacin.(7) Kosoglou suggests that there is a small pharmacokinetic drug interaction between ER niacin and ezetimibe/simvastatin but is not clinically significant.(15) However, the HPS2-THRIVE showed a significant four-fold excess risk of myopathy with the addition of ER niacin 2g plus laropiprant 40mg daily (ERN/LRPT) to simvastatin 40mg daily (with or without ezetimibe 10mg daily). This additional risk is particularly prevalent among Chinese descent versus European descent.(16) The AIM-HIGH trial randomized 3414 patients to receive niacin extended-release 1500-2000 mg per day or placebo in addition to current therapy of simvastatin 40-80 mg per day and ezetimibe 10 mg per day if needed to achieve a goal LDL of 40-80 mg/dL. Patients were followed for a mean of 3 years. The primary efficacy endpoint of composite of the first event of death from coronary heart disease, nonfatal myocardial infarction, ischemic stroke, hospitalization (greater than 23 hours) for an acute coronary syndrome, or symptom-driven coronary or cerebral vascularization, occurred in 16.4% of patients in the niacin group and 16.2% of patients in the placebo group (p=0.80).(17) The HPS2-THRIVE trial randomized 25,673 patients to receive extended-release niacin 2000 mg with laropiprant 40 mg per day or placebo in addition to current therapy of simvastatin 40 mg per day. Patients were followed for a median of 3.9 years. The primary efficacy endpoint of first major vascular event, defined as a major coronary event (nonfatal myocardial infarction or death from coronary causes), stroke of any type, or coronary or noncoronary vascularization, occurred in 13.2% of patients in the niacin-laropiprant group and 13.7% of patients in the placebo group (p=0.29).(18) A post-hoc analysis of the AIM-HIGH trial showed significant lowering of triglycerides (59 mg/dL) in the extended-release niacin (ERN) group compared to the placebo group (20mg/dL). High density lipoprotein levels showed improvement in the ERN group compared to the placebo (11.3mg/dL vs. 4.7 mg/dL, respectively). The incidence of cardiovascular disease events was similar in both groups. However, all-cause mortality was significantly higher in the ERN group (15.4%) versus the control group (9.2%).(19) A meta-analysis investigating the effects of niacin for primary and secondary prevention of cardiovascular events suggests that niacin does not reduce mortality or rates of myocardial infarctions or strokes. Increased side effects are reported with niacin. Benefits from niacin therapy in the prevention of cardiovascular disease events are unlikely.(20) The AIM HIGH trial investigated the effects of ERN added to simvastatin/ezetimibe on glucose and insulin values. ERN increased fasting glucose from baseline to 1 year in patients with normal (7.9 vs 4.3 mg/dL, respectively) and impaired fasting glucose (4.1 vs 1.4 mg/dL, respectively). There was an increased risk of progressing from normal to impaired fasting glucose in the ERN (58.6% cases) versus placebo (41.5% cases).(21) One or more of the drug pairs linked to this monograph have been included in a list of interactions that could be considered for classification as "non-interruptive" in EHR systems. This DDI subset was vetted by an expert panel commissioned by the U.S. Office of the National Coordinator (ONC) for Health Information Technology. |
NIACIN, NIACIN ER, NIACOR, NICOTINIC ACID |
Selected Calcium Channel Blockers/Rifamycins SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Multiple mechanisms appear to be involved. Rifampin may increase the hepatic metabolism of the calcium channel blockers, increase first-pass hepatic metabolism of oral calcium channel blockers, and decrease the protein binding of calcium channel blockers.(1-8) CLINICAL EFFECTS: Concurrent use of rifampin may decrease levels and effectiveness of the calcium channel blocker.(1-8) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Observe the patient for a decrease in the therapeutic effects of the calcium channel blocker if rifampin is initiated. The dose of the calcium channel blocker may need to be adjusted if rifampin is initiated or discontinued.(1-7) The US manufacturer of diltiazem states that concurrent use should be avoided.(2) The manufacturer of lercanidipine states that concurrent use is not recommended.(10) DISCUSSION: In healthy subjects, pretreatment with rifampin (600 mg daily) reduced the concentration of a single dose of isradipine (5 mg) below a detectable level. The study concluded that the concentrations and effects of isradipine may be either reduced or absent as a result of increased isradipine metabolism.(1) Concurrent administration of rifampin has been shown to lower diltiazem levels below detectable limits.(2) In a study in 5 healthy subjects, pretreatment with rifampin (6 days) decreased the area-under-curve (AUC) of a single oral dose of nilvadipine (4 mg) by 96.5%. Pretreatment with rifampin abolished nilvadipine-induced hypotensive effects and tachycardia.(3) A study in six subjects examined the effects of pretreatment with rifampin (600 mg daily for 15 days) on single doses of verapamil (10 mg intravenously or 120 mg orally). Rifampin significantly decreased the maximum concentration (Cmax) and AUC of oral verapamil and resulted in no changes in the P-R interval. There were small decreases in the AUC of intravenous verapamil.(4) In a study in 8 male subjects, pretreatment with rifampin (600 mg daily for 15 days) increased the systemic clearance of S-verapamil by 1.3-fold and the apparent oral-clearance of S-verapamil by 32-fold. The bioavailability of S-verapamil decreased 25-fold. The effect of oral verapamil on AV conduction was almost abolished. No significant changes were noted for intravenous administration of verapamil.(5) In a study in 16 hypertensive chronic kidney disease patients, amlodipine levels decreased an average of 82% after initiation of rifampin. In eight of the 16 patients, the levels were undetectable.(9) There have been case reports of decreased effectiveness of barnidipine,(6) manidipine,(6) nisoldipine,(6) and verapamil(7,8) during concurrent rifampin therapy. |
MYCOBUTIN, PRIFTIN, RIFABUTIN, RIFADIN, RIFAMPIN, TALICIA |
Atorvastatin; Cerivastatin/Nefazodone SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Nefazodone has been shown to inhibit CYP3A4. Nefazodone may inhibit the metabolism of HMG-CoA reductase inhibitors metabolized at this isoenzyme.(1) CLINICAL EFFECTS: The concurrent administration of nefazodone with a HMG-CoA reductase inhibitor metabolized by CYP3A4 may result in elevated levels of the HMG CoA reductase inhibitor. Elevated levels of the HMG-CoA reductase inhibitor may result in rhabdomyolysis.(1-4) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: If concurrent therapy is warranted, the dosage of atorvastatin and cerivastatin should be reduced when administered with nefazodone.(1) Patients should be carefully monitored for signs and symptoms of muscle pain, tenderness, or weakness.(2) Atorvastatin or cerivastatin may need to be discontinued. Fluvastatin and pravastatin, HMG-CoA reductase inhibitors that are not extensively metabolized by CYP3A4, may be alternatives to other HMG-CoA reductase inhibitors in patients taking nefazodone.(1) DISCUSSION: In a single-dose study, the administration of simvastatin (40 mg) or atorvastatin (40 mg) following six days of nefazodone (200 mg twice daily) resulted in a 20-fold increase in simvastatin and simvastatin acid levels and 3- to 4-fold increase in atorvastatin and atorvastatin lactone levels.(1) There are case reports of rhabdomyolysis in patients receiving concurrent nefazodone with lovastatin(1) and simvastatin(1,3-6) therapy. |
NEFAZODONE HCL |
Selected Macrolides/Selected Calcium Channel Blockers SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Some macrolides may inhibit metabolism of calcium channel blockers.(1) In some patients, calcium channel blockers may inhibit the metabolism of the macrolide. Some macrolides have been associated with cardiac arrhythmias, including torsades de pointes.(2) CLINICAL EFFECTS: In some patients, concurrent use may result in elevated levels of and effects from the calcium channel blockers, including hypotension,(2,3) shock,(2) and acute kidney failure.(3) In others, elevated levels of the macrolide may occur, which may increase the risk of sudden death from cardiac causes.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: If possible, avoid the concurrent use of calcium channel blockers with macrolides that inhibit CYP.(1,2) Depending on the infection, azithromycin may be an alternative in patients maintained on calcium channel blockers.(1) If concurrent use is required, monitor patients for and instruct them to report signs of hypotension, cardiac arrhythmias, or renal failure. DISCUSSION: A retrospective review examined sudden cardiac death in Tennessee Medicaid patients. Erythromycin use increased the risk of sudden cardiac death by 1.79-fold. Concurrent use of erythromycin with a potent inhibitor of CYP3A4 (diltiazem, fluconazole, itraconazole, ketoconazole, troleandomycin, or verapamil) increased the risk of sudden cardiac death by 5.35-fold when compared to patients receiving no antibiotic therapy.(2) In a retrospective review of residents of Ontario, Canada aged 66 or older who were receiving calcium channel blockers, use of clarithromycin and erythromycin were associated with an increased risk of hospitalization for hypotension (odds ratio 3.7 and 5.8, respectively). There was no association between use of azithromycin and hospitalization for hypotension.(2) In a retrospective review of residents of Ontario, Canada aged 65 or older who were receiving calcium channel blockers, use of clarithromycin was associated with an increased risk of hospitalization with acute kidney injury when compared to use of azithromycin (0.44% of patients versus 0.22% - odds ratio 1.98). Risk was highest with the use of nifedipine (odds ratio 5.33). Use of clarithromycin was also associated with a higher risk of hospitalization with hypotension (0.12% of patients versus 0.07%, odds ratio 1.60) and all-cause mortality (1.02% of patients versus 0.59%, odds ratio 1.74).(3) In a cross-over study in 12 healthy male subjects, the administration of a single dose of felodipine (10 mg extended-release) after four doses of erythromycin (250 mg) resulted in an increase in felodipine area-under-curve (AUC), maximum concentration (Cmax), and half-life by 149%, 127%, and 61%, respectively. Concurrent administration increased dehydrofelodipine AUC, Cmax, and half-life by 92%, 56%, and 93%, respectively, when compared to felodipine administration alone. Concurrent administration of felodipine and erythromycin decreased felodipine M3 metabolite AUC and Cmax concentrations by 41% and 36%, respectively. The extent of the interaction was extremely variable between subjects.(4) In a case report, a 43 year-old female developed palpitations, flushing, ankle edema, and hypotension 2-4 days after the addition of erythromycin to felodipine therapy. Felodipine levels were found to be elevated.(5) In a case report, a 77 year-old male developed shock, heart block, and multi-organ failure two days after the addition of clarithromycin to nifedipine therapy.(6) In a case report, a 76 year-old female developed hypotension, bradycardia, shortness of breath, and weakness two days after the addition of telithromycin to verapamil therapy.(7) |
CLARITHROMYCIN, CLARITHROMYCIN ER, E.E.S. 200, E.E.S. 400, ERY-TAB, ERYPED 200, ERYPED 400, ERYTHROCIN LACTOBIONATE, ERYTHROCIN STEARATE, ERYTHROMYCIN, ERYTHROMYCIN ESTOLATE, ERYTHROMYCIN ETHYLSUCCINATE, ERYTHROMYCIN LACTOBIONATE, LANSOPRAZOL-AMOXICIL-CLARITHRO, OMECLAMOX-PAK, VOQUEZNA TRIPLE PAK |
Amlodipine; Levamlodipine/Conivaptan SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Conivaptan may inhibit the metabolism of amlodipine via CYP3A4.(1) Levamlodipine is the active isomer of amlodipine.(2) CLINICAL EFFECTS: Concurrent use of amlodipine or levamlodipine and conivaptan may result in increased levels of amlodipine or levamlodipine, which may lead to increased clinical effects and toxicity.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer of conivaptan states that concurrent use of agents primarily metabolized by CYP3A4, such as amlodipine or levamlodipine, should be avoided. Amlodipine or levamlodipine may be initiated no sooner than 1 week after the infusion of conivaptan is completed.(1) DISCUSSION: Conivaptan is a potent inhibitor of CYP3A4. In an evaluation of the combination of oral conivaptan (80 mg/day) and amlodipine, the area-under-curve (AUC) and half life of amlodipine were both increased 2-fold.(1) |
CONIVAPTAN-D5W, VAPRISOL-5% DEXTROSE |
HMG-CoA Reductase Inhibitors/Daptomycin SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: The exact mechanism is unknown but may involve additive or synergistic effects on skeletal muscle. CLINICAL EFFECTS: Concurrent use of HMG-CoA reductase inhibitors and daptomycin can result in elevated creatinine phosphokinase (CPK) levels and skeletal muscle effects.(1) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. Patients on fluvastatin who are CYP2C9 intermediate or poor metabolizers may have increased fluvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: The manufacturer of daptomycin recommends considering suspending HMG-CoA reductase inhibitor therapy in patients receiving daptomycin. CPK levels should be monitored more frequently than the weekly standard frequency in patients who have recently received HMG-CoA reductase therapy or in whom concurrent therapy is warranted. Closely monitor patients for the development of muscle pain and/or weakness.(1) DISCUSSION: In the Phase 3 Staphylococcus aureus bacteremia/endocarditis trial, 5 of 22 patients who received prior or concurrent HMG Co-A reductase inhibitor therapy developed CPK elevations greater than 500 U/L. At a dose of 6 mg/kg of daptomycin, a total of 11 patients developed CPK elevations greater than 500 U/L. Of these, 4 had prior or concurrent HMG Co-A reductase therapy. Rhabdomyolysis in patients treated concurrently with HMG Co-A reductase inhibitors has been reported in post-marketing experience.(1) In 20 healthy subjects, concurrent simvastatin (40 mg daily) and daptomycin (4 mg/kg daily) was not associated with a higher incidence of adverse effects when compared to 10 subjects receiving placebo.(1) |
DAPTOMYCIN, DAPTOMYCIN-0.9% NACL |
Dantrolene/Calcium Channel Blockers SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: The exact mechanism is unknown. Dantrolene may decrease the release of calcium from the sarcoplasmic reticulum, resulting in additive or synergistic effects with calcium channel blockers.(1) CLINICAL EFFECTS: Concurrent use of dantrolene and calcium channel blockers may result in cardiogenic shock.(2) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer of dantrolene states that concurrent use with calcium channel blockers during the management of malignant hyperthermia crisis is not recommended.(2) DISCUSSION: Cardiogenic shock in patients treated simultaneously with verapamil and dantrolene is rare but has been reported.(2,3) Concurrent use of dantrolene and verapamil in swine has been reported to result in cardiogenic shock and hyperkalemia.(4) In dogs, the combination has been reported to cause hyperkalemia.(5) The combination of diltiazem and dantrolene has been reported to cause adverse cardiovascular effects in swine.(6) A study in swine showed no adverse effects from the combination of dantrolene and nifedipine(6) and one patient who experience cardiogenic shock with dantrolene and verapamil had no adverse effects with the combination of dantrolene and nifedipine;(3) however, the US manufacturer cannot endorse the safety of the combination.(2) |
DANTRIUM, DANTROLENE SODIUM, REVONTO, RYANODEX |
Selected HMG-CoA Reductase Inhibitors/Stiripentol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Stiripentol may inhibit the metabolism of some HMG-CoA reductase inhibitors by CYP3A4.(1) CLINICAL EFFECTS: Concurrent use of stiripentol may result in elevated levels of HMG-CoA reductase inhibitors that are metabolized by CYP3A4, which may result in rhabdomyolysis.(1) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: The UK manufacturer of stiripentol states that concurrent use of HMG-CoA reductase inhibitors metabolized by CYP3A4 should d be avoided unless strictly necessary.(1) DISCUSSION: Stiripentol has been shown to inhibit CYP3A4.(1) |
DIACOMIT |
Lomitapide (Less Than or Equal To 30 mg)/Weak CYP3A4 Inhibitors SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Weak inhibitors of CYP3A4 may inhibit the metabolism of lomitapide.(1) Lomitapide is very susceptible to CYP3A4 inhibition. For example, in an interaction study with a strong CYP3A4 inhibitor (ketoconazole) lomitapide exposure was increased 27-fold.(2) Thus even weak CYP3A4 inhibitors may affect lomitapide exposure (AUC, area-under-curve). CLINICAL EFFECTS: Concurrent use of a weak inhibitor of CYP3A4 may result in 2-fold increases in lomitapide levels and toxicity from lomitapide.(1) PREDISPOSING FACTORS: This interaction may be more severe in patients with hepatic impairment or with end-stage renal disease.(1) PATIENT MANAGEMENT: The maximum lomitapide dose should be 30 mg daily for patients taking concomitant weak CYP3A4 inhibitors. Due to lomitapide's long half-life, it may take 1 to 2 weeks to see the full effect of this interaction. When initiating a weak CYP3A4 inhibitor in patients taking lomitapide 10 mg daily or more, decrease the dose of lomitapide by 50%. In patients taking lomitapide 5 mg daily, continue current dose. DISCUSSION: Lomitapide is very susceptible to CYP3A4 inhibition. For example, in an interaction study with a strong CYP3A4 inhibitor (ketoconazole) lomitapide exposure was increased 27-fold.(2) Based upon interactions with stronger inhibitors, weak inhibitors of CYP3A4 are predicted to increase lomitapide area-under-curve(AUC) 2-fold.(1) Weak CYP3A4 inhibitors linked to this interaction include alprazolam, amiodarone, amlodipine, asciminib, atorvastatin, azithromycin, Baikal skullcap, bicalutamide, blueberry juice, brodalumab, cannabidiol, capivasertib, cilostazol, cimetidine, ciprofloxacin, chlorzoxazone, clotrimazole, cranberry juice, cyclosporine, daridorexant, delavirdine, diosmin, everolimus, flibanserin, fosaprepitant, fostamatinib, ginkgo, givinostat, glecaprevir/pibrentasvir, goldenseal, grazoprevir, isoniazid, istradefylline, ivacaftor, larotrectinib, lacidipine, lapatinib, lazertinib, leflunomide, levamlodipine, linagliptin, lurasidone, mavorixafor, olaparib, osilodrostat, palbociclib, pazopanib, peppermint oil, piperine, propiverine, propofol, ranitidine, ranolazine, resveratrol, roxithromycin, rucaparib, selpercatinib, sitaxsentan, skullcap, teriflunomide, ticagrelor, tolvaptan, trofinetide, viloxazine, vonoprazan, and zileuton.(1-3) |
JUXTAPID |
Atorvastatin/Atazanavir SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Atazanavir may inhibit the metabolism of atorvastatin by CYP3A4.(1-3) CLINICAL EFFECTS: Concurrent use of atazanavir may result in elevated levels of atorvastatin, which could result in rhabdomyolysis or myopathy.(1-3) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: In patients receiving atazanavir, consider the use of fluvastatin. Administration of atazanavir-cobicistat with atorvastatin is not recommended.(1) Administration of atazanavir-ritonavir or unboosted atazanavir with atorvastatin should be monitored closely.(2-3) If coadministration is necessary, use the lowest dose possible of atorvastatin with careful monitoring.(1-3) Counsel patient to report unexplained muscle pain, tenderness, weakness, or dark, cola-colored urine. DISCUSSION: A study in 16 subjects found that atazanavir-cobicistat (300-150 mg once daily) increased atorvastatin (10 mg single dose) maximum concentration (Cmax) and area-under-curve (AUC) by 18.85-fold, and 9.22-fold, respectively.(1) |
ATAZANAVIR SULFATE, EVOTAZ, REYATAZ |
Eliglustat/Weak CYP3A4 Inhibitors SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Weak inhibitors of CYP3A4 may inhibit the metabolism of eliglustat. If the patient is also taking an inhibitor of CYP2D6, eliglustat metabolism can be further inhibited.(1) CLINICAL EFFECTS: Concurrent use of an agent that is a weak inhibitor of CYP3A4 may result in elevated levels of and clinical effects of eliglustat, including prolongation of the PR, QTc, and/or QRS intervals, which may result in life-threatening cardiac arrhythmias.(1) PREDISPOSING FACTORS: If the patient is also taking an inhibitor of CYP2D6, is a poor metabolizer of CYP2D6, and/or has hepatic impairment, eliglustat metabolism can be further inhibited.(1) The risk of QT prolongation or torsades de pointes may be increased in patients with cardiovascular disease (e.g. heart failure, myocardial infarction, history of torsades de pointes, congenital long QT syndrome), hypokalemia, hypomagnesemia, hypocalcemia, bradycardia, female gender, or advanced age.(2) Concurrent use of more than one drug known to cause QT prolongation or higher systemic concentrations of either QT prolonging drug are additional risk factors for torsades de pointes. Factors which may increase systemic drug concentrations include rapid infusion of an intravenous dose or impaired metabolism or elimination of the drug (e.g. coadministration with an agent which inhibits its metabolism or elimination, genetic impairment in drug metabolism or elimination, and/or renal/hepatic dysfunction).(2) PATIENT MANAGEMENT: The concurrent use of eliglustat with weak inhibitors of CYP3A4 in poor metabolizers of CYP2D6 should be avoided.(1) The dosage of eliglustat with weak inhibitors of CYP3A4 in extensive metabolizers of CYP2D6 with mild (Child-Pugh Class A) hepatic impairment should be limited to 84 mg daily.(1) If concurrent therapy is warranted, consider obtaining serum calcium, magnesium, and potassium levels and monitoring ECG at baseline and at regular intervals. Correct any electrolyte abnormalities. Instruct patients to report any irregular heartbeat, dizziness, or fainting. DISCUSSION: Ketoconazole (400 mg daily), a strong inhibitor of CYP3A4, increased eliglustat (84 mg BID) maximum concentration (Cmax) and area-under-curve (AUC) by 4-fold and 4.4-fold, respectively, in extensive metabolizers. Physiologically-based pharmacokinetic (PKPB) models suggested ketoconazole would increase eliglustat Cmax and AUC by 4.4-fold and 5.4-fold, respectively, in intermediate metabolizers. PKPB models suggested ketoconazole may increase the Cmax and AUC of eliglustat (84 mg daily) by 4.3-fold and 6.2-fold, respectively, in poor metabolizers.(1) PKPB models suggested fluconazole, a moderate inhibitor of CYP3A4, would increase eliglustat Cmax and AUC by 2.8-fold and 3.2-fold, respectively, in extensive metabolizers and by 2.5-fold and 2.9-fold, respectively in intermediate metabolizers. PKPB models suggest that concurrent eliglustat (84 mg BID), paroxetine (a strong inhibitor of CYP2D6), and ketoconazole would increase eliglustat Cmax and AUC by 16.7-fold and 24.2-fold, respectively, in extensive metabolizers. In intermediate metabolizers, eliglustat Cmax and AUC would be expected to increase 7.5-fold and 9.8-fold, respectively.(1) PKPB models suggest that concurrent eliglustat (84 mg BID), terbinafine (a moderate inhibitor of CYP2D6), and ketoconazole would increase eliglustat Cmax and AUC by 10.2-fold and 13.6-fold, respectively, in extensive metabolizers. In intermediate metabolizers, eliglustat Cmax and AUC would be expected to increase 4.2-fold and 5-fold, respectively.(1) Weak inhibitors of CYP3A4 include: alprazolam, amlodipine, asciminib, azithromycin, Baikal skullcap, berberine, bicalutamide, blueberry, brodalumab, cannabidiol, chlorzoxazone, cilostazol, cimetidine, ciprofloxacin, clotrimazole, cranberry, cyclosporine, daclatasvir, daridorexant, delavirdine, dihydroberberine, diosmin, everolimus, flibanserin, fosaprepitant, fostamatinib, ginkgo, givinostat, glecaprevir/pibrentasvir, goldenseal, grazoprevir, isoniazid, istradefylline, ivacaftor, lacidipine, lapatinib, larotrectinib, lazertinib, leflunomide, levamlodipine, linagliptin, lomitapide, lurasidone, olaparib, osilodrostat, palbociclib, pazopanib, peppermint oil, piperine, propiverine, propofol, ranolazine, resveratrol, roxithromycin, rucaparib, selpercatinib, simeprevir, sitaxsentan, skullcap, suvorexant, teriflunomide, ticagrelor, tolvaptan, trofinetide, and vonoprazan.(3,4) |
CERDELGA |
Atorvastatin (Less Than or Equal To 10 mg)/Tipranavir SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Tipranavir may inhibit the metabolism of atorvastatin by CYP3A4.(1-6) CLINICAL EFFECTS: Concurrent use of tipranavir may result in elevated levels of atorvastatin, which could result in rhabdomyolysis.(1-6) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The manufacturers of atorvastatin and tipranavir say to avoid the use of atorvastatin in patients taking tipranavir.(1-6) If atorvastatin is used with tipranavir, use the lowest dose possible of atorvastatin with careful monitoring. The UK manufacturer of atorvastatin and the Canadian and UK manufacturers of tipranavir further state that if concurrent administration is required, do not exceed an atorvastatin dose of 10 mg daily.(4-6) Consider the use of fluvastatin in patients maintained on tipranavir. DISCUSSION: In a study in 22 subjects, pretreatment with tipranavir/ritonavir (500/200 mg twice daily) increased the Cmax, AUC, and Cmin of a single dose of atorvastatin (10 mg) by 8.61-fold, 9.36-fold, and 5.19-fold, respectively. The Cmax, AUC, and Cmin of orthohydroxy-atorvastatin decreased by 98%, 89%, and 93%, respectively. The AUC and Cmin of parahydroxy-atorvastatin decreased by 82% and 66%, respectively. There were no significant effects on tipranavir levels.(3) |
APTIVUS |
Selected Sensitive CYP3A4 Substrates/Oral Lefamulin SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Lefamulin is considered a moderate inhibitor of CYP3A4. FDA defines a moderate inhibitor as a drug which increases the area-under-curve (AUC) of a sensitive substrate by 2- to 5-fold.(1,4) CLINICAL EFFECTS: Concurrent use of oral lefamulin may lead to increased serum levels and adverse effects of drugs sensitive to inhibition of the CYP3A4 pathway.(1) PREDISPOSING FACTORS: With darifenacin, the risk of anticholinergic toxicities including cognitive decline, delirium, falls and fractures is increased in geriatric patients using more than one medicine with anticholinergic properties.(5) PATIENT MANAGEMENT: If oral lefamulin must be coadministered with a sensitive CYP3A4 substrate, it is recommended to closely monitor for adverse effects of the CYP3A4 substrate.(1) Drug-specific recommendations: The manufacturer of abemaciclib recommends monitoring for adverse reactions and considering a dose reduction of abemaciclib in 50 mg decrements as detailed in prescribing information (based on starting dose, previous dose reductions, and combination or monotherapy use) with concurrent use of moderate CYP3A4 inhibitors.(2) The US manufacturer of sirolimus protein-bound injection (Fyarro) states a dose reduction to 56 mg/m2 is recommended when used concurrently with moderate or weak CYP3A4 inhibitors. Concurrent use with strong CYP3A4 inhibitors should be avoided.(3) DISCUSSION: In a study, oral lefamulin tablets administered concomitantly with and at 2 or 4 hours before oral midazolam (a CYP3A4 substrate) increased the area-under-curve (AUC) and maximum concentration (Cmax) of midazolam by 200% and 100%, respectively. No clinically significant effect on midazolam pharmacokinetics was observed when co-administered with lefamulin injection.(1) Sensitive CYP3A4 substrates linked to this monograph include: abemaciclib, acalabrutinib, alfentanil, alprazolam, atorvastatin, brotizolam, budesonide, buspirone, cobimetinib, darifenacin, ebastine, eletriptan, elvitegravir, everolimus, lovastatin, lurasidone, maraviroc, midazolam, nisoldipine, paritaprevir, sildenafil, simvastatin, sirolimus, ticagrelor, triazolam, and ulipristal.(1,4,6) |
XENLETA |
Atorvastatin/Ketoconazole; Posaconazole SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Ketoconazole(1) and posaconazole(2,3) may inhibit the metabolism of atorvastatin(4) by CYP3A4. CLINICAL EFFECTS: Concurrent administration of ketoconazole or posaconazole may result in increased levels of atorvastatin, which may result in an increased risk of rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The manufacturer of posaconazole(2,3) states that atorvastatin is contraindicated. However, the manufacturer of atorvastatin states that patients receiving ketoconazole or posaconazole should use the lowest dose necessary of atorvastatin,(4) and the manufacturer of ketoconazole states that coadministration with atorvastatin should be done with caution.(1) DISCUSSION: In a study, itraconazole (200 mg daily for 4 days) increased the area-under-curve (AUC) and maximum concentration (Cmax) of atorvastatin (40 mg single dose) by 3.3-fold and 20%, respectively.(4) In a randomized, double-blind, cross-over study, administration of atorvastatin (40 mg single dose) on day 4 of itraconazole (200 mg daily X 5 days) increased atorvastatin AUC and half-life (T1/2) 3-fold. There were no significant change in atorvastatin Cmax. Atorvastatin lactone AUC, Cmax, and T1/2 increased 4-fold, 2-fold, and 2-fold respectively. The AUC of active and total HMG-CoA reductase inhibitors increased 1.6-fold and 1.7-fold, respectively.(5) In healthy subjects, itraconazole increased atorvastatin T1/2, AUC, and Cmax by 60%, 2.4-fold, and 47%, respectively. Itraconazole had no effect on pravastatin pharmacokinetics.(6) In a study in 18 healthy subjects, itraconazole (400 mg) increased the Cmax, AUC, and half-life of a single dose of atorvastatin (20 mg) by 38%, 150%, 30%, respectively.(7) |
KETOCONAZOLE, NOXAFIL, POSACONAZOLE |
Atorvastatin; Rosuvastatin/Nirmatrelvir-Ritonavir SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Nirmatrelvir-ritonavir may inhibit the metabolism of atorvastatin and rosuvastatin by CYP3A4.(1-3) CLINICAL EFFECTS: Concurrent use of nirmatrelvir-ritonavir may result in elevated levels of atorvastatin and rosuvastatin, which could result in rhabdomyolysis.(1-3) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: In patients receiving nirmatrelvir-ritonavir, consider temporary discontinuation of atorvastatin and rosuvastatin during therapy with nirmatrelvir-ritonavir. Atorvastatin and rosuvastatin do not need to be withheld prior to or after completing therapy with nirmatrelvir-ritonavir.(1) DISCUSSION: Nirmatrelvir-ritonavir is a CYP3A4 inhibitor.(1) |
PAXLOVID |
Selected Sensitive CYP3A4 Substrates/Adagrasib SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Adagrasib is a strong inhibitor of CYP3A4 and may decrease the metabolism of drugs metabolized by the CYP3A4 enzyme.(1) CLINICAL EFFECTS: Concurrent use of adagrasib may lead to increased serum levels and adverse effects of drugs sensitive to inhibition of the CYP3A4 pathway.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer of adagrasib states that coadministration of CYP3A4 substrates should be avoided.(1) DISCUSSION: In a study, adagrasib (400 mg twice daily) increased the area-under-the-curve (AUC) and maximum concentration (Cmax) of a single dose of midazolam by 21-fold and 4.8-fold, respectively. In a study, adagrasib (600 mg twice daily) increased the AUC and Cmax of a single dose of midazolam by 31-fold and 3.1-fold, respectively.(1) CYP3A4 substrates with a narrow therapeutic index linked to this monograph include: atazanavir, atorvastatin, brotizolam, darunavir, ebastine, eletriptan, indinavir, nisoldipine, paritaprevir, and tipranavir.(1-3) |
KRAZATI |
HMG-CoA Reductase Inhibitors/Belumosudil SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: HMG-CoA reductase inhibitors are substrates of the BCRP and OATP1B1 transporters.(1-7) Belumosudil may increase the absorption and decrease the hepatic uptake and metabolism of HMG-CoA reductase inhibitors by inhibiting OATP1B1 and BCRP transporters.(7,8) CLINICAL EFFECTS: Simultaneous use of belumosudil may result in increased levels and side effects from HMG-CoA reductase inhibitors, including rhabdomyolysis.(8) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: The US manufacturer of belumosudil states that concurrent use of BCRP and OATP1B1 substrates for which minimal concentration changes may lead to serious toxicities should be avoided.(8) The Australian manufacturer of belumosudil states that concurrent use with drugs that are transported by OATP1B1 and BCRP (such as rosuvastatin) can lead to an increase in exposure of these concomitant drugs which may increase the risk of these substrate-related toxicities. Consider switching to a drug less sensitive to OATP1B1 and BCRP inhibition when possible. If used together the dose of rosuvastatin should not exceed 5 mg once daily. Monitor patients closely for signs and symptoms of excessive exposure to the drugs that are substrates of OATP1B1 and BCRP.(9) DISCUSSION: Coadministration of belumosudil increased rosuvastatin (OATP1B1 and BCRP substrate) maximum concentration (Cmax) and area-under-curve (AUC) by 3.6- and 4.6-fold, respectively.(8) |
REZUROCK |
Atorvastatin/Asciminib SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Asciminib is an inhibitor of the BCRP, OATP1B1, and OATP1B3 transporters and may increase the absorption and/or decrease the elimination of atorvastatin.(1-3) CLINICAL EFFECTS: Concurrent use of asciminib may result in elevated levels of atorvastatin, which could result in rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The manufacturer of asciminib states that concurrent use with atorvastatin should be avoided.(1,2) If concurrent therapy is deemed medically necessary, monitor patients for signs and symptoms of myopathy/rhabdomyolysis, including muscle pain/tenderness/weakness, fever, unusual tiredness, changes in the amount of urine, and/or discolored urine. DISCUSSION: In a PKPB model, concurrent use of asciminib 40 mg twice daily, 80 mg daily, and 200 mg twice daily increased the concentration maximum (Cmax) by 97%, 143% and 300%, respectively, and area-under-curve (AUC) by 81%, 122%, and 326%, respectively, of a single dose of atorvastatin (an OATP1B1 and OATP1B3 substrate).(4) In a PKPB model, concurrent use of asciminib 40 mg twice daily, 80 mg daily, and 200 mg twice daily increased the Cmax by 453%, 530% and 732%, respectively, and AUC by 190%, 202%, and 311%, respectively, of a single dose of rosuvastatin (an OATP1B1 and BCRP substrate).(4) |
SCEMBLIX |
Atorvastatin/Selected BCRP Inhibitors SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: BCRP inhibitors may result in increased absorption of atorvastatin.(1,2) CLINICAL EFFECTS: Administration of atorvastatin with BCRP inhibitors may result in elevated levels of atorvastatin, which could result in rhabdomyolysis.(1,2) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Atorvastatin is a substrate of the efflux transporter BCRP.(1) The US manufacturer of darolutamide recommends avoiding concurrent use with BCRP substrates such as atorvastatin.(2) If concurrent therapy is deemed medically necessary, monitor patients for signs and symptoms of myopathy/rhabdomyolysis, including muscle pain/tenderness/weakness, fever, unusual tiredness, changes in the amount of urine, and/or discolored urine.(2) DISCUSSION: Concurrent administration of darolutamide with rosuvastatin increased the mean area-under-the-curve (AUC) and maximum concentration (Cmax) of rosuvastatin approximately 5-fold.(2) The study authors found that darolutamide has no effect on total or renal clearance of rosuvastatin and thus no likely effect on OATP or OAT3, which suggests the increase in rosuvastatin plasma concentrations is due to BCRP inhibition.(3) BCRP inhibitors linked to this monograph include: darolutamide.(4,5) |
NUBEQA |
There are 44 moderate interactions.
The clinician should assess the patient’s characteristics and take action as needed. Actions required for moderate interactions include, but are not limited to, discontinuing one or both agents, adjusting dosage, altering administration.
Drug Interaction | Drug Names |
---|---|
Cyclosporine/Calcium Channel Blockers SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Calcium channel blockers may inhibit the metabolism of cyclosporine by CYP3A4. CLINICAL EFFECTS: Concurrent use of calcium channel blockers may result in elevated levels of and toxicity from cyclosporine. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Monitor cyclosporine levels when initiating or discontinuing calcium channel blockers. DISCUSSION: Concurrent administration of cyclosporine and amlodipine, diltiazem, nicardipine, or verapamil has caused elevated cyclosporine levels. Renal toxicity was seen in some cases. Upon discontinuation of the calcium channel blocker, cyclosporine concentrations have returned to baseline levels. With concurrent diltiazem administration, cyclosporine dosage decreases of 15% to 48% were required. A prospective study in 11 renal transplant patients showed a 40% increase in trough cyclosporine levels when given concomitantly with amlodipine.(29) |
CYCLOSPORINE, CYCLOSPORINE MODIFIED, GENGRAF, NEORAL, SANDIMMUNE |
Atorvastatin/Diltiazem SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Diltiazem may inhibit the metabolism of atorvastatin by CYP3A4.(1) CLINICAL EFFECTS: Concurrent diltiazem may result in elevated levels of atorvastatin,(1) which may result in rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Patients receiving concurrent therapy with diltiazem should be monitored closely for adverse effects of the HMG-CoA reductase inhibitor, including rhabdomyolysis. The dosage of the HMG-CoA reductase inhibitor may need to be reduced or discontinued. Fluvastatin or pravastatin, HMG-CoA reductase inhibitors that are not metabolized by CYP3A4, may be alternatives to atorvastatin, lovastatin, and simvastatin in patients receiving diltiazem. DISCUSSION: There is a case report of rhabdomyolysis following the addition of diltiazem to a patient maintained on atorvastatin.(1) In a PKPB model, concurrent use of atorvastatin (20 mg daily) with diltiazem (180 mg twice daily for 3 weeks) increased the simulated Cmax ratio and AUC ratio of atorvastatin by 1.32 and 1.77, respectively, and increased the simulated Cmax ratio and AUC ratio of atorvastatin lactone by 2.66 and 3.24, respectively.(2) |
CARDIZEM, CARDIZEM CD, CARDIZEM LA, CARTIA XT, DILT-XR, DILTIAZEM 12HR ER, DILTIAZEM 24HR ER, DILTIAZEM 24HR ER (CD), DILTIAZEM 24HR ER (LA), DILTIAZEM 24HR ER (XR), DILTIAZEM HCL, DILTIAZEM HCL-0.7% NACL, DILTIAZEM HCL-0.9% NACL, DILTIAZEM-D5W, MATZIM LA, TIADYLT ER, TIAZAC |
Atorvastatin; Lovastatin (Less than or Equal To 40 mg); Simvastatin (Less Than or Equal To 20 mg)/Amiodarone SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Amiodarone may inhibit the metabolism of atorvastatin,(1) lovastatin(2) and simvastatin(3-6) by CYP3A4. CLINICAL EFFECTS: Concurrent use of amiodarone(2) with certain HMG CoA reductase inhibitors may increase the risk of rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Use the lowest dose of atorvastatin necessary in patients receiving concurrent amiodarone therapy.(1) The US manufacturers of amiodarone(1) and lovastatin(2) recommend that the dose of lovastatin not exceed 40 mg daily in patients receiving concurrent amiodarone unless the potential benefit outweighs the increased risk of myopathy. The US manufacturers of amiodarone(1) and simvastatin(3-6) recommend that the dose of simvastatin not exceed 20 mg daily in patients receiving concurrent amiodarone unless the potential benefit outweighs the increased risk of myopathy. DISCUSSION: Rhabdomyolysis has been reported with concurrent amiodarone and atorvastatin and simvastatin.(1) In a case report, a 63 year-old male developed rhabdomyolysis 4 weeks after starting simvastatin therapy and 2 weeks after starting amiodarone.(7) In a clinical trial, myopathy was been reported in 6% of patients receiving concurrent simvastatin (80 mg) and amiodarone.(3) In a randomized, cross-over study in 12 healthy subjects, subjects received amiodarone (400 mg daily) with either simvastatin (40 mg) or pravastatin (40 mg). Amiodarone increased simvastatin area-under-curve (AUC) by 73%, maximum concentration (Cmax) by 100%, and half-life by 48%. There were no significant effects on pravastatin pharmacokinetics.(8) In a case report, a 72 year-old male developed rhabdomyolysis 10 weeks after starting amiodarone (200 mg daily) therapy and 6 weeks after starting simvastatin (80 mg daily).(9) In a retrospective review of patients receiving amiodarone, the rate of adverse events in combination with a statin was 1.0%, 0.7%, and 0.4% for simvastatin, atorvastatin, and pravastatin, respectively. The most commonly reported adverse effect was muscle soreness, which was present in 77% of reports and was found more often in older male patients.(10) |
AMIODARONE HCL, AMIODARONE HCL-D5W, NEXTERONE, PACERONE |
Slt Calcium Channel Blockers/Atazanavir;Darunavir;Fosamprenavir SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Atazanavir, darunavir, and fosamprenavir may inhibit the CYP3A4-mediated metabolism of calcium channel blockers.(1-5) CLINICAL EFFECTS: Concurrent use of atazanavir, darunavir, or fosamprenavir may result in increased levels of calcium channel blockers. The combination of atazanavir with non-dihydropyridines may result in an additive effect on the PR interval.(1-2,6-7) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US Department of Health and Human Services HIV guidelines recommend that concurrent use of calcium channel blockers with protease inhibitors be monitored closely. The dose of the calcium channel blocker should be titrated to clinical response and adverse events.(5) Additional recommendations apply to patients on atazanavir. EKG monitoring is recommended for patients on concurrent therapy with calcium channel blockers. A dose reduction of diltiazem by 50% should be considered for patients starting atazanavir.(1,2,5) DISCUSSION: In a study in 28 subjects, concurrent atazanavir (400 mg daily) with diltiazem (180 mg daily) increased the diltiazem area-under-curve (AUC) and maximum concentration (Cmax) by 225% and 98%, respectively.(1,2) Diltiazem minimum concentration (Cmin) increased by 242%. The Cmax, AUC, and Cmin of desacetyl-diltiazem increased by 272%, 265%, and 221%, respectively. There were no significant effects on atazanavir levels.(1) |
ATAZANAVIR SULFATE, DARUNAVIR, EVOTAZ, FOSAMPRENAVIR CALCIUM, PREZCOBIX, PREZISTA, REYATAZ, SYMTUZA |
Selected HMG-CoA Reductase Inhibitors/Digoxin SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: The exact mechanism is unknown, but may involve competitive inhibition of P-glycoproteins.(1) CLINICAL EFFECTS: Concurrent use of digoxin and a HMG-CoA reductase inhibitor may result in rhabdomyolysis.(1) Concurrent use of atorvastatin(2) or simvastatin(3) may result in increased levels of digoxin. Symptoms of digoxin toxicity can include anorexia, nausea, vomiting, headache, fatigue, malaise, drowsiness, generalized muscle weakness, disorientation, hallucinations, visual disturbances, and arrhythmias. PREDISPOSING FACTORS: Low body weight, advanced age, impaired renal function, hypokalemia, hypercalcemia, and/or hypomagnesemia may increase the risk of digoxin toxicity. The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on fluvastatin who are CYP2C9 intermediate or poor metabolizers may have increased fluvastatin concentrations and risk of myopathy. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: Patients receiving concurrent therapy with digoxin and a HMG-CoA reductase inhibitor should be closely monitored for rhabdomyolysis and instructed to report any symptoms of myopathy.(1) Patients receiving concurrent atorvastatin(2) or simvastatin(3) should be monitored for elevated digoxin levels and instructed to report any symptoms of digoxin toxicity. The dosage of digoxin may need to be decreased by 15-30% or the frequency of administration may be reduced.(4) DISCUSSION: A retrospective review examined all reports of HMG-CoA reductase inhibitor-induced rhabdomyolysis submitted to the Food and Drug Administration (FDA) between November, 1997 and March, 2000. There were 601 unique cases of rhabdomyolysis, with 26 cases involving concurrent use of digoxin. There were 5 reports involving concurrent atorvastatin/digoxin, 7 reports with cerivastatin/digoxin, 1 report with fluvastatin/digoxin, 2 with lovastatin/digoxin, 2 with pravastatin/digoxin, and 9 with simvastatin/digoxin.(5) Concurrent use of atorvastatin (80 mg daily for 14 days) with digoxin (0.25mg daily for 20 days) increased digoxin maximum concentration (Cmax) and area-under-curve (AUC) by 20% and 15%, respectively.(2) In a study in 18 subjects, concurrent fluvastatin had no effect on digoxin AUC but digoxin Cmax increased 11%.(6) Concurrent use of lovastatin had no effect on digoxin levels.(7) In a study in 18 subjects, concurrent pravastatin had no effect on digoxin levels.(8) Concurrent use of rosuvastatin had no effect on digoxin levels.(9) Concurrent simvastatin slightly increased the concentration of a single dose of digoxin by less than 0.3 ng/ml.(3) |
DIGITEK, DIGOXIN, DIGOXIN MICRONIZED, LANOXIN, LANOXIN PEDIATRIC |
Colchicine/HMG-CoA Reductase Inhibitors SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Colchicine and HMG-CoA Reductase Inhibitors(statins) each have a risk for myopathy and rhabdomyolysis; these risks may be additive.(1-3) CLINICAL EFFECTS: Concurrent use of the statin drugs and colchicine may increase the risk of myopathy or rhabdomyolysis, which is characterized by progressive muscle weakness and pain in the presence of a normal neurological exam.(1-8) PREDISPOSING FACTORS: Long term use of colchicine, generally from weeks to months in duration of use, may predispose patients to myopathy or rhabdomyolysis.(1) The risk for myopathy or rhabdomyolysis may also be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on fluvastatin who are CYP2C9 intermediate or poor metabolizers may have increased fluvastatin concentrations and risk of myopathy. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: Patients receiving concurrent therapy with colchicine and HMG-CoA reductase inhibitors should be carefully monitored for myopathy or rhabdomyolysis. Patients should be instructed to report any symptoms of myopathy such as unexplained muscle aches, tenderness, weakness, or the onset of tingling/numbness in the fingers or toes.(1-6) DISCUSSION: The development of myopathy and clinical rhabdomyolysis have been reported in several case reports with concurrent use of colchicine and atorvastatin,(4) fluvastatin,(5) pravastatin,(6) simvastatin(7,8), and rosuvastatin.(2) The incidence and frequency appear to increase in patients with mild to moderate renal insufficiency and length of colchicine therapy. |
COLCHICINE, COLCRYS, GLOPERBA, LODOCO, MITIGARE, PROBENECID-COLCHICINE |
Tacrolimus/Selected Calcium Channel Blockers SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Some calcium channel blockers may inhibit the metabolism of tacrolimus by CYP3A4.(1-13) CLINICAL EFFECTS: Concurrent use of calcium channel blockers may result in elevated levels of and side effects from tacrolimus, including nephrotoxicity, neurotoxicity, and prolongation of the QTc interval and life-threatening cardiac arrhythmias, including torsades de pointes.(1-13) PREDISPOSING FACTORS: The risk of QT prolongation or torsade de pointes may be increased in patients with cardiovascular disease (e.g. heart failure, myocardial infarction, history of torsade de pointes, congenital long QT syndrome), hypokalemia, hypomagnesemia, hypocalcemia, bradycardia, female gender, or advanced age. Concurrent use of more than one drug known to cause QT prolongation or higher systemic concentrations of either QT prolonging drug are additional risk factors for torsade de pointes. Factors which may increase systemic drug concentrations include rapid infusion of an intravenous dose or impaired metabolism or elimination of the drug (e.g. coadministration with an agent which inhibits its metabolism or elimination, and/or renal/hepatic dysfunction). PATIENT MANAGEMENT: Patients maintained on tacrolimus should be closely monitored if calcium channel blockers such as amlodipine, diltiazem, felodipine, nifedipine, or verapamil are initiated or discontinued. The dosage of tacrolimus may need to be adjusted or the calcium channel blocker may need to be discontinued. When concurrent therapy of selected calcium channel blockers and tacrolimus is warranted, consider obtaining serum calcium, magnesium, and potassium levels and monitoring ECG at baseline and at regular intervals. Correct any electrolyte abnormalities. Instruct patients to report any irregular heartbeat, dizziness, or fainting. DISCUSSION: A study of 9 healthy volunteers who are CYP3A5 expressers found that concomitant tacrolimus and amlodipine resulted in increased tacrolimus AUC by 2.44-fold and 4.1-fold in a single-dose and a 7-day multi-dose study, respectively, compared to tacrolimus alone. No interaction was observed in CYP3A5 non-expressers.(2) However, a case report of a 4-year-old renal transplant patient who is a CYP3A5 non-expresser on tacrolimus and started on amlodipine described increased tacrolimus trough level and AUC from 3.7 to 12.2 ng/mL and 211 to 638 h/ng/mL, respectively.(3) A non-randomized study in 2 liver and 2 renal transplant recipients examined the effects of diltiazem on tacrolimus. In the 2 kidney recipients, concurrent diltiazem at a dosage of 20 mg daily increased tacrolimus AUC by 26% and by 67%. Diltiazem at a dosage of 180 mg increased tacrolimus AUC by 48% and by 177%. In the 2 liver recipients, no tacrolimus increases were seen until diltiazem dosage reached 60 mg daily. One subject received 120 mg of diltiazem daily and tacrolimus AUC was increased by 18%. The other subject received 180 mg diltiazem daily and tacrolimus AUC increased 22%.(4) There is one case report of elevated tacrolimus levels and toxicity in a liver transplant patient 3 days after the addition of diltiazem to his regimen.(5) There is one case report of elevated tacrolimus levels in a renal transplant patient.(6) In contrast, a retrospective review of renal transplant patients found no difference in tacrolimus-related side effects or tacrolimus exposure in patients treated with diltiazem versus those not treated with diltiazem.(7) There is one report of increased tacrolimus levels with concurrent felodipine in a renal transplant patient.(8) A retrospective review examined the effects of nifedipine on tacrolimus dosing requirements in renal transplant patients. In patients who received concurrent nifedipine (n=22), tacrolimus daily dosing requirements were 26%, 29%, and 38% lower at 3, 6, and 12 months post-transplant when compared to patients not taking nifedipine (n=28).(9) In a study of liver transplant patients, nifedipine improved kidney function as indicated by lowering of serum creatinine levels at 6 and 12 months.(10) In vitro studies in human tissue found that tacrolimus metabolism was inhibited by nifedipine and verapamil.(12,13) |
ASTAGRAF XL, ENVARSUS XR, PROGRAF, TACROLIMUS, TACROLIMUS XL |
Atorvastatin; Pitavastatin (Less Than or Equal To 1 mg); Pravastatin/Erythromycin SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Erythromycin may inhibit the metabolism of atorvastatin, pitavastatin, and pravastatin by organic anion transporting polypeptide (OATP). When used concomitantly, erythromycin inhibits hepatic uptake of atorvastatin, pitavastatin, and pravastatin in a concentration dependent manner.(1,2) CLINICAL EFFECTS: Concurrent erythromycin may result in increased levels of atorvastatin, pitavastatin, or pravastatin, which may produce rhabdomyolysis. Symptoms of rhabdomyolysis include muscle pain, tenderness, weakness, elevated creatine kinase levels, and reddish-brown, heme positive urine. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The US manufacturer of pitavastatin states that a daily dose of 1 mg of pitavastatin should not be exceeded during erythromycin therapy.(1) If possible, consider suspending statin therapy during macrolide therapy. Monitor patients receiving concurrent therapy for signs of rhabdomyolysis. DISCUSSION: In a study in healthy subjects, azithromycin (500 mg daily for 3 days) had no effect on the AUC or Cmax of atorvastatin (10 mg daily).(4) In a study in 12 healthy subjects, pretreatment with seven days of erythromycin resulted in increases in the Cmax and AUC of a single dose of atorvastatin (10 mg) by 37.7% and 32.5%, respectively.(2,3) In a study, pretreatment with erythromycin (500 mg 4 times daily for 6 days) increased the AUC and Cmax of a single dose of pitavastatin (4 mg on Day 4) by 2.8-fold and 3.6-fold, respectively.(1) |
E.E.S. 200, E.E.S. 400, ERY-TAB, ERYPED 200, ERYPED 400, ERYTHROCIN LACTOBIONATE, ERYTHROCIN STEARATE, ERYTHROMYCIN, ERYTHROMYCIN ESTOLATE, ERYTHROMYCIN ETHYLSUCCINATE, ERYTHROMYCIN LACTOBIONATE |
Atorvastatin; Lovastatin (Less Than or Equal To 20 mg); Simvastatin (Less Than or Equal To 10 mg)/Verapamil SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Verapamil may inhibit the metabolism of lovastatin and simvastatin by CYP3A4.(1-6) Atorvastatin may inhibit the metabolism of verapamil by CYP3A4.(7) CLINICAL EFFECTS: Concurrent verapamil may result in elevated levels of lovastatin or simvastatin, which may result in rhabdomyolysis.(1-6) Concurrent atorvastatin may result in elevated levels of and clinical effects from verapamil.(7) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The manufacturer of lovastatin states that the dose of lovastatin should be started at a dose of 10 mg daily and that the dose of lovastatin should not exceed 20 mg daily in patients receiving concurrent therapy with verapamil.(2) The manufacturer of simvastatin recommends that the dose of simvastatin not exceed 10 mg daily in patients receiving concurrent therapy with verapamil unless the potential benefit outweighs the increased risk of myopathy.(3-6) Patients receiving concurrent atorvastatin should be monitored for increased effects of verapamil. Patients receiving concurrent therapy with verapamil with lovastatin or simvastatin should be monitored closely for adverse effects of the HMG-CoA reductase inhibitor, including rhabdomyolysis. The dosage of the HMG-CoA reductase inhibitor may need to be reduced or discontinued. Fluvastatin or pravastatin, HMG-CoA reductase inhibitors that are not metabolized by CYP3A4, may be alternatives to atorvastatin, lovastatin, and simvastatin in patients receiving verapamil. DISCUSSION: A study in 12 subjects examined the effects of pretreatment with verapamil (240 mg daily) for two days on a single dose of simvastatin (40 mg). Pretreatment with verapamil resulted in 2.6-fold and 4.6-fold increases in the Cmax and AUC of simvastatin, respectively. Pretreatment with verapamil also increased the Cmax and AUC of simvastatin acid 3.4-fold and 2.8-fold, respectively. There were no effects on the half-life or time to maximum concentration (Cmax) of simvastatin.(1) Administration of multiple doses of low-dose verapamil (10 mg) and simvastatin (80 mg) increased simvastatin exposure by 2.5-fold.(8) In an analysis of clinical trials involving 25,248 patients treated with simvastatin 20 to 80 mg, the incidence of myopathy was higher in patients receiving verapamil and simvastatin (4/635) than in patients taking simvastatin without a calcium channel blocker (13/21,224).(3,4) In a study in 12 healthy subjects, concurrent atorvastatin (40 mg) increased the AUC of verapamil (60 mg) by 42.8%.(7) |
TRANDOLAPRIL-VERAPAMIL ER, VERAPAMIL ER, VERAPAMIL ER PM, VERAPAMIL HCL, VERAPAMIL SR, VERELAN PM |
Simvastatin (Less than or Equal To 20 mg)/Amlodipine SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Amlodipine may inhibit the metabolism of simvastatin by CYP3A4.(1-7) Levamlodipine is the active isomer of amlodipine.(8) CLINICAL EFFECTS: Concurrent amlodipine may result in elevated levels of simvastatin,(1-7) which may result in myopathy and rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Do not exceed a dosage of 20 mg daily of simvastatin in patients receiving concurrent therapy with amlodipine.(1-4) Consider separating the administration times of amlodipine and simvastatin in patients receiving concurrent therapy with amlodipine and simvastatin doses of 20 mg or less.(5) DISCUSSION: In a study in 8 patients with hypercholesterolemia and hypertension, 4 weeks of concurrent administration of amlodipine (5 mg daily) increased the maximum concentration (Cmax) and area-under-curve (AUC) of simvastatin (5 mg daily) by 43% and 28%, respectively. There were no changes in the lipid-lowering affects of simvastatin.(6) In a study in 17 subjects, administration of amlodipine (5 mg daily) 4 hours after simvastatin (5 mg daily) resulted in Cmax and AUC values of simvastatin that were 63.2% and 66.0%, respectively, of values obtained with simultaneous dosing.(5) Acute renal failure and rhabdomyolysis was reported in patient maintained on amlodipine and alprazolam two days after beginning the maximal dose of simvastatin.(7) |
EZETIMIBE-SIMVASTATIN, SIMVASTATIN, VYTORIN, ZOCOR |
Atorvastatin; Lovastatin (Less than or Equal To 20 mg); Simvastatin (Less than or Equal To 10 mg)/Dronedarone SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Dronedarone may inhibit the metabolism of HMG CoA reductase inhibitors by CYP3A4 and P-glycoprotein.(1) CLINICAL EFFECTS: Concurrent use of dronedarone with certain HMG CoA reductase inhibitors may increase the risk of rhabdomyolysis.(1) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: When initiating lovastatin in a patient maintained on dronedarone, the starting dose of lovastatin should not exceed 10 mg. The dose of lovastatin not exceed 20 mg daily in patients receiving concurrent dronedarone unless the potential benefit outweighs the increased risk of myopathy.(2) Do not exceed 10 mg of simvastatin daily during concurrent therapy with dronedarone.(1,3) For other statins, the US manufacturer of dronedarone recommends following recommendations from the statin manufacturer regarding concurrent use of 3A4 inhibitors and states no dosage adjustment is needed with dosages of atorvastatin 40 mg daily or less.(1) Monitor patients receiving concurrent therapy for signs and symptoms of rhabdomyolysis. DISCUSSION: Concurrent dronedarone (400 mg BID for 14 days) and simvastatin (40 mg daily for 14 days) increased simvastatin maximum concentration (Cmax) and area-under-curve (AUC) and simvastatin acid by 3.75-fold and 3.9-fold, respectively. The Cmax and AUC of simvastatin acid increased by 2.14-fold and 1.96-fold, respectively.(1,3) |
MULTAQ |
Atorvastatin (<= 20 mg)/Selected Protease Inhibitors SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Protease inhibitors may inhibit the metabolism of atorvastatin by CYP3A4.(1-5) CLINICAL EFFECTS: Concurrent use of protease inhibitors may result in elevated levels of atorvastatin, which could result in rhabdomyolysis.(1-5) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: In patients receiving protease inhibitors, consider the use of fluvastatin. If atorvastatin is used with concurrent darunavir, fosamprenavir, lopinavir, or saquinavir, limit the dose of atorvastatin to 20 mg daily with careful monitoring.(1-5) Monitor for signs and symptoms of myopathy (e.g. muscle weakness, muscle pain, rising creatine kinase). DISCUSSION: A study in 15 subjects found that darunavir/ritonavir (300/100 mg twice daily) decreased the maximum concentration (Cmax) and area-under curve (AUC) of atorvastatin (10 mg daily) by 64% and 15%, when compared to atorvastatin (40 mg daily) administered alone. Atorvastatin minimum concentration (Cmin) increased by 81% during concurrent therapy.(2) In a study in 16 subjects, concurrent atorvastatin (10 mg daily for 4 days) and fosamprenavir (1400 mg twice daily for 2 weeks) increased atorvastatin Cmax and AUC by 304% and 130%, respectively. Atorvastatin Cmin decreased by 10%.(3) The Cmax, AUC, and Cmin of amprenavir decreased by by 18%, 27%, and 12%, respectively.(3) In a study in 16 subjects, the administration of atorvastatin (10 mg daily for 4 days) and fosamprenavir (700 mg twice daily for 2 weeks) with ritonavir (100 mg twice daily for 2 weeks) increased the atorvastatin Cmax, AUC, and Cmin by 184%, 153%, and 73%, respectively.(1,4) There were no changes in amprenavir Cmax, AUC, or Cmin.(3) A randomized, controlled trial in healthy subjects examined the effects of a combination of ritonavir and saquinavir on the pharmacokinetics of atorvastatin, pravastatin, and simvastatin and the effects of pravastatin on nelfinavir pharmacokinetics. The combination of ritonavir and saquinavir decreased pravastatin levels by 50% and increased atorvastatin and simvastatin levels by 79% and 3059%, respectively. Pravastatin had no statistically significant effect on nelfinavir pharmacokinetics.(6) Concurrent administration of atorvastatin (40 mg) with ritonavir-saquinavir (400 mg twice daily) increased atorvastatin AUC and Cmax by 3.9-fold and 4.3-fold, respectively.(1) Concurrent administration of atorvastatin (20 mg) with lopinavir-ritonavir (400-100 mg twice daily) increased atorvastatin by 5.9-fold.(1) |
DARUNAVIR, FOSAMPRENAVIR CALCIUM, KALETRA, LOPINAVIR-RITONAVIR, PREZCOBIX, PREZISTA, SYMTUZA |
Atorvastatin (Less Than or Equal To 40 mg)/Nelfinavir; Simeprevir SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Nelfinavir may inhibit the metabolism of atorvastatin by CYP3A4.(1-3) Simeprevir may increase the absorption of atorvastatin by inhibiting OATP1B1 and CYP3A4.(4) CLINICAL EFFECTS: Concurrent use of nelfinavir(1-3) or simeprevir(4) may result in elevated levels of atorvastatin, which could result in rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: In patients receiving protease inhibitors, consider the use of fluvastatin. If atorvastatin is used with concurrent nelfinavir(1-3) or simeprevir,(4) limit the dose of atorvastatin to 40 mg daily with careful monitoring. DISCUSSION: In a study, nelfinavir (1250 mg twice a day for 14 days) increased the AUC and Cmax of atorvastatin (10 mg daily for 28 days) 74% and 2.2-fold, respectively.(1) An open-label study in healthy subjects examined the effects of nelfinavir on atorvastatin and simvastatin pharmacokinetics. Nelfinavir increased the atorvastatin AUC, Cmax, and Cmin by 74%, 122%, and 39%, respectively. Nelfinavir increased simvastatin AUC and Cmax by 505% and 517%, respectively. There was no effect on nelfinavir pharmacokinetics when compared to historical controls.(2,3) In a study in 18 subjects, simeprevir (150 mg daily for 10 days) increased the Cmax and AUC of a single dose of atorvastatin (40 mg) by 1.70-fold and 2.12-fold, respectively. The Cmax and AUC of 2-hydroxy-atorvastatin increased by 1.98-fold and 2.29-fold, respectively.(4) |
VIRACEPT |
Itraconazole/Atorvastatin (<=20mg) SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Itraconazole may inhibit the metabolism of atorvastatin by CYP3A4. CLINICAL EFFECTS: Concurrent administration may result in increased levels of atorvastatin, which may result in an increased risk of rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The manufacturer of atorvastatin states the dose of atorvastatin should be limited to 20 mg in patients receiving itraconazole.(1) The manufacturer of itraconazole(2) states that concurrent use of atorvastatin should be carefully monitored. Monitor patients receiving concurrent therapy for signs and symptoms of rhabdomyolysis if concurrent therapy is warranted. DISCUSSION: In a randomized, double-blind, cross-over study, administration of atorvastatin (40 mg single dose) on day 4 of itraconazole (200 mg daily for 5 days) increased atorvastatin area-under-curve (AUC) and half-life (T1/2) 3-fold. There were no significant change in atorvastatin maximum concentration (Cmax). Atorvastatin lactone AUC, Cmax, and T1/2 increased 4-fold, 2-fold, and 2-fold respectively. The AUC of active and total HMG-CoA reductase inhibitors increased 1.6-fold and 1.7-fold, respectively.(1,3) In healthy subjects, itraconazole increased atorvastatin T1/2, AUC, and Cmax by 60%, 2.4-fold, and 47%, respectively. Itraconazole had no effect on pravastatin pharmacokinetics.(4) In a study in 18 healthy subjects, itraconazole (400 mg) increased the Cmax, AUC, and half-life of a single dose of atorvastatin (20 mg) by 38%, 150%, 30%, respectively.(5) |
ITRACONAZOLE, ITRACONAZOLE MICRONIZED, SPORANOX, TOLSURA |
Selected HMG Co-A Reductase Inhibitors/Fluconazole SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Fluconazole(1-2) may inhibit the metabolism of atorvastatin, lovastatin, and simvastatin by CYP3A4. Fluconazole may inhibit the metabolism of fluvastatin by CYP2C9.(3) CLINICAL EFFECTS: Concurrent use of fluconazole(1,2,4-6) or voriconazole(3) may result in elevated levels of atorvastatin, fluvastatin, lovastatin, and simvastatin and rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on fluvastatin who are CYP2C9 intermediate or poor metabolizers may have increased fluvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: Do not use fluvastatin in doses greater than 20 mg twice daily in patients receiving fluconazole.(6) Concurrent use of fluconazole with atorvastatin, fluvastatin, lovastatin, or simvastatin should be approached with caution. Patients should be carefully monitored for and instructed to report any signs of myopathy. Adjustment of the statin dose may be required. DISCUSSION: In a study in 12 healthy subjects, pretreatment with fluconazole (400 mg Day 1, 200 mg/day on Days 2-4) increased fluvastatin area-under-curve (AUC) and maximum concentration (Cmax) by 84% and 44%, respectively.(3,5) Fluvastatin half-life increased by 80%.(3) There are four case reports of rhabdomyolysis following the addition of fluconazole to patients previously stabilized on simvastatin therapy(1,4,8,9) and one case report of rhabdomyolysis during concurrent fluconazole and atorvastatin.(6) In a randomized, double-blind, cross-over study in 14 healthy males, pretreatment with fluconazole (200 mg daily for 11 days) increased the AUC and Cmax of a single dose of rosuvastatin (80 mg on Day 8) by 14% and 9%, respectively. These changes were not considered clinically significant.(7) In a PKPB model, concurrent use of atorvastatin (40 mg daily) with fluconazole (400 mg daily for 5 days) increased the simulated Cmax ratio and AUC ratio of atorvastatin by 1.42 and 2.17, respectively, and increased the simulated Cmax ratio and AUC ratio of atorvastatin lactone by 2.94 and 3.82, respectively.(10) One or more of the drug pairs linked to this monograph have been included in a list of interactions that should be considered "high-priority" for inclusion and should not be inactivated in EHR systems. This DDI subset was vetted by an expert panel commissioned by the U.S. Office of the National Coordinator (ONC) for Health Information Technology. |
DIFLUCAN, FLUCONAZOLE, FLUCONAZOLE-NACL |
Atorvastatin (Less Than or Equal To 20 mg); Pitavastatin; Pravastatin (Less Than or Equal To 40 mg)/Clarithromycin SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Clarithromycin may inhibit the metabolism of atorvastatin and pravastatin by CYP3A4. CLINICAL EFFECTS: Concurrent clarithromycin may result in increased levels of atorvastatin and pravastatin, which may produce rhabdomyolysis. Symptoms of rhabdomyolysis include muscle pain, tenderness, weakness, elevated creatine kinase levels, and reddish-brown, heme positive urine. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Do not exceed a dosage of 20 mg daily of atorvastatin(1) or 40 mg daily of pravastatin(2) in patients receiving clarithromycin.(1) If possible, consider suspending statin therapy during macrolide therapy. Monitor patients receiving concurrent therapy for signs of rhabdomyolysis. DISCUSSION: In a study in healthy subjects, clarithromycin increased the area-under-curve (AUC) of simvastatin, atorvastatin, and pravastatin by 10-fold, greater than 4-fold, and almost 2-fold, respectively.(3) In a study, concurrent clarithromycin (500 mg BID for 9 days) increased the AUC and maximum concentration (Cmax) of atorvastatin (80 mg daily for 8 days) by 4.4-fold and 5.4-fold, respectively.(1) In a study concurrent clarithromycin (500 mg BID for 9 days) increased the AUC and Cmax of pravastatin (40 mg daily for 8 days) by 110% and 128%, respectively.(2) In a study, pretreatment with erythromycin (500 mg 4 times daily for 6 days) increased the area-under-curve (AUC) and maximum concentration (Cmax) of a single dose of pitavastatin (4 mg on Day 4) by 2.8-fold and 3.6-fold, respectively.(4) |
CLARITHROMYCIN, CLARITHROMYCIN ER, LANSOPRAZOL-AMOXICIL-CLARITHRO, OMECLAMOX-PAK, VOQUEZNA TRIPLE PAK |
Atorvastatin; Fluvastatin/Voriconazole SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Voriconazole may inhibit the metabolism of atorvastatin by CYP3A4.(1) Voriconazole may inhibit the metabolism of fluvastatin by CYP2C9.(1) CLINICAL EFFECTS: Concurrent use of voriconazole(1) may result in elevated levels of atorvastatin and fluvastatin and increase the risk of rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on fluvastatin who are CYP2C9 intermediate or poor metabolizers may have increased fluvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: Concurrent use of voriconazole with atorvastatin or fluvastatin should be approached with caution. Consider adjusting the dose of the statin to use the lowest dose possible(2,3) or possibly suspending therapy during antifungal treatment. Patients should be carefully monitored for and instructed to report any signs of myopathy. DISCUSSION: Voriconazole has been shown to inhibit the metabolism of lovastatin in human liver microsomes in vitro. Voriconazole has also been shown to inhibit CYP2C9 metabolism.(1) |
VFEND, VFEND IV, VORICONAZOLE |
Atorvastatin (Less Than or Equal To 20 mg); Rosuvastatin (Less Than or Equal To 10 mg)/Elbasvir-Grazoprevir SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Elbasvir-grazoprevir may inhibit intestinal BCRP, resulting in increased absorption of atorvastatin and rosuvastatin.(1,2) CLINICAL EFFECTS: Concurrent use of elbasvir-grazoprevir may result in elevated levels of and toxicity from atorvastatin and rosuvastatin, including rhabdomyolysis.(1,2) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: In patients requiring elbasvir-grazoprevir, do not use more than 20 mg daily of atorvastatin or 10 mg daily of rosuvastatin.(1,2) Instruct patients to report symptoms of muscle pain, tenderness, or weakness. DISCUSSION: In a study in 16 healthy subjects, elbasvir-grazoprevir (50-200 mg daily) increased the maximum concentration (Cmax) and area-under-curve (AUC) of a single dose of atorvastatin (10 mg) by 4.34-fold and 1.94-fold, respectively. The minimum concentration (Cmin) of atorvastatin decreased by 81%. There were no clinically significant effects on elbasvir-grazoprevir.(1,2) In a study in 12 healthy subjects, elbasvir-grazoprevir (50-200 mg daily) increased the Cmax and AUC of a single dose of rosuvastatin (10 mg) by 5.49-fold and 2.26-fold, respectively. There were no clinically significant effects on rosuvastatin Cmin or on elbasvir-grazoprevir.(1,2) |
ZEPATIER |
Selected MAOIs/Selected Antihypertensive Agents SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Both MAOIs and antihypertensive agents may increase the risk of postural hypotension.(1,2) CLINICAL EFFECTS: Postural hypotension may occur with concurrent therapy of MAOIs and antihypertensive agents.(1,2) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer of phenelzine states all patients should be followed closely for symptoms of postural hypotension. Hypotensive side effects have occurred in patients who have been hypertensive and normotensive, as well as hypotensive at initiation of phenelzine.(1) The manufacturer of tranylcypromine states hypotension has been observed most commonly but not exclusively in patients with pre-existing hypertension. Tranylcypromine doses greater than 30 mg daily have a major side effect of postural hypotension and can lead to syncope. Gradual dose titration is recommended to decrease risk of postural hypotension. Combined use with other agents known to cause hypotension have shown to have additive side effects and should be monitored closely.(2) Monitor the patient for signs and symptoms of postural hypotension including dizziness, lightheadedness, or weakness, especially upon standing. Monitor blood pressure as well as orthostatic vitals and adjust antihypertensive therapy, including decreasing the dose, dividing doses, or scheduling doses at bedtime, as needed to maintain goal blood pressure. If blood pressure remains hypotensive, consider decreasing the dose of phenelzine or tranylcypromine. In some cases, discontinuation of one or both agents may be necessary.(3) Normotensive patients on stable antihypertensive therapy who are started on either phenelzine or tranylcypromine may be at increased risk for hypotension. Hypertensive patients on stable phenelzine or tranylcypromine who require antihypertensive therapy would be at decreased risk for hypotension. DISCUSSION: A review article describes the pharmacology of phenelzine and tranylcypromine as non-selective MAOIs which inhibit both type A and type B substrates. Orthostatic hypotension is described as the most common MAOI side effect and usually occurs between initiation and the first 3-4 weeks of therapy.(3) In a double-blind study, 71 patients were randomized to receive a 4-week trial of either tranylcypromine, amitriptyline, or the combination. The number of patients reporting dizziness at 4 weeks was not different between the three treatment groups (tranylcypromine 52.4%; amitriptyline 65%; combination 66.7%). Blood pressure (BP) assessment noted a significant drop in standing BP in the tranylcypromine group compared to baseline (systolic BP change = -10 mmHg; p<0.02 and diastolic BP change = -9 mmHg; p<0.02). Combination therapy also had a significant drop in standing BP compared to baseline (systolic BP change = -9 mmHg; p<0.02). Patients receiving amitriptyline had no significant change in BP from baseline at 4 weeks. All three groups had a trend toward increasing orthostatic hypotension in BP changes from lying to standing. The change in orthostatic hypotension was significant in the amitriptyline group with an average systolic BP orthostatic drop of -9 mmHg (p<0.05).(4) A randomized, double-blind study of 16 inpatients with major depressive disorder were treated with either phenelzine or tranylcypromine. Cardiovascular assessments were completed at baseline and after 6 weeks of treatment. After 6 weeks, 5/7 patients (71%) who received phenelzine had a decrease in standing systolic BP greater than 20 mmHg from baseline. Head-up tilt systolic and diastolic BP decreased from baseline in patients on phenelzine (98/61 mmHg v. 127/65 mmHg, respectively; systolic change p=0.02 and diastolic change p=0.02). After 6 weeks, 6/9 patients (67%) who received tranylcypromine had a decrease in standing systolic BP greater than 20 mmHg from baseline. Head-up tilt systolic and diastolic BP decreased from baseline in patients on tranylcypromine (113/71 mmHg v. 133/69 mmHg, respectively; systolic change p=0.09 and diastolic change p=0.07).(5) Selected MAOIs linked to this monograph include: phenelzine and tranylcypromine. Selected antihypertensive agents include: ACE inhibitors, alpha blockers, ARBs, beta blockers, calcium channel blockers, aprocitentan, clonidine, hydralazine and sparsentan. |
NARDIL, PARNATE, PHENELZINE SULFATE, TRANYLCYPROMINE SULFATE |
Atorvastatin/Ribociclib SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Ribociclib may inhibit the metabolism of atorvastatin by CYP3A4.(1,2) CLINICAL EFFECTS: Concurrent administration may result in increased levels of the HMG-CoA reductase inhibitor, which may result in an increased risk of rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Consider a reduction of atorvastatin dose with concurrent ribociclib. Monitor patients receiving concurrent therapy for signs and symptoms of rhabdomyolysis if concurrent therapy is warranted. DISCUSSION: In a study in healthy subjects, concomitant administration of ribociclib (400 mg once daily for 8 days) with midazolam increased the midazolam maximum concentration (Cmax) and area under the curve (AUC) by 2.1-fold and 3.8-fold, respectively. Administration of ribociclib 600 mg once daily is predicted to increase the midazolam Cmax and AUC by 2.4-fold and 5.2-fold, respectively. |
KISQALI |
Tizanidine/Selected Antihypertensives SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Tizanidine is an alpha-2 agonist. Concurrent use with antihypertensive agents may result in additive effects on blood pressure.(1) CLINICAL EFFECTS: Concurrent use of antihypertensives and tizanidine may result in hypotension.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients receiving concurrent therapy should be monitored for hypotension. The risk of hypotension may be decreased by careful titration of tizanidine dosages and monitoring for hypotension prior to dose advancement. Counsel patients about the risk of orthostatic hypotension.(1) DISCUSSION: Severe hypotension has been reported following the addition of tizanidine to existing lisinopril therapy.(2-4) |
TIZANIDINE HCL, ZANAFLEX |
Atorvastatin (Less Than or Equal To 20 mg)/Elvitegravir-Cobicistat-Emtricitabine-Tenofovir SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Cobicistat may inhibit the metabolism of atorvastatin by CYP3A4.(1,2) CLINICAL EFFECTS: Concurrent use of elvitegravir-cobicistat-emtricitabine-tenofovir may result in elevated levels of atorvastatin, which could result in rhabdomyolysis.(1,2) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: In patients requiring elvitegravir-cobicistat-emtricitabine-tenofovir, do not use more than 20 mg daily of atorvastatin.(1) In patients receiving elvitegravir-cobicistat-emtricitabine-tenofovir, consider the use of fluvastatin. Instruct patients to report symptoms of muscle pain, tenderness, or weakness. DISCUSSION: A study in 16 subjects found that elvitegravir-cobicistat-emtricitabine-tenofovir increased atorvastatin maximum concentration (Cmax) and area-under-curve (AUC) by 2.32-fold and 2.6-fold, respectively.(1) |
GENVOYA, STRIBILD |
Atorvastatin (Less Than or Equal To 20 mg)/Letermovir SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Letermovir may inhibit OATP1B1 and OATP1B3 and CYP3A4, resulting in increased concentrations of atorvastatin. CLINICAL EFFECTS: Concurrent use of letermovir may result in elevated levels of atorvastatin, which could result in myopathy or rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Do not exceed an atorvastatin dose of 20 mg daily when letermovir is coadministered with atorvastatin.(1) Use of atorvastatin is not recommended when administered concurrently with both letermovir and cyclosporine.(1) If concurrent therapy is deemed medically necessary, monitor patients for signs and symptoms of myopathy/rhabdomyolysis, including muscle pain/tenderness/weakness, fever, unusual tiredness, changes in the amount of urine, and/or discolored urine. DISCUSSION: In a study, letermovir (480 mg once daily) increased the area-under-curve (AUC), maximum concentration (Cmax), and C24hr of a single dose of atorvastatin (20 mg single dose, an OATP1B1/3 substrate) by 3.29-fold, 2.17-fold, 3.62-fold.(1) |
PREVYMIS |
Atorvastatin (Less Than or Equal To 40 mg)/Ciprofloxacin SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Ciprofloxacin may inhibit the metabolism of atorvastatin by CYP3A4.(1) CLINICAL EFFECTS: Concurrent use of ciprofloxacin may result in elevated levels of atorvastatin which could result in rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: For patients receiving atorvastatin (especially high doses), consider holding atorvastatin therapy for the duration of ciprofloxacin therapy. If atorvastatin is used with ciprofloxacin, consider limiting the dose of atorvastatin to less than or equal to 40 mg daily for the duration of ciprofloxacin therapy. Monitor patient for statin-associated myopathy. DISCUSSION: A specific interaction study between atorvastatin and ciprofloxacin has not been performed. Rhabdomyolysis has been reported with concurrent ciprofloxacin and simvastatin.(3-5) |
CIPRO, CIPROFLOXACIN, CIPROFLOXACIN HCL, CIPROFLOXACIN-D5W |
Atorvastatin/Ranolazine SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Ranolazine may inhibit the metabolism of atorvastatin by CYP3A4.(1,2,4-6) CLINICAL EFFECTS: Concurrent ranolazine may result in elevated levels of atorvastatin(1,2) which may result in myopathy and rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Consider a reduction of atorvastatin dose with concurrent ranolazine. DISCUSSION: In healthy subjects, ranolazine (1000 mg twice daily) increased mean exposure to atorvastatin by 40%. However, in one subject, exposure was increased by approximately 400%.(1) In healthy subjects, ranolazine (1000 mg twice daily) increased plasma levels of simvastatin (80 mg daily) and its active metabolite each by 2-fold.(1) In healthy subjects, simvastatin (20 mg daily) had no effect on ranolazine levels.(1) In a study in 17 healthy volunteers, simvastatin (80 mg daily) did not have a significant effect on ranolazine sustained release (SR, 1750 mg initial dose followed by 1000 mg twice daily) pharmacokinetics with the mean area under the curve (AUC), maximum concentration (Cmax), and minimum concentration (Cmin) being within 80% to 125%. In contrast, ranolazine SR increased the Cmax of simvastatin lactone, simvastatin acid, and HMG-CoA reductase inhibitor activity by 2-fold with the corresponding AUC increases in the range of 40% to 60%.(2,7) In a case report, a patient had been maintained on simvastatin for 12 years, one of which with concurrent cyclosporine. Two months after the addition of carvedilol, diltiazem, and ranolazine, the patient developed rhabdomyolysis.(8) In a case report, a patient had been maintained on a stable dose of simvastatin (80 mg). Ten days after the addition of ranolazine (500 mg extended release) was added to the patient's medication regimen, the patient developed rhabdomyolysis.(9) |
ASPRUZYO SPRINKLE, RANOLAZINE ER |
Lacosamide/Beta-Blockers; Calcium Channel Blockers SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Lacosamide may enhance the slow inactivation of voltage-gated sodium channels and may cause dose-dependent bradycardia, prolongation of the PR interval, atrioventricular (AV) block, or ventricular tachyarrhythmia.(1) CLINICAL EFFECTS: Concurrent use of lacosamide and agents that affect cardiac conduction (beta-blockers, calcium channel blockers) may increase the risk of bradycardia, prolongation of the PR interval, atrioventricular (AV) block, or ventricular tachyarrhythmia.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Lacosamide should be used with caution in patients on concomitant medications that affect cardiac conduction, including beta-blockers and calcium channel blockers.(1) If concurrent use is needed, obtain an ECG before lacosamide therapy and after lacosamide dose is titrated to steady-state.(1) Patients should be monitored closely when lacosamide is given intravenously.(1) DISCUSSION: In a clinical trial in patients with partial-onset seizures, asymptomatic first-degree atrioventricular (AV) block occurred in 4/944 (0.4%) of patient who received lacosamide compared to 0/364 (0%) with placebo.(1) In a clinical trial in patients with diabetic neuropathy, asymptomatic first-degree AV block occurred in 5/1023 (0.5%) of patients who received lacosamide compared to 0/291 (0%) with placebo.(1) Second-degree and complete AV block have been reported in patients with seizures.(1) One case of profound bradycardia was observed in a patient during a 15-minute infusion of 150 mg of lacosamide.(1) Two postmarketing reports of third-degree AV block in patients with significant cardiac history and also receiving metoprolol and amlodipine during infusion of lacosamide injection at doses higher than recommended have been reported.(1) A case report of an 88 year old female taking bisoprolol documented complete AV block after initiation of lacosamide. The patient required pacemaker implementation.(2) |
LACOSAMIDE, MOTPOLY XR, VIMPAT |
Atorvastatin/Fenofibrate SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Unknown. CLINICAL EFFECTS: Concurrent administration of atorvastatin and fibric acid derivatives has been associated with severe myopathy, rhabdomyolysis and acute renal failure. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: When possible, avoid administration of atorvastatin and fibric acid derivatives concomitantly unless patients require aggressive therapy. Instruct patients to report any unexplained muscle pain, tenderness or weakness. If muscular symptoms develop, monitor serum creatine kinase levels and renal function. One or both agents may need to be discontinued. The American College of Cardiology and American Heart Association Guidelines state that fenofibrate may be considered concomitantly with a low- or moderate-intensity statin only if the benefits from atherosclerotic cardiovascular risk reduction or triglyceride lowering when triglycerides are greater than or equal to 500 mg/dL are judged to outweigh the potential risk for adverse effects.(20) The European Society of Cardiology and European Atherosclerosis Society recommend concomitant statin-fenofibrate therapy in patients with atherogenic combined dyslipidemia, especially patients with metabolic syndrome and/or diabetes.(21) The US manufacturer of fenofibrate states that concurrent therapy with HMG CO-A reductase inhibitors should be avoided unless the benefit of further decreases in lipid levels is likely to outweigh the increased risk. Fenofibrate may be preferred over gemfibrozil in patients who do require concurrent statin and fibrate therapy.(9) DISCUSSION: Concurrent fenofibrate (145 mg) with atorvastatin (20 mg) decreased the atorvastatin area-under-curve (AUC) by 17% (range from 67% decrease to 44% increase). Atorvastatin maximum concentration (Cmax) and the kinetics of fenofibrate were not significantly affected. The risk of rhabdomyolysis with concurrent fibrate and HMG CoA reductase inhibitor therapy appears to be greater with gemfibrozil. Analysis of the FDA Adverse Event Report database indicates that the rate is 30 times higher with gemfibrozil than with fenofibrate. In an analysis of data from the Veteran's Administration over a 2 year period, there were 149 reports of rhabdomyolysis in 93,677 (0.016%) patients receiving concurrent gemfibrozil and statin therapy compared with no reports in 1,830 patients receiving concurrent fenofibrate and statin therapy. In a study in 66 healthy volunteers, concomitant administration of fenofibrate (160 mg for 7 days) and atorvastatin (40 mg single dose) did not result in a clinically significant change in the atorvastatin AUC.(22) A meta-analysis of 6 randomized controlled trials (including approximately 1600 patients) found no cases of myopathy or rhabdomyolysis in combination therapy of fenofibrate with simvastatin, fluvastatin, or atorvastatin. A comparison of the incidence of creatine kinase greater than 5 times the ULN between combination statin-fenofibrate and statin monotherapy was found to be not significant.(23) A meta-analysis of 13 randomized controlled trials (including approximately 7000 patients) found no significant difference in the incidence of elevated creatine kinase or muscle-associated adverse effects between single-drug statin therapy or combination fenofibrate-statin therapy.(24) |
FENOFIBRATE, FENOFIBRIC ACID, FENOGLIDE, FIBRICOR, LIPOFEN, TRICOR, TRILIPIX |
Atorvastatin; Lovastatin; Simvastatin/Palbociclib SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Palbociclib is a weak CYP3A4 inhibitor.(1) Atorvastatin, lovastatin, and simvastatin are sensitive CYP3A4 substrates.(2) Palbociclib may inhibit the metabolism of atorvastatin, lovastatin, and simvastatin. CLINICAL EFFECTS: Concurrent palbociclib may result in increased levels of atorvastatin, lovastatin, or simvastatin, which may result in hepatic injury, myopathy or rhabdomyolysis. Symptoms of rhabdomyolysis include muscle pain, tenderness, weakness, elevated creatine kinase levels, and reddish-brown, heme positive urine. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The manufacturer of palbociclib states that drug levels of sensitive CYP3A4 substrates like atorvastatin, lovastatin, and simvastatin may be elevated by palbociclib and to consider dose reduction of the CYP3A4 substrate.(1) Consider the risks versus benefits of continuing antilipidemic therapy. Monitor patients receiving concurrent therapy for signs of rhabdomyolysis. DISCUSSION: A study in 26 healthy women found that palbociclib at steady state increased the maximum concentration (Cmax) and area-under-curve (AUC) of concomitant midazolam (a CYP3A4 substrate) by 37 % and 61 %, respectively, compared to midazolam alone.(3) A case report described a potential interaction in which palbociclib (125 mg daily) was initiated in a patient with metastatic breast cancer who had been taking atorvastatin (40 mg daily) for years. After two cycles of palbociclib, the patient developed rapidly progressive muscle pain and weakness, elevated creatinine kinase of 14,572 units/L, and died after 8 days of hospitalization.(4) A case of transaminitis and rhabdomyolysis was reported during a phase 2 trial of palbociclib in a patient on concomitant simvastatin (80 mg daily). The symptoms improved upon discontinuation of palbociclib.(4,5) In a PKPB model, concurrent use of atorvastatin (40 mg daily) with palbociclib (125 mg daily for 2 months) increased the simulated Cmax ratio and AUC ratio of atorvastatin by 1.16 and 1.36, respectively, and increased the simulated Cmax ratio and AUC ratio of atorvastatin lactone by 1.58 and 1.73, respectively.(6) |
IBRANCE |
HMG Co-A Reductase Inhibitors/Pazopanib SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: The mechanism of interaction is unknown. Statins and pazopanib individually may cause ALT elevations.(1) They share metabolic pathways (CYP3A4) and drug transporters (P-glycoprotein (P-gp), BCRP). Pazopanib is a weak inhibitor of CYP3A4, and the statins inhibit P-gp.(2-5) Their combination may result in elevated drug exposure and toxicity. CLINICAL EFFECTS: Concomitant use of pazopanib and simvastatin is associated with ALT elevations greater than 3 x ULN. Rhabdomyolysis has been reported with the combination of pazopanib and rosuvastatin. Symptoms of rhabdomyolysis include muscle pain, tenderness, weakness, elevated creatine kinase levels, and reddish-brown, heme positive urine. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Consider the risks versus benefits of continuing antilipidemic therapy. Monitor patients receiving concurrent therapy for signs of hepatotoxicity and rhabdomyolysis. The manufacturer of pazopanib states that if ALT elevation occurs in a patient on concomitant simvastatin, pazopanib should be held or discontinued according to recommendations in the pazopanib prescribing information. Alternatively, consider discontinuing simvastatin. There is insufficient data to recommend alternative statins for use in combination with pazopanib.(1) DISCUSSION: A review of 11 pazopanib clinical trials found that ALT elevations greater than 3 x ULN occurred in 27 % (11/41) and 14 % (126/895) of patients with and without concomitant simvastatin, respectively. ALT elevations also occurred more frequently in patients on atorvastatin and on any statin, but the differences were not statistically significant. ALT recovered to less than 2.5 x ULN in all ten patients with follow-up data. Two patients did not have any modification to therapy, while the rest discontinued one or both agents.(2) In a case report, a 73-year-old woman with metastatic renal cell carcinoma presented with rhabdomyolysis, transaminitis, and renal injury six months after starting pazopanib. She had been on rosuvastatin for several years. Pazopanib and rosuvastatin were discontinued and the patient recovered. Rhabdomyolysis due to the combination of rosuvastatin and pazopanib was suspected, though rosuvastatin is primarily metabolized by CYP2C9 and pazopanib is not known to inhibit CYP2C9.(3) |
PAZOPANIB HCL, VOTRIENT |
Apomorphine/Selected Antihypertensives and Vasodilators SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Apomorphine causes dose-dependent decreases in blood pressure. Concurrent use with antihypertensive agents may result in additive effects on blood pressure.(1) CLINICAL EFFECTS: Concurrent use of antihypertensives and apomorphine may result in orthostatic hypotension with or without dizziness, nausea, or syncope.(1) PREDISPOSING FACTORS: The risk of orthostatic hypotension may be increased during dose escalation of apomorphine and in patients with renal or hepatic impairment.(1) PATIENT MANAGEMENT: Patients receiving concurrent therapy should be monitored for hypotension. Counsel patients about the risk of orthostatic hypotension.(1) DISCUSSION: Healthy volunteers who took sublingual nitroglycerin (0.4 mg) concomitantly with apomorphine experienced a mean largest decrease in supine systolic blood pressure (SBP) of 9.7 mm Hg and in supine diastolic blood pressure (DBP) of 9.3 mm Hg, and a mean largest decrease in standing SBP and DBP of 14.3 mm Hg and 13.5 mm Hg, respectively. The maximum decrease in SBP and DBP was 65 mm Hg and 43 mm Hg, respectively. When apomorphine was taken alone, the mean largest decrease in supine SBP and DBP was 6.1 mm Hg and 7.3 mm Hg, respectively, and in standing SBP and DBP was 6.7 mm Hg and 8.4 mm Hg, respectively.(1) |
APOKYN, APOMORPHINE HCL |
Lemborexant (Less Than or Equal To 5 mg)/Weak CYP3A4 Inhibitors SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Inhibitors of CYP3A4 may inhibit the metabolism of lemborexant.(1) CLINICAL EFFECTS: Concurrent use of an inhibitor of CYP3A4 may result in increased levels of and effects from lemborexant, including somnolence, fatigue, CNS depressant effects, daytime impairment, headache, and nightmare or abnormal dreams.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The maximum recommended dose of lemborexant with concurrent use of a weak CYP3A4 inhibitors should not exceed 5 mg per dose.(1) DISCUSSION: Lemborexant is a CYP3A4 substrate. In a PKPB model, concurrent use of lemborexant with itraconazole increased area-under-curve (AUC) and concentration maximum (Cmax) by 3.75-fold and 1.5-fold, respectively. Concurrent use of lemborexant with fluconazole increased AUC and Cmax by 4.25-fold and 1.75-fold, respectively.(1) Weak inhibitors of CYP3A4 include: alprazolam, amiodarone, amlodipine, asciminib, azithromycin, Baikal skullcap, berberine, bicalutamide, blueberry, brodalumab, cannabidiol, capivasertib, chlorzoxazone, cilostazol, cimetidine, ciprofloxacin, clotrimazole, cranberry, cyclosporine, daclatasvir, daridorexant, delavirdine, dihydroberberine, diosmin, everolimus, flibanserin, fosaprepitant, fostamatinib, ginkgo, givinostat, glecaprevir/pibrentasvir, goldenseal, grazoprevir, isoniazid, istradefylline, ivacaftor, lacidipine, lapatinib, larotrectinib, lazertinib, leflunomide, levamlodipine, linagliptin, lomitapide, lurasidone, mavorixafor, olaparib, osilodrostat, palbociclib, pazopanib, peppermint oil, piperine, propiverine, propofol, ranitidine, ranolazine, resveratrol, roxithromycin, rucaparib, selpercatinib, simeprevir, sitaxsentan, skullcap, suvorexant, teriflunomide, ticagrelor, tolvaptan, trofinetide, viloxazine, and vonoprazan.(1,2) |
DAYVIGO |
Ubrogepant/Weak CYP3A4 Inhibitors SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Weak inhibitors of CYP3A4 may inhibit the metabolism of ubrogepant.(1) CLINICAL EFFECTS: Concurrent use of ubrogepant with weak CYP3A4 inhibitors may result in an increase in exposure of ubrogepant.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer recommends a dosage adjustment of ubrogepant when used concomitantly with weak CYP3A4 inhibitors. Initial dose of ubrogepant should not exceed 50 mg when used concomitantly with weak inhibitors of CYP3A4. A second dose may be given within 24 hours but should not exceed 50 mg when used concurrently with weak CYP3A4 inhibitors.(1) DISCUSSION: Coadministration of ubrogepant with verapamil, a moderate CYP3A4 inhibitor, resulted in a 3.5-fold and 2.8-fold increase in area-under-curve (AUC) and concentration maximum (Cmax), respectively. No dedicated drug interaction study was conducted to assess concomitant use with weak CYP3A4 inhibitors. The conservative prediction of the maximal potential increase in ubrogepant exposure with weak CYP3A4 inhibitors is not expected to be more than 2-fold.(1) Weak inhibitors of CYP3A4 include: alprazolam, amiodarone, amlodipine, asciminib, azithromycin, Baikal skullcap, berberine, bicalutamide, blueberry, brodalumab, cannabidiol, capivasertib, chlorzoxazone, cilostazol, cimetidine, ciprofloxacin, clotrimazole, cranberry, cyclosporine, daclatasvir, delavirdine, dihydroberberine, diosmin, elagolix, everolimus, flibanserin, fosaprepitant, fostamatinib, givinostat, glecaprevir/pibrentasvir, goldenseal, grazoprevir, isoniazid, istradefylline, ivacaftor, lacidipine, lapatinib, larotrectinib, lazertinib, leflunomide, levamlodipine, linagliptin, lomitapide, lurasidone, mavorixafor, osilodrostat, palbociclib, pazopanib, peppermint oil, piperine, propiverine, propofol, ranitidine, ranolazine, resveratrol, roxithromycin, simeprevir, sitaxsentan, skullcap, suvorexant, teriflunomide, ticagrelor, tolvaptan, trofinetide, viloxazine, and vonoprazan.(2,3) |
UBRELVY |
Amlodipine/Apalutamide; Carbamazepine SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Concurrent use of apalutamide or carbamazepine may induce the CYP3A4 mediated metabolism of amlodipine.(1-3) CLINICAL EFFECTS: Concurrent use of apalutamide or carbamazepine may decrease levels and effectiveness of amlodipine.(1-3) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer of apalutamide recommends substituting amlodipine with a drug not metabolized by CYP3A4 when possible. If concurrent therapy with apalutamide or carbamazepine is necessary, monitor the patient for a decrease in the therapeutic effects of amlodipine. The dose of amlodipine may need to be adjusted.(1-3) DISCUSSION: Apalutamide is a strong inducer of CYP3A4. Amlodipine is metabolized by CYP3A4 and has been shown to be affected by other strong CYP3A4 inducers. In a study in 16 hypertensive chronic kidney disease patients, amlodipine levels decreased an average of 82% after initiation of rifampin. In eight of the 16 patients, the levels were undetectable.(4) A case report describes a 53-year-old women with schizophrenia and hypertension who was stable on paliperidone and amlodipine 5 mg daily. Upon carbamazepine initiation, amlodipine levels decreased by 68%, and blood pressure increased from a baseline of 138/91 to 160/103. Blood pressure normalized after discontinuation of carbamazepine.(5) |
CARBAMAZEPINE, CARBAMAZEPINE ER, CARBATROL, EPITOL, EQUETRO, ERLEADA, TEGRETOL, TEGRETOL XR |
Selected HMG-CoA Reductase Inhibitors/Fostemsavir SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Fostemsavir may inhibit OATP1B1 and OATP1B3, resulting in decreased hepatocyte uptake and increased plasma concentrations of atorvastatin, fluvastatin, pitavastatin, rosuvastatin, and simvastatin.(1) CLINICAL EFFECTS: Concurrent use of fostemsavir may result in elevated levels of and toxicity from atorvastatin, fluvastatin, pitavastatin, rosuvastatin, or simvastatin, including rhabdomyolysis.(1) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on fluvastatin who are CYP2C9 intermediate or poor metabolizers may have increased fluvastatin concentrations and risk of myopathy. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: The manufacturer of fostemsavir states that the lowest possible starting dose of statins should be used. Patients should be monitored for statin-associated adverse events.(1) DISCUSSION: In a study, fostemsavir 600 mg twice daily increased the area-under-curve (AUC) and maximum concentration (Cmax) of single-dose rosuvastatin 10 mg by 1.69-fold and 1.78-fold, respectively.(1) |
RUKOBIA |
BCRP, OATP1B1, and OATP1B3 Substrates/Enasidenib SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Enasidenib is an inhibitor of the BCRP, OATP1B1, and OATP1B3 transporters and may increase the absorption and/or decrease the elimination of drugs that are substrates of these transporters.(1) CLINICAL EFFECTS: Concurrent use of enasidenib with drugs that are substrates of the BCRP, OATP1B1, and OATP1B3 transporters may result in increased frequency and severity of toxicity of the substrate.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The dose of the BCRP, OATP1B1, and OATP1B3 substrate should be reduced as recommended in the substrate prescribing information and as clinically indicated.(1) DISCUSSION: In a study, enasidenib 100 mg daily increased the maximum concentration (Cmax) and area-under-curve (AUC) of rosuvastatin 10 mg by 366% and 244%, respectively.(1) Substrates of BCRP, OATP1B1, and OATP1B3 that are linked to this monograph include: atorvastatin, glecaprevir, pibrentasvir, simvastatin, velpatasvir, and voxilaprevir.(1,2) |
IDHIFA |
BCRP or OATP1B1 Substrates/Eltrombopag SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Eltrombopag has been shown to inhibit BCRP and OATP1B1.(1-3) Inhibition of BCRP may increase absorption and/or decrease biliary excretion of substrates, while inhibition of OATP1B1 may decrease hepatic uptake of substrates. CLINICAL EFFECTS: Simultaneous use of eltrombopag with BCRP or OATP1B1 substrates may result in increased levels and side effects from the substrates.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer of eltrombopag states that concomitant BCRP or OATP1B1 substrates should be used cautiously. Patients on concurrent therapy should be closely monitored for adverse effects, and dose reduction of the substrate should be considered.(1) DISCUSSION: In a clinical trial in 39 healthy subjects, administration of eltrombopag (75 mg daily) increased the area-under-curve (AUC) and maximum concentration (Cmax) of a single dose of rosuvastatin (10 mg, a BCRP and OATP1B1 substrate) by 55% and 103%, respectively.(1,4) In a physiologically-based pharmacokinetic (PBPK) model, eltrombopag 75 mg was predicted to increase the AUC and Cmax of pitavastatin 1 mg by approximately 2-fold.(5) BCRP substrates linked to this monograph include: ciprofloxacin, imatinib, irinotecan, lapatinib, methotrexate, mitoxantrone, and topotecan.(1) OATP1B1 substrates linked to this monograph include: atorvastatin, bosentan, fluvastatin, glyburide, irinotecan, letermovir, pitavastatin, pravastatin, repaglinide, and simvastatin.(1) |
ALVAIZ, PROMACTA |
Sirolimus Protein-Bound/Slt Moderate and Weak CYP3A4 Inhibit SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Moderate and weak CYP3A4 inhibitors may inhibit the metabolism of sirolimus by CYP3A4.(1) CLINICAL EFFECTS: Concurrent use of moderate or weak CYP3A4 inhibitors may result in elevated levels of and side effects from sirolimus.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer of sirolimus protein-bound injection (Fyarro) states a dose reduction to 56 mg/m2 is recommended when used concurrently with moderate or weak CYP3A4 inhibitors. Concurrent use with strong CYP3A4 inhibitors should be avoided.(1) DISCUSSION: In an open, randomized, cross-over trial in 18 healthy subjects, concurrent single doses of diltiazem (120 mg) and sirolimus (10 mg) increased sirolimus area-under-curve (AUC) and maximum concentration (Cmax) by 60% and by 43%, respectively. Sirolimus apparent oral clearance and volume of distribution decreased by 38% and 45%, respectively. There were no effects on diltiazem pharmacokinetics or pharmacodynamics.(2) In a study in 26 healthy subjects, concurrent sirolimus (2 mg daily) with verapamil (180 mg twice daily) increased sirolimus AUC and Cmax by 2.2-fold and 2.3-fold, respectively. The AUC and Cmax of the active S-enantiomer of verapamil each increased by 1.5-fold. Verapamil time to Cmax (Tmax) was increased by 1.2 hours.(2) Moderate and weak CYP3A4 inhibitors linked to this monograph include: alprazolam, amlodipine, aprepitant, avacopan, azithromycin, berberine, berotralstat, bicalutamide, blueberry, brodalumab, chlorzoxazone, cilostazol, cimetidine, ciprofloxacin, clofazimine, conivaptan, daclatasvir, daridorexant, delavirdine, diosmin, entrectinib, erythromycin, estrogen, flibanserin, fluvoxamine, fosaprepitant, fosnetupitant, fostamatinib, ginkgo, givinostat, glecaprevir/pibrentasvir, goldenseal, grazoprevir, isoniazid, istradefylline, ivacaftor, lacidipine, lazertinib, lenacapavir, levamlodipine, linagliptin, lomitapide, lumateperone, lurasidone, mavorixafor, netupitant, omeprazole, osilodrostat, peppermint oil, piperine, propiverine, propofol, ranitidine, ranolazine, resveratrol, rimegepant, roxithromycin, scutellarin, simeprevir, sitaxsentan, suvorexant, ticagrelor, tofisopam, tolvaptan, trofinetide and vonoprazan.(3,4) |
FYARRO |
OATP1B1 Substrates/Midostaurin SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Midostaurin has been shown to inhibit OATP1B1.(1) Inhibition of OATP1B1 may decrease hepatic uptake of substrates. CLINICAL EFFECTS: Simultaneous use of midostaurin with OATP1B1 substrates may result in increased levels and side effects from the substrates.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer of midostaurin states that concomitant OATP1B1 substrates should be used cautiously. Patients on concurrent therapy should be closely monitored for adverse effects as dose adjustments of the substrate may be necessary.(1) DISCUSSION: In a study, single dose midostaurin 100 mg increased the area-under-curve (AUC) of single dose rosuvastatin by 48%. With a 50 mg twice daily dose, midostaurin is predicted to increase the AUC of an OATP1B1 substrate by up to 2-fold.(1) OATP1B1 substrates linked to this monograph include: atorvastatin, bosentan, fluvastatin, glyburide, irinotecan, letermovir, pitavastatin, pravastatin, repaglinide, rosuvastatin and simvastatin. |
RYDAPT |
Atorvastatin/Levoketoconazole SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Levoketoconazole may inhibit the metabolism of atorvastatin by CYP3A4.(1) CLINICAL EFFECTS: Concurrent use of levoketoconazole may result in elevated levels of atorvastatin and increase the risk of myopathy and rhabdomyolysis.(1,2) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: Concurrent use of levoketoconazole with atorvastatin may require a dose reduction. Use the lowest dose possible of atorvastatin and monitor for adverse reactions, especially if the atorvastatin dose exceeds 20 mg. Patients should be instructed to report any signs of myopathy.(1,2) Fluvastatin, pitavastatin and pravastatin, HMG-CoA reductase inhibitors that are not metabolized by CYP3A4, may be alternatives to atorvastatin in patients receiving levoketoconazole. DISCUSSION: In a drug interaction study with 23 healthy subjects, levoketoconazole (400 mg daily) increased the area-under-curve (AUC) and maximum concentration (Cmax) of atorvastatin by 317.6% and 96.7%, respectively.(1) |
RECORLEV |
Selected Calcium Channel Blockers/Nirmatrelvir-Ritonavir SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Nirmatrelvir-ritonavir may inhibit the metabolism of calcium channel blockers by CYP3A4.(1,2) CLINICAL EFFECTS: Concurrent use of nirmatrelvir-ritonavir may result in elevated levels of and toxicity from calcium channel blockers. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Concurrent use of nirmatrelvir-ritonavir and selected calcium channel blockers should be approached with caution. Monitor patients receiving concurrent therapy with nirmatrelvir-ritonavir and either amlodipine, diltiazem, felodipine, nicardipine, nifedipine, or verapamil for increased calcium channel blocker effects. The dosage of the calcium channel blocker may need to be adjusted.(1,2) The Journal of American College of Cardiology recommends a 50% reduction in the dose amlodipine for 8 days with the initiation of nirmatrelvir-ritonavir. Close monitoring of blood pressure and dose reduction or temporary discontinuation of calcium channel blockers may be needed. Resume calcium channel blockers 3 days after the last dose of nirmatrelvir-ritonavir.(3) DISCUSSION: Nirmatrelvir-ritonavir is a strong CYP3A4 inhibitor and may increase the levels of calcium channel blockers that are CYP3A4 substrates.(1,2) In a case report of a 80-year old female on verapamil, on day 2 of concurrent nirmatrelvir-ritonavir the patient presented to the hospital with symptomatic bradycardia (heart rate of 28 beats per minute and blood pressure of 58/35 mmHg) requiring hospitalization, medical management, and a temporary transvenous pacer.(4) |
PAXLOVID |
Atorvastatin; Rosuvastatin/Selected BCRP Inhibitors SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Atorvastatin and rosuvastatin are both substrates of the BCRP transporter.(1-3) Inhibitors of this transporter may increase intestinal absorption and hepatic uptake of BCRP substrates atorvastatin and rosuvastatin.(1-9) CLINICAL EFFECTS: Simultaneous use of BCRP inhibitors may result in increased levels and side effects from atorvastatin and rosuvastatin, including rhabdomyolysis.(1,3,5) PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. Patients on rosuvastatin with ABCG2 polymorphisms leading to decreased or poor BCRP transporter function may have increased rosuvastatin concentrations and risk of myopathy. PATIENT MANAGEMENT: Concurrent use may result in increased risk of side effects associated with atorvastatin and rosuvastatin. If concurrent therapy is warranted, close monitoring would be prudent for statin related side effects including rhabdomyolysis. The Canadian manufacturer of clopidogrel states that the dose of rosuvastatin should not exceed 20 mg daily when used concomitantly with clopidogrel.(6) There is no recommendation for rosuvastatin dose adjustments from the Australian and US manufacturers of clopidogrel.(7,8) Educate the patient of signs and symptoms of rhabdomyolysis. DISCUSSION: Atorvastatin and rosuvastatin are both BCRP substrates.(1-3) In a clinical study of 20 patients with stable coronary heart disease, single-dose clopidogrel 300 mg increased the area-under-curve (AUC) and maximum concentration (Cmax) of rosuvastatin by 2-fold and 1.3-fold, respectively. Multiple doses of clopidogrel 75 mg daily for 7 days increased rosuvastatin AUC by 1.4-fold but did not affect the Cmax.(5) In a pharmacokinetic study, concomitant use of lazertinib increased rosuvastatin Cmax by 2.2-fold and AUC by 2-fold.(4) BCRP inhibitors include: clopidogrel, encorafenib, and lazertinib.(3-9) |
BRAFTOVI, CLOPIDOGREL, CLOPIDOGREL BISULFATE, LAZCLUZE, PLAVIX |
Amlodipine; Levamlodipine/Slt Strong CYP3A4 Inhibit SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Strong CYP3A4 inhibitors may inhibit the first-pass and elimination metabolism of calcium channel blockers by CYP3A4. CLINICAL EFFECTS: The concurrent use of strong CYP3A4 inhibitors with calcium channel blockers metabolized by CYP3A4 may result in elevated levels of the calcium channel blocker and risk of adverse effects, including hypotension and bradycardia. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The concurrent use of strong CYP3A4 inhibitors with calcium channel blockers should be approached with caution. When these agents are used concurrently, the dose of the calcium channel blocker may need to be adjusted or an alternative agent considered. Monitor patients for increased calcium channel blocker effects. If the strong CYP3A4 inhibitor is discontinued, the dose of the calcium channel blocker may need to be increased and patients should be observed for decreased effects. DISCUSSION: Coadministration of a 180 mg dose of diltiazem (moderate CYP3A4 inhibitor) with 5 mg amlodipine resulted in a 60% increase in amlodipine systemic exposure. Strong inhibitor of CYP3A4 may increase plasma concentrations of amlodipine to a greater extent.(1) In a study in 19 healthy subjects, telaprevir (750 mg every 8 hours for 7 days) increased the maximum concentration (Cmax) and area-under-curve (AUC) of a single dose of amlodipine (5mg) by 1.27-fold and 2.79-fold, respectively.(3) Strong CYP3A4 inhibitors include: adagrasib, ceritinib, cobicistat, fluconazole, idelalisib, indinavir, itraconazole, ketoconazole, levoketoconazole, lopinavir, mibefradil, mifepristone, nefazodone, nelfinavir, posaconazole, ribociclib, saquinavir, tipranavir, troleandomycin, tucatinib, and voriconazole.(4,5) |
APTIVUS, DIFLUCAN, EVOTAZ, FLUCONAZOLE, FLUCONAZOLE-NACL, GENVOYA, ITRACONAZOLE, ITRACONAZOLE MICRONIZED, KALETRA, KETOCONAZOLE, KISQALI, KORLYM, KRAZATI, LOPINAVIR-RITONAVIR, MIFEPREX, MIFEPRISTONE, NEFAZODONE HCL, NOXAFIL, POSACONAZOLE, PREZCOBIX, RECORLEV, SPORANOX, STRIBILD, SYMTUZA, TOLSURA, TUKYSA, TYBOST, VFEND, VFEND IV, VIRACEPT, VORICONAZOLE, ZYDELIG, ZYKADIA |
Atorvastatin (Less Than or Equal to 40 mg)/Resmetirom SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Resmetirom is an inhibitor of the BCRP, OATP1B1, and OATP1B3 transporters and may increase the absorption and/or decrease the elimination of atorvastatin.(1,2) CLINICAL EFFECTS: Concurrent use of resmetirom may result in elevated levels of atorvastatin, which could result in rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The US manufacturer of resmetirom states that the dose of atorvastatin should not exceed 40 mg daily when used concurrently with resmetirom.(1) If concurrent therapy is deemed medically necessary, monitor patients for signs and symptoms of myopathy/rhabdomyolysis, including muscle pain/tenderness/weakness, fever, unusual tiredness, changes in the amount of urine, and/or discolored urine. DISCUSSION: In a study, resmetirom (100 mg daily) increased the area-under-curve (AUC) of atorvastatin 20 mg by 1.4-fold, with no change in the maximum concentration (Cmax). Atorvastatin lactone Cmax and AUC increased 2.0-fold and 1.8-fold, respectively.(1) |
REZDIFFRA |
Atorvastatin/Voclosporin SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Voclosporin is an inhibitor of the OATP1B1 and OATP1B3 transporters and may increase the absorption and/or decrease the elimination of atorvastatin.(1,2) CLINICAL EFFECTS: Concurrent use of voclosporin may result in elevated levels of atorvastatin, which could result in rhabdomyolysis. PREDISPOSING FACTORS: The risk for myopathy or rhabdomyolysis may be greater in patients 65 years and older, inadequately treated hypothyroidism, renal impairment, carnitine deficiency, malignant hyperthermia, or in patients with a history of myopathy or rhabdomyolysis. Patients with a SLCO1B1 polymorphism that leads to decreased function of the hepatic uptake transporter OATP1B1 may have increased statin concentrations and be predisposed to myopathy or rhabdomyolysis. PATIENT MANAGEMENT: The US manufacturer of voclosporin states that atorvastatin should be monitored closely for adverse events including myopathy and rhabdomyolysis. Consider using the lowest effective dose of atorvastatin.(1) If concurrent therapy is deemed medically necessary, monitor patients for signs and symptoms of myopathy/rhabdomyolysis, including muscle pain/tenderness/weakness, fever, unusual tiredness, changes in the amount of urine, and/or discolored urine. DISCUSSION: Concurrent use of voclosporin (23.7 mg twice daily) increased the concentration maximum (Cmax) and area-under-curve (AUC) of a 40 mg single dose of simvastatin (an OATP1B1 and OATP1B3 substrate) by 3.1-fold and 1.8-fold, respectively.(1) |
LUPKYNIS |
The following contraindication information is available for CADUET (amlodipine besylate/atorvastatin calcium):
Drug contraindication overview.
*Active liver disease, including unexplained, persistent elevations of serum aminotransferases. *Lactation. *Known hypersensitivity to atorvastatin or any ingredient in the formulation. Amlodipine is contraindicated in patients with known hypersensitivity to the drug.
*Active liver disease, including unexplained, persistent elevations of serum aminotransferases. *Lactation. *Known hypersensitivity to atorvastatin or any ingredient in the formulation. Amlodipine is contraindicated in patients with known hypersensitivity to the drug.
There are 2 contraindications.
Absolute contraindication.
Contraindication List |
---|
Hepatic failure |
Lactation |
There are 12 severe contraindications.
Adequate patient monitoring is recommended for safer drug use.
Severe List |
---|
Acute renal failure |
Alcohol use disorder |
Disease of liver |
Hemorrhagic stroke |
Immune-mediated necrotizing myopathy |
Intracerebral hemorrhage |
Myopathy with CK elevation |
Pregnancy |
Rhabdomyolysis |
Severe aortic valve stenosis |
Severe hepatic disease |
Severe hypotension |
There are 4 moderate contraindications.
Clinically significant contraindication, where the condition can be managed or treated before the drug may be given safely.
Moderate List |
---|
Hyperglycemia |
Kidney disease with reduction in glomerular filtration rate (GFr) |
Memory impairment |
Untreated hypothyroidism |
The following adverse reaction information is available for CADUET (amlodipine besylate/atorvastatin calcium):
Adverse reaction overview.
Adverse effects reported in 2% or more of patients receiving atorvastatin in clinical trials that occurred more frequently than with placebo include nasopharyngitis, arthralgia, diarrhea, pain in extremity, urinary tract infection, dyspepsia, nausea, musculoskeletal pain, muscle spasms, myalgia, insomnia, and pharyngolaryngeal pain. Adverse effects reported in 1% or more of patients receiving amlodipine include edema, dizziness, flushing, palpitations, fatigue, nausea, abdominal pain, and somnolence. Edema, flushing, palpitations, and somnolence may occur more commonly in women than in men. Edema is dose related and may be less frequent with concomitant use of an angiotensin-converting enzyme (ACE) inhibitor or angiotensin II receptor antagonist.
Adverse effects reported in 2% or more of patients receiving atorvastatin in clinical trials that occurred more frequently than with placebo include nasopharyngitis, arthralgia, diarrhea, pain in extremity, urinary tract infection, dyspepsia, nausea, musculoskeletal pain, muscle spasms, myalgia, insomnia, and pharyngolaryngeal pain. Adverse effects reported in 1% or more of patients receiving amlodipine include edema, dizziness, flushing, palpitations, fatigue, nausea, abdominal pain, and somnolence. Edema, flushing, palpitations, and somnolence may occur more commonly in women than in men. Edema is dose related and may be less frequent with concomitant use of an angiotensin-converting enzyme (ACE) inhibitor or angiotensin II receptor antagonist.
There are 39 severe adverse reactions.
More Frequent | Less Frequent |
---|---|
Arthralgia |
Muscle spasm Myalgia |
Rare/Very Rare |
---|
Abnormal hepatic function tests Acute myocardial infarction Anaphylaxis Angioedema Atrial fibrillation Bradycardia Cholestasis Depersonalization Depression Erythema multiforme Extrapyramidal disease Hepatic failure Hepatitis Hypotension Immune-mediated necrotizing myopathy Increased alanine transaminase Increased aspartate transaminase Interstitial lung disease Jaundice Leukopenia Muscle weakness Myasthenia gravis Myopathy Myositis Neck stiffness Pancreatitis Peripheral neuropathy Progressive angina pectoris Pulmonary edema Purpura Rhabdomyolysis Stevens-johnson syndrome Tendon rupture Thrombocytopenic disorder Toxic epidermal necrolysis Ventricular tachycardia |
There are 81 less severe adverse reactions.
More Frequent | Less Frequent |
---|---|
Acute abdominal pain Diarrhea Drowsy Dyspepsia Edema Headache disorder Nausea Pain Peripheral edema Pharyngitis Urinary tract infection |
Dizziness Fatigue Flushing Insomnia Musculoskeletal pain Nausea Palpitations Skin rash |
Rare/Very Rare |
---|
Abnormal sexual function Acute abdominal pain Acute cognitive impairment Anorexia Arthralgia Back pain Blurred vision Chest pain Chills Conjunctivitis Constipation Cramps Depression Diarrhea Dream disorder Drug-induced hot flash Dysgeusia Dysphagia Dyspnea Epistaxis Eructation Fatigue Fever Flatulence General weakness Gingival hyperplasia Gynecomastia Hyperglycemia Hyperhidrosis Hypoesthesia Increased urinary frequency Insomnia Joint stiffness Maculopapular rash Malaise Memory impairment Myalgia Nervousness Nightmares Nocturia Ocular pain Osteoarthritis Paresthesia Peripheral ischemia Peripheral neuropathy Polydipsia Pruritus of skin Skin rash Sterile pyuria Symptoms of anxiety Syncope Tachycardia Tinnitus Tremor Urticaria Vasculitis Vertigo Visual changes Vomiting Weight gain Weight loss Xerostomia |
The following precautions are available for CADUET (amlodipine besylate/atorvastatin calcium):
Safety and efficacy of atorvastatin have not been evaluated in prepubertal children or in children younger than 10 years of age with heterozygous familial hypercholesterolemia. In a randomized, double-blind, placebo-controlled study in boys and postmenarchal girls 10-17 years of age, the adverse effect profile of atorvastatin (10-20 mg daily for 26 weeks) generally was similar to that of placebo; dosages exceeding 20 mg daily have not been evaluated in this population. There were no substantial adverse effects on growth or sexual maturation in adolescent boys or on duration of menstrual cycle in girls.
If therapy with atorvastatin is considered, the manufacturer states that adolescent girls should be advised to use effective and appropriate contraceptive methods during therapy to reduce the likelihood of unintended pregnancy. The manufacturer states that atorvastatin dosages of up to 80 mg daily for 1 year have been evaluated in an uncontrolled study in 8 pediatric patients (6 years of age or older) with homozygous familial hypercholesterolemia. Safety and efficacy of atorvastatin in fixed combination with amlodipine (Caduet(R)) have not been established in pediatric patients.
Safety and efficacy of amlodipine in children younger than 6 years of age have not been established. Efficacy of amlodipine (2.5-5 mg daily) for the treatment of hypertension has been established in pediatric patients 6-17 years of age. Safety and efficacy of amlodipine in fixed combination with atorvastatin, benazepril, olmesartan (with or without hydrochlorothiazide), perindopril, telmisartan, or valsartan (with or without hydrochlorothiazide) have not been established in children.
Contraindicated
Severe Precaution
Management or Monitoring Precaution
Management or Monitoring Precaution
Management or Monitoring Precaution
If therapy with atorvastatin is considered, the manufacturer states that adolescent girls should be advised to use effective and appropriate contraceptive methods during therapy to reduce the likelihood of unintended pregnancy. The manufacturer states that atorvastatin dosages of up to 80 mg daily for 1 year have been evaluated in an uncontrolled study in 8 pediatric patients (6 years of age or older) with homozygous familial hypercholesterolemia. Safety and efficacy of atorvastatin in fixed combination with amlodipine (Caduet(R)) have not been established in pediatric patients.
Safety and efficacy of amlodipine in children younger than 6 years of age have not been established. Efficacy of amlodipine (2.5-5 mg daily) for the treatment of hypertension has been established in pediatric patients 6-17 years of age. Safety and efficacy of amlodipine in fixed combination with atorvastatin, benazepril, olmesartan (with or without hydrochlorothiazide), perindopril, telmisartan, or valsartan (with or without hydrochlorothiazide) have not been established in children.
Contraindicated
None |
Severe Precaution
None |
Management or Monitoring Precaution
Amlodipine, Levamlodipine | 1 Day – 6 Years | No safety and efficacy data for age < 6 years. |
Management or Monitoring Precaution
Atorvastatin | 1 Day – 10 Years | Not studied and no established safety and efficacy in age <10 years and in pre-menarche girls. |
Management or Monitoring Precaution
Atorvastatin | 10 Years – 18 Years | Manufacturer recommends contraception counseling to postmenarchal females. Monitor for myopathy and liver dysfunction. |
All statins were previously contraindicated in pregnant women because the fetal risk with these drugs was thought to outweigh any possible benefit. This determination was based on several factors including safety signals from animal data. In addition, congenital anomalies including severe CNS defects and unilateral limb deficiencies were reported in a case series of pregnant women who were exposed to a lipophilic statin during the first trimester.
Because statins decrease synthesis of cholesterol and possibly other products of the cholesterol biosynthetic pathway, there is also a concern that these drugs can potentially cause fetal harm. More recent data from case series and observational cohort studies have not shown evidence of an increased risk of major birth defects with statin use during pregnancy, and this was observed after controlling for potential confounders such as maternal age, diabetes mellitus, hypertension, obesity, and alcohol and tobacco use. The overall evidence from animal studies suggests limited potential for statins to cause malformations or other adverse fetal effects.
While an increased risk of miscarriage has been reported in pregnant women exposed to statins, it is not clear whether this effect is related to the drugs or to other confounding factors. FDA conducted a comprehensive review of all available clinical and nonclinical data of statin use in pregnant women and concluded that the totality of evidence suggests limited potential for statins to cause malformations and other adverse embryofetal effects. Because statins may prevent serious or potentially fatal cardiovascular events in certain high-risk patients who are pregnant, FDA has requested that the contraindication in pregnant women be removed from the prescribing information for all statins.
While FDA still advises that most pregnant patients discontinue statins because of the possibility of fetal harm, there may be some patients (e.g., those with homozygous familial hypercholesterolemia or established cardiovascular disease) in whom continued therapy may be beneficial; therefore, decisions should be individualized based on the patient's risks versus benefits. Patients who become pregnant or suspect that they are pregnant while receiving a statin should notify their clinician who can advise them on the appropriate course of action. Category C. (See Users Guide.)
Because statins decrease synthesis of cholesterol and possibly other products of the cholesterol biosynthetic pathway, there is also a concern that these drugs can potentially cause fetal harm. More recent data from case series and observational cohort studies have not shown evidence of an increased risk of major birth defects with statin use during pregnancy, and this was observed after controlling for potential confounders such as maternal age, diabetes mellitus, hypertension, obesity, and alcohol and tobacco use. The overall evidence from animal studies suggests limited potential for statins to cause malformations or other adverse fetal effects.
While an increased risk of miscarriage has been reported in pregnant women exposed to statins, it is not clear whether this effect is related to the drugs or to other confounding factors. FDA conducted a comprehensive review of all available clinical and nonclinical data of statin use in pregnant women and concluded that the totality of evidence suggests limited potential for statins to cause malformations and other adverse embryofetal effects. Because statins may prevent serious or potentially fatal cardiovascular events in certain high-risk patients who are pregnant, FDA has requested that the contraindication in pregnant women be removed from the prescribing information for all statins.
While FDA still advises that most pregnant patients discontinue statins because of the possibility of fetal harm, there may be some patients (e.g., those with homozygous familial hypercholesterolemia or established cardiovascular disease) in whom continued therapy may be beneficial; therefore, decisions should be individualized based on the patient's risks versus benefits. Patients who become pregnant or suspect that they are pregnant while receiving a statin should notify their clinician who can advise them on the appropriate course of action. Category C. (See Users Guide.)
Drug/Drug Class | Severity | Precaution Description | Pregnancy Category Description |
---|---|---|---|
Amlodipine | 2 | No fda rating but may have precautions or warnings; may have animal and/or human studies or pre or post marketing information. | |
Atorvastatin | D | Insuff human data avail;Theoretical risk based on mech of action | Positive evidence of human fetal risk based on investigation or marketing information but potential benefits may warrant use of drug in pregnant women despite potential risks. |
Atorvastatin is distributed into milk in rats. It is not known whether atorvastatin is distributed into human milk; however, the drug is probably distributed into human milk because a small amount of another statin is distributed into human milk. Because of the potential for serious adverse reactions from atorvastatin in nursing infants, the drug is contraindicated in nursing women.
Women who require atorvastatin therapy should not breast-feed their infants. Many patients can stop statin therapy temporarily until breast-feeding is complete; patients who require ongoing statin treatment should not breast-feed and should use alternatives such as infant formula. It is not known whether amlodipine is distributed into milk; the manufacturer recommends discontinuance of nursing if amlodipine is used.
Contraindicated
Absolute contraindication. (Human data usually available to support recommendations.) This drug should not be given to breast feeding mothers.
No Known Risk
No known risk. This drug has no known risks to nursing infants and does not adversely affect lactation.
Women who require atorvastatin therapy should not breast-feed their infants. Many patients can stop statin therapy temporarily until breast-feeding is complete; patients who require ongoing statin treatment should not breast-feed and should use alternatives such as infant formula. It is not known whether amlodipine is distributed into milk; the manufacturer recommends discontinuance of nursing if amlodipine is used.
Contraindicated
Absolute contraindication. (Human data usually available to support recommendations.) This drug should not be given to breast feeding mothers.
Drug Name | Excretion Potential | Effect on Infant | Notes |
---|---|---|---|
Atorvastatin | Unknown. It is unknown whether the drug is excreted in human breast milk. | It is not known whether this drug has an adverse effect on the nursing infant. (No data or inconclusive human data) | Mfr does not recommend; other hmg-coa reductase inhibitors excreted in milk |
No Known Risk
No known risk. This drug has no known risks to nursing infants and does not adversely affect lactation.
Drug Name | Excretion Potential | Effect on Infant | Notes |
---|---|---|---|
Amlodipine | Excreted.This drug is known to be excreted in human breast milk. | This drug has been shown not to have an adverse effect on the nursing infant. | Milk levels low; undetectable in breastfed infants; no adv eff reported |
Of the 39,828 patients receiving atorvastatin in clinical studies, 40% were 65 years of age or older, and 7% were 75 years of age or older. Although no overall differences in efficacy or safety were observed between geriatric and younger patients, and other clinical experience has not revealed age-related differences in response, the possibility that some geriatric patients may exhibit increased sensitivity to the drug cannot be ruled out. Data from a pharmacokinetic study indicate that peak plasma concentration and area under the plasma concentration-time curve (AUC) of atorvastatin were 40 or 30% higher, respectively, in geriatric individuals (65 years of age or older) compared with younger adults.
In addition, mean reductions in LDL-cholesterol concentrations appear to be higher in geriatric patients receiving any dose of atorvastatin compared with younger patients. Because patients older than 75 years of age may have a higher risk of adverse effects and lower adherence to therapy, the expected benefits versus adverse effects of statin therapy should be considered before initiating statin therapy in this population. Safety and efficacy of atorvastatin in fixed combination with amlodipine (Caduet(R)) have not been established in geriatric patients.
In geriatric patients, amlodipine clearance is decreased and AUC is increased by about 40-60%. Therefore, amlodipine dosage should be selected carefully, usually initiating therapy with dosages at the lower end of the recommended range. The greater frequency of decreased hepatic, renal, and/or cardiac function and of concomitant disease and drug therapy observed in the elderly also should be considered.
(See Geriatric Patients under Dosage and Administration: Special Populations.) Clinical studies of amlodipine did not include sufficient numbers of patients 65 years of age and older to determine whether geriatric patients respond differently than younger patients; however, other clinical experience has not revealed age-related differences in response or tolerance. No substantial differences in safety and efficacy relative to younger adults have been observed in geriatric patients receiving amlodipine in fixed combination with benazepril, olmesartan (with or without hydrochlorothiazide), telmisartan, or valsartan (with or without hydrochlorothiazide), but increased sensitivity cannot be ruled out. The manufacturer states that use of amlodipine in fixed combination with perindopril in geriatric patients is not recommended, as insufficient data are available to support dosage recommendations. The manufacturers state that safety and efficacy of amlodipine in fixed combination with atorvastatin have not been established in geriatric patients.
Precaution Exists
Geriatric management or monitoring precaution exists.
In addition, mean reductions in LDL-cholesterol concentrations appear to be higher in geriatric patients receiving any dose of atorvastatin compared with younger patients. Because patients older than 75 years of age may have a higher risk of adverse effects and lower adherence to therapy, the expected benefits versus adverse effects of statin therapy should be considered before initiating statin therapy in this population. Safety and efficacy of atorvastatin in fixed combination with amlodipine (Caduet(R)) have not been established in geriatric patients.
In geriatric patients, amlodipine clearance is decreased and AUC is increased by about 40-60%. Therefore, amlodipine dosage should be selected carefully, usually initiating therapy with dosages at the lower end of the recommended range. The greater frequency of decreased hepatic, renal, and/or cardiac function and of concomitant disease and drug therapy observed in the elderly also should be considered.
(See Geriatric Patients under Dosage and Administration: Special Populations.) Clinical studies of amlodipine did not include sufficient numbers of patients 65 years of age and older to determine whether geriatric patients respond differently than younger patients; however, other clinical experience has not revealed age-related differences in response or tolerance. No substantial differences in safety and efficacy relative to younger adults have been observed in geriatric patients receiving amlodipine in fixed combination with benazepril, olmesartan (with or without hydrochlorothiazide), telmisartan, or valsartan (with or without hydrochlorothiazide), but increased sensitivity cannot be ruled out. The manufacturer states that use of amlodipine in fixed combination with perindopril in geriatric patients is not recommended, as insufficient data are available to support dosage recommendations. The manufacturers state that safety and efficacy of amlodipine in fixed combination with atorvastatin have not been established in geriatric patients.
Precaution Exists
Geriatric management or monitoring precaution exists.
Drug Name | Narrative | REN | HEP | CARDIO | NEURO | PULM | ENDO |
---|---|---|---|---|---|---|---|
Amlodipine | General-Not recommended as first line therapy in the elderly. Cardiovascular-Start at 2.5 mg/day and slowly titrate upward. Peripheral edema may be common. Lower drug clearance may result in increased sensitivity to blood pressure lowering effects. Gastrointestinal-May cause or worsen pre-existing constipation. | N | Y | Y | N | N | N |
Atorvastatin | Musculoskeletal-Higher incidence of myopathy in patients greater than 65 years of age. Hepatic-Monitor LFTs for liver dysfunction. | Y | Y | N | N | N | N |
The following prioritized warning is available for CADUET (amlodipine besylate/atorvastatin calcium):
No warning message for this drug.
No warning message for this drug.
The following icd codes are available for CADUET (amlodipine besylate/atorvastatin calcium)'s list of indications:
Atherosclerotic cardiovascular disease | |
G45 | Transient cerebral ischemic attacks and related syndromes |
G45.8 | Other transient cerebral ischemic attacks and related syndromes |
G45.9 | Transient cerebral ischemic attack, unspecified |
I20 | Angina pectoris |
I20.0 | Unstable angina |
I20.2 | Refractory angina pectoris |
I20.9 | Angina pectoris, unspecified |
I21 | Acute myocardial infarction |
I21.0 | ST elevation (STEMi) myocardial infarction of anterior wall |
I21.01 | ST elevation (STEMi) myocardial infarction involving left main coronary artery |
I21.02 | ST elevation (STEMi) myocardial infarction involving left anterior descending coronary artery |
I21.09 | ST elevation (STEMi) myocardial infarction involving other coronary artery of anterior wall |
I21.1 | ST elevation (STEMi) myocardial infarction of inferior wall |
I21.11 | ST elevation (STEMi) myocardial infarction involving right coronary artery |
I21.19 | ST elevation (STEMi) myocardial infarction involving other coronary artery of inferior wall |
I21.2 | ST elevation (STEMi) myocardial infarction of other sites |
I21.21 | ST elevation (STEMi) myocardial infarction involving left circumflex coronary artery |
I21.29 | ST elevation (STEMi) myocardial infarction involving other sites |
I21.3 | ST elevation (STEMi) myocardial infarction of unspecified site |
I21.4 | Non-ST elevation (NSTEMi) myocardial infarction |
I22 | Subsequent ST elevation (STEMi) and non-ST elevation (NSTEMi) myocardial infarction |
I22.0 | Subsequent ST elevation (STEMi) myocardial infarction of anterior wall |
I22.1 | Subsequent ST elevation (STEMi) myocardial infarction of inferior wall |
I22.2 | Subsequent non-ST elevation (NSTEMi) myocardial infarction |
I22.8 | Subsequent ST elevation (STEMi) myocardial infarction of other sites |
I22.9 | Subsequent ST elevation (STEMi) myocardial infarction of unspecified site |
I23 | Certain current complications following ST elevation (STEMi) and non-ST elevation (NSTEMi) myocardial infarction (within the 28 day period) |
I23.0 | Hemopericardium as current complication following acute myocardial infarction |
I23.1 | Atrial septal defect as current complication following acute myocardial infarction |
I23.2 | Ventricular septal defect as current complication following acute myocardial infarction |
I23.3 | Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarction |
I23.4 | Rupture of chordae tendineae as current complication following acute myocardial infarction |
I23.5 | Rupture of papillary muscle as current complication following acute myocardial infarction |
I23.6 | Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction |
I23.7 | Postinfarction angina |
I23.8 | Other current complications following acute myocardial infarction |
I24.0 | Acute coronary thrombosis not resulting in myocardial infarction |
I25.1 | Atherosclerotic heart disease of native coronary artery |
I25.10 | Atherosclerotic heart disease of native coronary artery without angina pectoris |
I25.11 | Atherosclerotic heart disease of native coronary artery with angina pectoris |
I25.110 | Atherosclerotic heart disease of native coronary artery with unstable angina pectoris |
I25.111 | Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm |
I25.112 | Atherosclerotic heart disease of native coronary artery with refractory angina pectoris |
I25.118 | Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris |
I25.119 | Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris |
I25.2 | Old myocardial infarction |
I25.7 | Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris |
I25.70 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris |
I25.700 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris |
I25.701 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm |
I25.702 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris |
I25.708 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris |
I25.709 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris |
I25.71 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris |
I25.710 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris |
I25.711 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.712 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris |
I25.718 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris |
I25.719 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris |
I25.72 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris |
I25.720 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris |
I25.721 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.722 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris |
I25.728 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris |
I25.729 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris |
I25.73 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris |
I25.730 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris |
I25.731 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.732 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris |
I25.738 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris |
I25.739 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris |
I25.75 | Atherosclerosis of native coronary artery of transplanted heart with angina pectoris |
I25.750 | Atherosclerosis of native coronary artery of transplanted heart with unstable angina |
I25.751 | Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm |
I25.752 | Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris |
I25.758 | Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris |
I25.759 | Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris |
I25.76 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris |
I25.760 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina |
I25.761 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm |
I25.762 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris |
I25.768 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris |
I25.769 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris |
I25.79 | Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris |
I25.790 | Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris |
I25.791 | Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.792 | Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris |
I25.798 | Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris |
I25.799 | Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris |
I25.81 | Atherosclerosis of other coronary vessels without angina pectoris |
I25.810 | Atherosclerosis of coronary artery bypass graft(s) without angina pectoris |
I25.811 | Atherosclerosis of native coronary artery of transplanted heart without angina pectoris |
I25.812 | Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris |
I25.83 | Coronary atherosclerosis due to lipid rich plaque |
I25.84 | Coronary atherosclerosis due to calcified coronary lesion |
I63 | Cerebral infarction |
I63.0 | Cerebral infarction due to thrombosis of precerebral arteries |
I63.00 | Cerebral infarction due to thrombosis of unspecified precerebral artery |
I63.01 | Cerebral infarction due to thrombosis of vertebral artery |
I63.011 | Cerebral infarction due to thrombosis of right vertebral artery |
I63.012 | Cerebral infarction due to thrombosis of left vertebral artery |
I63.013 | Cerebral infarction due to thrombosis of bilateral vertebral arteries |
I63.019 | Cerebral infarction due to thrombosis of unspecified vertebral artery |
I63.02 | Cerebral infarction due to thrombosis of basilar artery |
I63.03 | Cerebral infarction due to thrombosis of carotid artery |
I63.031 | Cerebral infarction due to thrombosis of right carotid artery |
I63.032 | Cerebral infarction due to thrombosis of left carotid artery |
I63.033 | Cerebral infarction due to thrombosis of bilateral carotid arteries |
I63.039 | Cerebral infarction due to thrombosis of unspecified carotid artery |
I63.09 | Cerebral infarction due to thrombosis of other precerebral artery |
I63.11 | Cerebral infarction due to embolism of vertebral artery |
I63.3 | Cerebral infarction due to thrombosis of cerebral arteries |
I63.30 | Cerebral infarction due to thrombosis of unspecified cerebral artery |
I63.31 | Cerebral infarction due to thrombosis of middle cerebral artery |
I63.311 | Cerebral infarction due to thrombosis of right middle cerebral artery |
I63.312 | Cerebral infarction due to thrombosis of left middle cerebral artery |
I63.313 | Cerebral infarction due to thrombosis of bilateral middle cerebral arteries |
I63.319 | Cerebral infarction due to thrombosis of unspecified middle cerebral artery |
I63.32 | Cerebral infarction due to thrombosis of anterior cerebral artery |
I63.321 | Cerebral infarction due to thrombosis of right anterior cerebral artery |
I63.322 | Cerebral infarction due to thrombosis of left anterior cerebral artery |
I63.323 | Cerebral infarction due to thrombosis of bilateral anterior cerebral arteries |
I63.329 | Cerebral infarction due to thrombosis of unspecified anterior cerebral artery |
I63.33 | Cerebral infarction due to thrombosis of posterior cerebral artery |
I63.331 | Cerebral infarction due to thrombosis of right posterior cerebral artery |
I63.332 | Cerebral infarction due to thrombosis of left posterior cerebral artery |
I63.333 | Cerebral infarction due to thrombosis of bilateral posterior cerebral arteries |
I63.339 | Cerebral infarction due to thrombosis of unspecified posterior cerebral artery |
I63.34 | Cerebral infarction due to thrombosis of cerebellar artery |
I63.341 | Cerebral infarction due to thrombosis of right cerebellar artery |
I63.342 | Cerebral infarction due to thrombosis of left cerebellar artery |
I63.343 | Cerebral infarction due to thrombosis of bilateral cerebellar arteries |
I63.349 | Cerebral infarction due to thrombosis of unspecified cerebellar artery |
I63.39 | Cerebral infarction due to thrombosis of other cerebral artery |
I63.8 | Other cerebral infarction |
I63.9 | Cerebral infarction, unspecified |
I67.2 | Cerebral atherosclerosis |
I70 | Atherosclerosis |
I70.0 | Atherosclerosis of aorta |
I70.1 | Atherosclerosis of renal artery |
I70.2 | Atherosclerosis of native arteries of the extremities |
I70.20 | Unspecified atherosclerosis of native arteries of extremities |
I70.201 | Unspecified atherosclerosis of native arteries of extremities, right leg |
I70.202 | Unspecified atherosclerosis of native arteries of extremities, left leg |
I70.203 | Unspecified atherosclerosis of native arteries of extremities, bilateral legs |
I70.208 | Unspecified atherosclerosis of native arteries of extremities, other extremity |
I70.209 | Unspecified atherosclerosis of native arteries of extremities, unspecified extremity |
I70.21 | Atherosclerosis of native arteries of extremities with intermittent claudication |
I70.211 | Atherosclerosis of native arteries of extremities with intermittent claudication, right leg |
I70.212 | Atherosclerosis of native arteries of extremities with intermittent claudication, left leg |
I70.213 | Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs |
I70.218 | Atherosclerosis of native arteries of extremities with intermittent claudication, other extremity |
I70.219 | Atherosclerosis of native arteries of extremities with intermittent claudication, unspecified extremity |
I70.22 | Atherosclerosis of native arteries of extremities with rest pain |
I70.221 | Atherosclerosis of native arteries of extremities with rest pain, right leg |
I70.222 | Atherosclerosis of native arteries of extremities with rest pain, left leg |
I70.223 | Atherosclerosis of native arteries of extremities with rest pain, bilateral legs |
I70.228 | Atherosclerosis of native arteries of extremities with rest pain, other extremity |
I70.229 | Atherosclerosis of native arteries of extremities with rest pain, unspecified extremity |
I70.23 | Atherosclerosis of native arteries of right leg with ulceration |
I70.231 | Atherosclerosis of native arteries of right leg with ulceration of thigh |
I70.232 | Atherosclerosis of native arteries of right leg with ulceration of calf |
I70.233 | Atherosclerosis of native arteries of right leg with ulceration of ankle |
I70.234 | Atherosclerosis of native arteries of right leg with ulceration of heel and midfoot |
I70.235 | Atherosclerosis of native arteries of right leg with ulceration of other part of foot |
I70.238 | Atherosclerosis of native arteries of right leg with ulceration of other part of lower leg |
I70.239 | Atherosclerosis of native arteries of right leg with ulceration of unspecified site |
I70.24 | Atherosclerosis of native arteries of left leg with ulceration |
I70.241 | Atherosclerosis of native arteries of left leg with ulceration of thigh |
I70.242 | Atherosclerosis of native arteries of left leg with ulceration of calf |
I70.243 | Atherosclerosis of native arteries of left leg with ulceration of ankle |
I70.244 | Atherosclerosis of native arteries of left leg with ulceration of heel and midfoot |
I70.245 | Atherosclerosis of native arteries of left leg with ulceration of other part of foot |
I70.248 | Atherosclerosis of native arteries of left leg with ulceration of other part of lower leg |
I70.249 | Atherosclerosis of native arteries of left leg with ulceration of unspecified site |
I70.25 | Atherosclerosis of native arteries of other extremities with ulceration |
I70.26 | Atherosclerosis of native arteries of extremities with gangrene |
I70.261 | Atherosclerosis of native arteries of extremities with gangrene, right leg |
I70.262 | Atherosclerosis of native arteries of extremities with gangrene, left leg |
I70.263 | Atherosclerosis of native arteries of extremities with gangrene, bilateral legs |
I70.268 | Atherosclerosis of native arteries of extremities with gangrene, other extremity |
I70.269 | Atherosclerosis of native arteries of extremities with gangrene, unspecified extremity |
I70.29 | Other atherosclerosis of native arteries of extremities |
I70.291 | Other atherosclerosis of native arteries of extremities, right leg |
I70.292 | Other atherosclerosis of native arteries of extremities, left leg |
I70.293 | Other atherosclerosis of native arteries of extremities, bilateral legs |
I70.298 | Other atherosclerosis of native arteries of extremities, other extremity |
I70.299 | Other atherosclerosis of native arteries of extremities, unspecified extremity |
I70.3 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities |
I70.30 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities |
I70.301 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg |
I70.302 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg |
I70.303 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, bilateral legs |
I70.308 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, other extremity |
I70.309 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, unspecified extremity |
I70.31 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication |
I70.311 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, right leg |
I70.312 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, left leg |
I70.313 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
I70.318 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, other extremity |
I70.319 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, unspecified extremity |
I70.32 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain |
I70.321 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, right leg |
I70.322 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, left leg |
I70.323 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, bilateral legs |
I70.328 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, other extremity |
I70.329 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, unspecified extremity |
I70.33 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration |
I70.331 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of thigh |
I70.332 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of calf |
I70.333 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of ankle |
I70.334 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of heel and midfoot |
I70.335 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of other part of foot |
I70.338 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of other part of lower leg |
I70.339 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of unspecified site |
I70.34 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration |
I70.341 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of thigh |
I70.342 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of calf |
I70.343 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of ankle |
I70.344 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of heel and midfoot |
I70.345 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of other part of foot |
I70.348 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of other part of lower leg |
I70.349 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of unspecified site |
I70.35 | Atherosclerosis of unspecified type of bypass graft(s) of other extremity with ulceration |
I70.36 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene |
I70.361 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, right leg |
I70.362 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, left leg |
I70.363 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, bilateral legs |
I70.368 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, other extremity |
I70.369 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, unspecified extremity |
I70.39 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities |
I70.391 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg |
I70.392 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg |
I70.393 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, bilateral legs |
I70.398 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, other extremity |
I70.399 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, unspecified extremity |
I70.4 | Atherosclerosis of autologous vein bypass graft(s) of the extremities |
I70.40 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities |
I70.401 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, right leg |
I70.402 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, left leg |
I70.403 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, bilateral legs |
I70.408 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity |
I70.409 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, unspecified extremity |
I70.41 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication |
I70.411 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, right leg |
I70.412 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, left leg |
I70.413 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
I70.418 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, other extremity |
I70.419 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, unspecified extremity |
I70.42 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain |
I70.421 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, right leg |
I70.422 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, left leg |
I70.423 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, bilateral legs |
I70.428 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, other extremity |
I70.429 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, unspecified extremity |
I70.43 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration |
I70.431 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of thigh |
I70.432 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of calf |
I70.433 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of ankle |
I70.434 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of heel and midfoot |
I70.435 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of other part of foot |
I70.438 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of other part of lower leg |
I70.439 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of unspecified site |
I70.44 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration |
I70.441 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of thigh |
I70.442 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of calf |
I70.443 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of ankle |
I70.444 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of heel and midfoot |
I70.445 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of other part of foot |
I70.448 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of other part of lower leg |
I70.449 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of unspecified site |
I70.45 | Atherosclerosis of autologous vein bypass graft(s) of other extremity with ulceration |
I70.46 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene |
I70.461 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, right leg |
I70.462 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, left leg |
I70.463 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, bilateral legs |
I70.468 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, other extremity |
I70.469 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, unspecified extremity |
I70.49 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities |
I70.491 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, right leg |
I70.492 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, left leg |
I70.493 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, bilateral legs |
I70.498 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity |
I70.499 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, unspecified extremity |
I70.5 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities |
I70.50 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities |
I70.501 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, right leg |
I70.502 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, left leg |
I70.503 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, bilateral legs |
I70.508 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, other extremity |
I70.509 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, unspecified extremity |
I70.51 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities intermittent claudication |
I70.511 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, right leg |
I70.512 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, left leg |
I70.513 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
I70.518 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, other extremity |
I70.519 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, unspecified extremity |
I70.52 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain |
I70.521 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, right leg |
I70.522 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, left leg |
I70.523 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, bilateral legs |
I70.528 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, other extremity |
I70.529 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, unspecified extremity |
I70.53 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration |
I70.531 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of thigh |
I70.532 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of calf |
I70.533 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of ankle |
I70.534 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of heel and midfoot |
I70.535 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of other part of foot |
I70.538 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of other part of lower leg |
I70.539 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of unspecified site |
I70.54 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration |
I70.541 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of thigh |
I70.542 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of calf |
I70.543 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of ankle |
I70.544 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of heel and midfoot |
I70.545 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of other part of foot |
I70.548 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of other part of lower leg |
I70.549 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of unspecified site |
I70.55 | Atherosclerosis of nonautologous biological bypass graft(s) of other extremity with ulceration |
I70.56 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene |
I70.561 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, right leg |
I70.562 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, left leg |
I70.563 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, bilateral legs |
I70.568 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, other extremity |
I70.569 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, unspecified extremity |
I70.59 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities |
I70.591 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, right leg |
I70.592 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, left leg |
I70.593 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, bilateral legs |
I70.598 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, other extremity |
I70.599 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, unspecified extremity |
I70.6 | Atherosclerosis of nonbiological bypass graft(s) of the extremities |
I70.60 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities |
I70.601 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, right leg |
I70.602 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg |
I70.603 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, bilateral legs |
I70.608 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, other extremity |
I70.609 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, unspecified extremity |
I70.61 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication |
I70.611 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, right leg |
I70.612 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, left leg |
I70.613 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
I70.618 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, other extremity |
I70.619 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, unspecified extremity |
I70.62 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain |
I70.621 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, right leg |
I70.622 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, left leg |
I70.623 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, bilateral legs |
I70.628 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, other extremity |
I70.629 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, unspecified extremity |
I70.63 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration |
I70.631 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of thigh |
I70.632 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of calf |
I70.633 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of ankle |
I70.634 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of heel and midfoot |
I70.635 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of foot |
I70.638 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of lower leg |
I70.639 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of unspecified site |
I70.64 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration |
I70.641 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of thigh |
I70.642 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of calf |
I70.643 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of ankle |
I70.644 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of heel and midfoot |
I70.645 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of other part of foot |
I70.648 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of other part of lower leg |
I70.649 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of unspecified site |
I70.65 | Atherosclerosis of nonbiological bypass graft(s) of other extremity with ulceration |
I70.66 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene |
I70.661 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, right leg |
I70.662 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, left leg |
I70.663 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, bilateral legs |
I70.668 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, other extremity |
I70.669 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, unspecified extremity |
I70.69 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities |
I70.691 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, right leg |
I70.692 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg |
I70.693 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, bilateral legs |
I70.698 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, other extremity |
I70.699 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, unspecified extremity |
I70.7 | Atherosclerosis of other type of bypass graft(s) of the extremities |
I70.70 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities |
I70.701 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, right leg |
I70.702 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, left leg |
I70.703 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, bilateral legs |
I70.708 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, other extremity |
I70.709 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity |
I70.71 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication |
I70.711 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, right leg |
I70.712 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, left leg |
I70.713 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
I70.718 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, other extremity |
I70.719 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, unspecified extremity |
I70.72 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain |
I70.721 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, right leg |
I70.722 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, left leg |
I70.723 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs |
I70.728 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, other extremity |
I70.729 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, unspecified extremity |
I70.73 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration |
I70.731 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of thigh |
I70.732 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of calf |
I70.733 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of ankle |
I70.734 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of heel and midfoot |
I70.735 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of other part of foot |
I70.738 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of other part of lower leg |
I70.739 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of unspecified site |
I70.74 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration |
I70.741 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of thigh |
I70.742 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of calf |
I70.743 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of ankle |
I70.744 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of heel and midfoot |
I70.745 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of other part of foot |
I70.748 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of other part of lower leg |
I70.749 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of unspecified site |
I70.75 | Atherosclerosis of other type of bypass graft(s) of other extremity with ulceration |
I70.76 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene |
I70.761 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, right leg |
I70.762 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, left leg |
I70.763 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, bilateral legs |
I70.768 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, other extremity |
I70.769 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, unspecified extremity |
I70.79 | Other atherosclerosis of other type of bypass graft(s) of the extremities |
I70.791 | Other atherosclerosis of other type of bypass graft(s) of the extremities, right leg |
I70.792 | Other atherosclerosis of other type of bypass graft(s) of the extremities, left leg |
I70.793 | Other atherosclerosis of other type of bypass graft(s) of the extremities, bilateral legs |
I70.798 | Other atherosclerosis of other type of bypass graft(s) of the extremities, other extremity |
I70.799 | Other atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity |
I70.8 | Atherosclerosis of other arteries |
I70.9 | Other and unspecified atherosclerosis |
I70.90 | Unspecified atherosclerosis |
I70.91 | Generalized atherosclerosis |
I70.92 | Chronic total occlusion of artery of the extremities |
Z95.1 | Presence of aortocoronary bypass graft |
Z95.820 | Peripheral vascular angioplasty status with implants and grafts |
Z98.61 | Coronary angioplasty status |
Z98.62 | Peripheral vascular angioplasty status |
Heterozygous familial hypercholesterolemia | |
E78.01 | Familial hypercholesterolemia |
Homozygous familial hypercholesterolemia | |
E78.01 | Familial hypercholesterolemia |
Hypercholesterolemia | |
E78.0 | Pure hypercholesterolemia |
E78.00 | Pure hypercholesterolemia, unspecified |
E78.01 | Familial hypercholesterolemia |
Hypertension | |
I10 | Essential (primary) hypertension |
I11 | Hypertensive heart disease |
I11.0 | Hypertensive heart disease with heart failure |
I11.9 | Hypertensive heart disease without heart failure |
I12 | Hypertensive chronic kidney disease |
I12.0 | Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease |
I12.9 | Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease |
I13 | Hypertensive heart and chronic kidney disease |
I13.0 | Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease |
I13.1 | Hypertensive heart and chronic kidney disease without heart failure |
I13.10 | Hypertensive heart and chronic kidney disease without heart failure, with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease |
I13.11 | Hypertensive heart and chronic kidney disease without heart failure, with stage 5 chronic kidney disease, or end stage renal disease |
I13.2 | Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal disease |
I15.1 | Hypertension secondary to other renal disorders |
Hypertriglyceridemia | |
E78.1 | Pure hyperglyceridemia |
E78.2 | Mixed hyperlipidemia |
Mixed hyperlipidemia | |
E78.2 | Mixed hyperlipidemia |
Prevention of anginal pain from vasospastic angina | |
I20.1 | Angina pectoris with documented spasm |
I25.111 | Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm |
I25.701 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm |
I25.711 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.721 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.731 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.751 | Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm |
I25.761 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm |
I25.791 | Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm |
Prevention of anginal pain in coronary artery disease | |
I20.2 | Refractory angina pectoris |
I20.81 | Angina pectoris with coronary microvascular dysfunction |
I20.89 | Other forms of angina pectoris |
I20.9 | Angina pectoris, unspecified |
I25.112 | Atherosclerotic heart disease of native coronary artery with refractory angina pectoris |
I25.118 | Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris |
I25.119 | Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris |
I25.702 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris |
I25.708 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris |
I25.709 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris |
I25.712 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris |
I25.718 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris |
I25.719 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris |
I25.722 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris |
I25.728 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris |
I25.729 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris |
I25.732 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris |
I25.738 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris |
I25.739 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris |
I25.752 | Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris |
I25.758 | Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris |
I25.759 | Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris |
I25.762 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris |
I25.768 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris |
I25.769 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris |
I25.792 | Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris |
I25.798 | Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris |
I25.799 | Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris |
Primary dysbetalipoproteinemia | |
E78.2 | Mixed hyperlipidemia |
Treatment to slow progression of coronary artery disease | |
I25 | Chronic ischemic heart disease |
I25.1 | Atherosclerotic heart disease of native coronary artery |
I25.10 | Atherosclerotic heart disease of native coronary artery without angina pectoris |
I25.11 | Atherosclerotic heart disease of native coronary artery with angina pectoris |
I25.110 | Atherosclerotic heart disease of native coronary artery with unstable angina pectoris |
I25.111 | Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm |
I25.112 | Atherosclerotic heart disease of native coronary artery with refractory angina pectoris |
I25.118 | Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris |
I25.119 | Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris |
I25.7 | Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris |
I25.70 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris |
I25.700 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris |
I25.701 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm |
I25.702 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris |
I25.708 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris |
I25.709 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris |
I25.71 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris |
I25.710 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris |
I25.711 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.712 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris |
I25.718 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris |
I25.719 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris |
I25.72 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris |
I25.720 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris |
I25.721 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.722 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris |
I25.728 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris |
I25.729 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris |
I25.73 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris |
I25.730 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris |
I25.731 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.732 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris |
I25.738 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris |
I25.739 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris |
I25.75 | Atherosclerosis of native coronary artery of transplanted heart with angina pectoris |
I25.750 | Atherosclerosis of native coronary artery of transplanted heart with unstable angina |
I25.751 | Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm |
I25.752 | Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris |
I25.758 | Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris |
I25.759 | Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris |
I25.76 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris |
I25.760 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina |
I25.761 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm |
I25.762 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris |
I25.768 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris |
I25.769 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris |
I25.79 | Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris |
I25.790 | Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris |
I25.791 | Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm |
I25.792 | Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris |
I25.798 | Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris |
I25.799 | Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris |
I25.8 | Other forms of chronic ischemic heart disease |
I25.81 | Atherosclerosis of other coronary vessels without angina pectoris |
I25.810 | Atherosclerosis of coronary artery bypass graft(s) without angina pectoris |
I25.811 | Atherosclerosis of native coronary artery of transplanted heart without angina pectoris |
I25.812 | Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris |
I25.82 | Chronic total occlusion of coronary artery |
I25.83 | Coronary atherosclerosis due to lipid rich plaque |
I25.84 | Coronary atherosclerosis due to calcified coronary lesion |
I25.85 | Chronic coronary microvascular dysfunction |
I25.89 | Other forms of chronic ischemic heart disease |
I25.9 | Chronic ischemic heart disease, unspecified |
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