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Drug overview for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs):
Generic name: ETHYL ALCOHOL/HERBAL DRUGS
Drug class: Iron
Therapeutic class: Electrolyte Balance-Nutritional Products
Ferrous fumarate, ferrous gluconate, ferrous sulfate, carbonyl iron, and polysaccharide-iron complex are iron preparations that are commercially available in the US for oral administration in the prevention and treatment of iron deficiency.
No enhanced Uses information available for this drug.
Generic name: ETHYL ALCOHOL/HERBAL DRUGS
Drug class: Iron
Therapeutic class: Electrolyte Balance-Nutritional Products
Ferrous fumarate, ferrous gluconate, ferrous sulfate, carbonyl iron, and polysaccharide-iron complex are iron preparations that are commercially available in the US for oral administration in the prevention and treatment of iron deficiency.
No enhanced Uses information available for this drug.
DRUG IMAGES
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The following indications for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs) have been approved by the FDA:
Indications:
None.
Professional Synonyms:
None.
Indications:
None.
Professional Synonyms:
None.
The following dosing information is available for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs):
Dosage of oral iron preparations should be expressed in terms of elemental iron. The elemental iron content of the various preparations is approximately:
Table 1.
Drug Elemental Iron ferric pyrophosphate 120 mg/g ferrous gluconate 120 mg/g ferrous sulfate 200 mg/g ferrous sulfate, dried 300 mg/g ferrous fumarate 330 mg/g ferrous carbonate, anhydrous 480 mg/g carbonyl iron 1000 mg/g
carbonyl iron is elemental iron, not an iron salt.
Table 1.
Drug Elemental Iron ferric pyrophosphate 120 mg/g ferrous gluconate 120 mg/g ferrous sulfate 200 mg/g ferrous sulfate, dried 300 mg/g ferrous fumarate 330 mg/g ferrous carbonate, anhydrous 480 mg/g carbonyl iron 1000 mg/g
carbonyl iron is elemental iron, not an iron salt.
Oral iron preparations generally should be taken between meals (e.g., 1 hour before or 2 hours after a meal) for maximum absorption but may be taken with or after meals, if necessary, to minimize adverse GI effects. Patients who have difficulty tolerating oral iron supplements also may benefit from smaller, more frequent doses, starting with a lower dose and increasing slowly to the target dose, trying a different form or preparation, or taking the supplement at bedtime.
No dosing information available.
No generic dosing information available.
The following drug interaction information is available for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs):
There are 4 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 |
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Sodium Oxybate/Sedative Hypnotics; Alcohol 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: Oxybate may be associated with respiratory depression. As oxybate is taken at bedtime, concurrent use with alcohol or hypnotics may increase the risk for respiratory depression or loss of consciousness.(1-3) Primidone is metabolized to phenobarbital. CLINICAL EFFECTS: Concurrent use of sodium oxybate and sedative hypnotics or alcohol may further increase the risk for respiratory depression and profound sedation or coma.(1,2) Fatalities have been reported.(3) PREDISPOSING FACTORS: Based upon FDA evaluation of deaths in patients taking sodium oxybate, risk factors may include: use of multiple drugs which depress the CNS, more rapid than recommended oxybate dose titration, exceeding the maximum recommended oxybate dose, and prescribing for unapproved uses such as fibromyalgia, insomnia or migraine. Note that in oxybate clinical trials for narcolepsy 78% - 85% of patients were also receiving concomitant CNS stimulants.(1-3) PATIENT MANAGEMENT: The FDA states that sodium oxybate is contraindicated in patients also taking hypnotics or alcohol.(1,2) Significant quantities of alcohol may be present in medicinal products. Alcohol is is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (4): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: The FDA evaluated sodium oxybate postmarket fatal adverse event reports from the FDA Adverse Event Reporting System(AERS)and from the manufacturer. Although report documentation was not always optimal or complete, useful information was obtained. Factors which may have contributed to fatal outcome: concomitant use of one or more drugs which depress the CNS, more rapid than recommended upward dose titration, exceeding the maximum recommended oxybate dose, and prescribing for unapproved uses such as fibromyalgia, insomnia or migraine. Many deaths occurred in patients with serious psychiatric disorders such as depression and substance abuse. Other concomitant diseases may have also contributed to respiratory and CNS depressant effects of oxybate.(3) |
LUMRYZ, LUMRYZ STARTER PACK, SODIUM OXYBATE, XYREM, XYWAV |
Ethyl Alcohol/Disulfiram Derivatives 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: Disulfiram alters the intermediary metabolism of alcohol. Acetaldehyde is produced as a result of an initial metabolism of alcohol in the liver. Acetaldehyde is normally further oxidized by aldehyde dehydrogenase. However, this step is slowed by disulfiram and results in elevated acetaldehyde levels in the blood, which produces the undesirable effects.(1-2) CLINICAL EFFECTS: Patients taking preparations that contain alcohol or using topical preparations that contain alcohol while taking disulfiram or agents related to it may experience throbbing in the head and neck, palpitations, tachycardia, hypotension, sweating, nausea, and vomiting.(3) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer recommends that disulfiram never be administered to a patient who is in a state of alcohol intoxication. Patients should be advised that even small amounts of alcohol may trigger the reaction. U.S. manufacturer states that taking any alcohol containing products during the course of therapy with disulfiram or its derivatives is contraindicated.(2) Patients should be informed about unsuspected sources of alcohol such as elixirs and topical preparations.(2) Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (13): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Disulfiram is used therapeutically in the treatment of alcoholism. The quantity of alcohol required to elicit the interaction varies with individuals.(2,4-5) Consumption of even small doses (e.g., 15 ml may lead to this interaction; therefore, concomitant administration should be avoided. Patients have suffered from this interaction from ingest-ing cough mixtures(6) and using topical preparations such as aftershave lotions(7) and antipsoriatic preparations(8) that contained alcohol. The duration of this interaction varies from 30 to 60 minutes to several hours, depending on the amount of alcohol consumed.(2,9) An overdose of disulfiram and alcohol may have caused a case of severe polyneuritis in one report,(10) and another report attributes the death of a patient to this interaction.(11) This interaction has also been reported in patients who came in contact with other organic solvents (e.g., paint, "mineral spirits") through inhalation; therefore, patients should be advised of this potential hazard as well.(12) |
DISULFIRAM |
Selected Extended-Release Opioids/Alcohol 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: Use of alcohol may result in an acceleration of opioid release from Avinza (morphine) extended-release capsules,(1) Opana (oxymorphone) extended-release tablets,(2) Nucynta (tapentadol) extended-release tablets,(3) and Zohydro (hydrocodone) extended-release capsules.(4) CLINICAL EFFECTS: Use of alcohol may result in the rapid release and absorption of a potentially fatal dose of morphine,(1) oxymorphone,(2) tapentadol,(3) or hydrocodone.(4) Toxic effects of rapid release include profound sedation, respiratory depression, coma, and/or death. PREDISPOSING FACTORS: The increased release may be alcohol concentration-dependent.(1,2) PATIENT MANAGEMENT: The US manufacturer of Avinza brand of morphine extended-release capsules states that patients should not consume alcohol and must not use prescription or non-prescription medications that contain alcohol while on Avinza.(1) The US manufacturer of Opana ER brand of oxymorphone extended-release tablets states that patients should not consume alcohol and must not use prescription or non-prescription medications that contain alcohol while on Opana ER.(2) The US manufacturer of Nucynta ER brand of tapentadol extended-release tablets states that patients should not consume alcohol and must not use prescription or non-prescription medications that contain alcohol while on Nucynta ER.(2) The US manufacturer of Zohydro ER brand of hydrocodone extended-release capsules states that patients must not consume alcohol or any prescription or non-prescription products containing alcohol while taking Zohydro ER.(4) Discuss naloxone with all patients when prescribing or renewing an opioid analgesic or medicine to treat opioid use disorder (OUD). Consider prescribing naloxone to patients prescribed medicines to treat OUD or opioid analgesics (such as those taking CNS depressants) who are at increased risk of opioid overdose and when a patient has household members/close contacts at risk for accidental overdose.(5) DISCUSSION: In vitro studies showed that mixing Avinza capsules with 900 ml of either a 20% or 40% ethanol solution resulted in an alcohol-concentration dependent increase in release of morphine. This acceleration of release may result in rapid release of the total morphine dose in vivo, which could result in the absorption of a fatal dose of morphine.(1) In an in vivo study in healthy subjects, administration of Opana ER (oxymorphone) with 240 ml of 40% alcohol, the area-under-curve (AUC) of oxymorphone increased 13%. There was no effect on oxymorphone AUC with 20% or 4% alcohol. The maximum concentration (Cmax) of oxymorphone increased by 70% (range -50% to +270%), 31% (range up to 260%), 7% (range up to 110%) with concurrent ingestion of 40%, 20% and 4% alcohol.(2) In an in vivo study in healthy subjects, administration of Nucynta ER (100 mg tapentadol) with 240 ml of 40% alcohol, the Cmax of tapentadol increased 48% (range 99% to 4.38-fold) and the AUC increased 17%. Administration of Nucynta ER (250 mg tapentadol) with 240 ml of 40% alcohol, the Cmax of tapentadol increased 28% (range 90% to 2.67-fold) and the AUC increased 16%.(3) In an in vivo study in healthy subjects Zohydro ER (hydrocodone) 50 mg was given on an empty stomach with a 240 mL solution of 40% alcohol/orange juice. The average peak hydrocodone maximum concentration (Cmax) increased by 2.4-fold and systemic absorption was increased by an average of 1.2-fold.(4) |
HYDROCODONE BITARTRATE ER, MORPHINE SULFATE ER, NUCYNTA ER, OXYMORPHONE HCL ER |
Ethyl Alcohol/Nifurtimox 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: Nifurtimox may increase the risk of the disulfiram-like reaction. In vitro studies of similar agents including other nitrofurans and nitroheterocyclic compounds demonstrated inhibition of aldehyde dehydrogenase and other alcohol-oxidizing enzymes.(1) This results in the accumulation of acetaldehyde, which is responsible for the disulfiram-like reaction. CLINICAL EFFECTS: Concurrent use of nifurtimox with alcohol may contribute to a disulfiram-type reaction resulting in symptoms of hypotension, tachycardia, nausea, sweating, facial flushing, headache, and vomiting.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients should be advised that concurrent use of nifurtimox and alcohol is contraindicated. Caution patients of the possible effects that may result from ingestion or application of products that contain alcohol while taking nifurtimox.(1) Patients should be informed about unsuspected sources of alcohol such as elixirs and topical preparations. Caution is also warranted when using intravenous preparations containing alcohol solvents in patients receiving nifurtimox. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (2): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Clinical studies have not been conducted. Concomitant use of nifurtimox with alcohol may increase the incidence and severity of undesirable effects similar to other nitrofurans and nitroheterocyclic compounds.(1) |
LAMPIT |
There are 16 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 |
---|---|
Levodopa/Iron Salts, Oral SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Iron salts appear to decrease the absorption of levodopa by chelate formation. CLINICAL EFFECTS: The therapeutic effect of levodopa may be decreased. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Separate the administration times of levodopa and iron by as much as possible. Observe the patient for a decrease in clinical response and adjust the dose of levodopa as necessary. DISCUSSION: Ferrous sulfate administration produced decreases in the serum concentration of levodopa and area-under-curve (AUC). Patients receiving levodopa plus carbidopa also experienced a reduction in the serum concentration and AUC for carbidopa during concurrent administration of ferrous sulfate. In addition, a loss in therapeutic response was demonstrated. |
CARBIDOPA-LEVODOPA, CARBIDOPA-LEVODOPA ER, CREXONT, DHIVY, DUOPA, INBRIJA, LEVODOPA, RYTARY, SINEMET |
Ethyl Alcohol/Fexinidazole;Metronidazole;Tinidazole SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: In vitro studies show that metronidazole produces an inhibition of aldehyde dehydrogenase and other alcohol-oxidizing enzymes.(1-5) This results in the accumulation of acetaldehyde, which is responsible for the disulfiram-like reaction. A similar process may occur with fexinidazole(6) and tinidazole.(7) CLINICAL EFFECTS: Concurrent use of oral metronidazole with alcohol has been associated with a disulfiram-type reaction resulting in symptoms of hypotension, tachycardia, nausea, sweating, facial flushing, headache, and vomiting.(7-10) It has been suggested that some patients find this combination of agents a pleasant experience, citing giddiness and excitement as rationale for abuse.(11) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients receiving fexinidazole should be instructed to avoid alcohol during and for at least 48 hours after taking fexinidazole.(6) Patients should be advised of the possible affects that may result from ingestion or application of products that contain alcohol while taking metronidazole. Patients receiving tinidazole should be instructed to avoid alcohol during and for 3 days after taking tinidazole.(7) Patients should be informed about unsuspected sources of alcohol such as elixirs and topical preparations. Caution is also warranted when using intravenous preparations containing alcohol solvents in patients receiving metronidazole or tinidazole. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (22): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: In a case report,(13) a patient developed disulfiram-like reactions after receiving concurrent metronidazole and intravenous sulfamethoxazole-trimethoprim, which is solubilized in a 10% alcohol base. In another case report, a female patient using vaginal inserts containing metronidazole once daily at bedtime ingested two or three drinks containing 30ml of vodka on the fifth day of metronidazole therapy.(14) About a half hour later, the patient inserted the metronidazole vaginal tablet and awoke one hour later with a severe burning sensation in her stomach, a severe headache, and nausea accompanied by a cold sweat. These symptoms resolved in about four hours. Other studies have failed to observe a disulfiram-like reaction between alcohol and metronidazole.(15-21) |
BISMUTH-METRONIDAZOLE-TETRACYC, LIKMEZ, METRO IV, METRONIDAZOLE, METRONIDAZOLE BENZOATE, METRONIDAZOLE MICRONIZED, NUVESSA, PYLERA, TINIDAZOLE, VANDAZOLE |
Ethyl Alcohol/Selected Cephalosporins SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Certain cephalosporins have a methyltetrazolethiol side chain that resembles part of the disulfiram molecule. It has been suggested that the cephalosporins with this side chain interfere with the activity of the alcohol-metabolizing enzyme, aldehyde dehydrogenase, resulting in elevated concentrations of acetaldehyde and a "disulfiram-like" reaction.(1) CLINICAL EFFECTS: A disulfiram-like reaction may occur in patients who ingest alcohol during and after taking some cephalosporins. Symptoms include throbbing in the head and neck, palpitations, tachycardia, hypotension, sweating, nausea, and vomiting. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients receiving cephalosporins with a methyltetrazolethiol side chain should be cautioned about consuming alcohol during and for several days after therapy. Patients should be informed about unsuspected sources of alcohol such as elixirs and topical preparations. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (17) : Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: A disulfiram-like reaction has been reported following the ingestion of alcohol by patients receiving cefamandole,(2-4) cefoperazone, (5-7) cefotetan,(8) and moxalactam.(9-11) The reaction has been reported in patients who had been receiving the antibiotic periodically or continuously before alcohol consumption. The reaction occurred within 30 minutes of alcohol consumption.(5-7) In one patient, the reaction occurred after an injection of 15 ml of a 67% alcohol into the paraaortic space for celiac plexus alcohol block.(11) Cefonicid and ceforanide have exhibited these effects in animal studies. (12) However, another study showed that cefonicid did not interact with alcohol.(13) No interaction was found with cefazolin, cefotaxime, cefoxitin, cephalothin, or cephradine in animal studies.(14-15) A study in humans found no interaction with ceftizoxime.(1) These cephalosporins do not have a methyltetrazolethiol side chain. A single case reported a disulfiram-like reaction in a patient taking cefonicid therapy on two separate occasions.(16) |
CEFOTAN, CEFOTETAN |
Ethyl Alcohol/Benzodiazepines SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concurrent use may result in additive central nervous system depressant effects. Concurrent use may also result in altered absorption, altered distribution, or decreased elimination leading to higher concentrations of the benzodiazepine in the brain.(1-4) CLINICAL EFFECTS: Concurrent use of benzodiazepines and alcohol-containing products may result in enhanced disruption of psychomotor performance and increased central nervous system depression. Increased CNS depression may result in profound sedation, respiratory depression, coma, and/or death. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients should be informed that alcohol consumption may result in significant decreased psychomotor performance and its associated risks. Use of a short acting benzodiazepine may minimize the potential for extreme effects. If suicide or drug abuse is a concern, benzodiazepine use may be ill advised, since alcohol tends to greatly increase benzodiazepine-induced CNS depression in acute overdosage. Patients should be informed about unsuspected sources of alcohol such as medications. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (18): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Several articles have detailed enhanced disruption of psychomotor performance and increased CNS depression with concurrent use of diazepam and alcohol.(1-6) Evidence shows that temazepam and the other short-acting or intermediate-acting benzodiazepines (e.g., alprazolam, halazepam, triazolam) tend to result in less profound alcohol interactions.(7) Although one study showed no effect on triazolam pharmacokinetics, a clinically significant pharmacodynamic interaction cannot be ruled out.(8) Other reports have shown clinically significant effects from concurrent triazolam and alcohol use.(9,10) In 8 healthy subjects, concurrent midazolam and alcohol resulted in impairment of immediate recall.(11) In a similar study, the hypnotic effect of midazolam was augmented by alcohol.(12) In a study involving 9 subjects, measurements of total reaction time were longer after concurrent alcohol and lorazepam as compared to the use of either agent alone.(13) Reports have been conflicting regarding the actions of chlordiazepoxide when combined with alcohol. Differences in time of exposure, dosage, and response parameters have been used to explain the inconsistent findings with chlordiazepoxide.(14) |
ALPRAZOLAM, ALPRAZOLAM ER, ALPRAZOLAM INTENSOL, ALPRAZOLAM ODT, ALPRAZOLAM XR, ATIVAN, BYFAVO, CHLORDIAZEPOXIDE HCL, CHLORDIAZEPOXIDE-AMITRIPTYLINE, CHLORDIAZEPOXIDE-CLIDINIUM, CLOBAZAM, CLONAZEPAM, CLORAZEPATE DIPOTASSIUM, DIAZEPAM, DORAL, ESTAZOLAM, FLURAZEPAM HCL, HALCION, KLONOPIN, LIBRAX, LORAZEPAM, LORAZEPAM INTENSOL, LOREEV XR, MIDAZOLAM, MIDAZOLAM HCL, MIDAZOLAM HCL-0.8% NACL, MIDAZOLAM HCL-0.9% NACL, MIDAZOLAM HCL-D5W, MIDAZOLAM HCL-NACL, MIDAZOLAM-0.9% NACL, MIDAZOLAM-NACL, MKO (MIDAZOLAM-KETAMINE-ONDAN), NAYZILAM, ONFI, OXAZEPAM, QUAZEPAM, RESTORIL, SYMPAZAN, TEMAZEPAM, TRIAZOLAM, VALIUM, VALTOCO, XANAX, XANAX XR |
Ethyl Alcohol/Levamisole SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: The exact mechanism of this interaction is unknown. CLINICAL EFFECTS: Levamisole hydrochloride has been reported to produce disulfiram-like side effects following the ingestion of alcohol. Some signs of this interaction include throbbing in the head and neck, flushing, palpitations, tachycardia, hypotension, sweating, nausea, and vomiting. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients should be advised of the possible affects that may result from the concurrent use of levamisole and alcohol or alcohol containing products. Patients should be informed about unsuspected sources of alcohol such as medications. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (2): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: The duration of this interaction may vary depending on the amount of alcohol consumed. The quantity of alcohol needed to elicit this interaction varies with individuals. |
LEVAMISOLE HCL |
Fomepizole/Ethyl Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Fomepizole inhibits the activity of alcohol dehydrogenase, an enzyme needed to help eliminate alcohol. Additionally, alcohol can decrease the rate of elimination of fomepizole by the same mechanism. CLINICAL EFFECTS: This interaction may cause an increase in the adverse events associated with both increased alcohol levels as well as increased fomepizole levels. Increase fomepizole levels may result in headache, nausea, dizziness, and drowsiness. Increased alcohol levels may cause sedation, decreased motor skills, and loss of consciousness. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients should be advised of this potential hazard and should be encouraged not to ingest alcohol containing products during the course of therapy with fomepizole. Patients should be informed about unsuspected sources of alcohol, such as medications. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (2): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Fomepizole (10-20 mg/kg) significantly reduced the rate of elimination of ethanol by approximately 40%, given in moderate doses to healthy volunteers. This occurred because of inhibition of alcohol dehydrogenase. Similarly, ethanol decreased the rate of elimination of fomepizole by approximately 50%, by the same mechanism.(1) |
FOMEPIZOLE |
Acitretin/Ethyl Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Ethanol trans esterifies acitretin into etretinate,(1-3) which is stored in adipose tissue and slowly eliminated.(1) CLINICAL EFFECTS: Ingestion of ethanol, even sporadically, during acitretin usage and for 2 months after discontinuation of acitretin may result in formation of etretinate. Etretinate is also highly teratogenic and is slowly eliminated from the body over several years after discontinuation.(4) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer of acitretin states that use of ethanol during or for 2 months after acitretin therapy in females is contraindicated.(4) Females on acitretin therapy should be counseled to avoid consumption and use of ethanol containing products during and for two months after acitretin use.(4) Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (6): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: In a 2-way cross-over study in 10 subjects, consumption of a single dose of acitretin (100 mg) during ethanol ingestion (1.4 g/kg) resulted in formation of etretinate in all 10 subjects. The levels of etretinate formed were comparable to a 5 mg dose of etretinate. There was no detectable etretinate levels in any subject during administration of acitretin without ethanol.(4) In a study in 10 subjects treated with acitretin (30 mg daily for 3 months), 7 patients had detectable etretinate levels, 4 of which were teratogenic. Consumption of ethanol was linked to the formation of etretinate.(1) In a study in 86 patients treated with acitretin, 30 patients had detectable levels of etretinate. No etretinate was found in 20 subjects who reported no ethanol intake. Etretinate was found in all 16 subjects with an average weekly alcohol consumption of greater than 200 g (approximately 15 servings/week). Etretinate was found in 15 of 50 patients with an average weekly ethanol intake less than 200 g.(5) The half-life of etretinate has been estimated at 120 days (range 84-168 days). In a study of 47 patients treated with etretinate, 5 had detectable etretinate levels 2.1 years to 2.9 years after discontinuation of therapy. However, one patient who reported sporadic ethanol intake had detectable etretinate levels 52 months after discontinuation of acitretin.(4) |
ACITRETIN |
Selected Extended-Release CNS Stimulants/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with selected extended or delayed release amphetamine, dextroamphetamine, and methylphenidate products may impair the integrity of the extended-release dose form resulting in accelerated medication release over a short period of time.(1-8) CLINICAL EFFECTS: Rapid release of amphetamine, dextroamphetamine, or methylphenidate may result in increased systemic concentrations and toxicities. PREDISPOSING FACTORS: The increased rate of release may be alcohol concentration-dependent. PATIENT MANAGEMENT: Patients are advised to avoid alcohol while taking these extended-release products.(1-8) Avoid the use of elixirs containing a high-percentage of alcohol in patients taking these products. DISCUSSION: Some, but not all manufacturers have evaluated the effects of alcohol on the kinetics of their extended release dose forms. An in vitro study explored the effect of alcohol on the release characteristics of amphetamine from Adzenys XR-OPD. There was a substantial increase in amphetamine release with 40% alcohol, but not 5%, 10%, or 20% alcohol.(1) An in vitro study explored the effect of alcohol on the release characteristics of amphetamine from Dyanavel XR. There was a substantial increase in amphetamine release with 40% alcohol, but not 5%, 10%, or 20% alcohol.(2) An in vitro study explored the effect of alcohol on the release characteristics of amphetamine from Mydayis. There was an increase in amphetamine release with 20% alcohol and a larger increase with 40% alcohol.(3) An in vitro study explored the effect of alcohol on the release characteristics of methylphenidate from Adhansia XR. At an alcohol concentration of 40%, 71% and 61% of a 70 mg and 100 mg dose, respectively, was released at 2 hours. A study in healthy adults found that 40% alcohol combined with Adhansia XR resulted in a 1.4-fold increase in peak plasma concentration and 1.3-fold increase in absorption.(4) An in vitro study explored the effect of alcohol on the release characteristics of methylphenidate for Concerta. At an alcohol concentration up to 40% there was no increased release of methylphenidate in the first hour.(5) An in vitro study explored the effect of alcohol on the release characteristics of methylphenidate from Cotempla XR-ODT. There was an increase in methylphenidate release with 40% alcohol, but not with lower alcohol concentration.(6) An in vitro study explored the effect of alcohol on the release characteristics of methylphenidate from Metadate CD. At an alcohol concentration of 40%, 84% of methylphenidate was released in the first hour.(7) An in vitro study explored the effect of alcohol on the release characteristics of methylphenidate from Ritalin LA. At an alcohol concentration of 40%, 98% of methylphenidate was released in the first hour.(8) |
ADZENYS XR-ODT, COTEMPLA XR-ODT, DEXTROAMPHETAMINE-AMPHET ER, DYANAVEL XR, METADATE CD, METHYLPHENIDATE ER (LA), METHYLPHENIDATE HCL CD, METHYLPHENIDATE HCL ER (CD), MYDAYIS, RITALIN LA |
Flibanserin/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Flibanserin may be associated with hypotension or syncopal episodes.(1) CLINICAL EFFECTS: Concurrent use of alcohol in patients taking flibanserin may substantially increase the risk for hypotension or syncope.(1) PREDISPOSING FACTORS: Patients with any degree of hepatic impairment, who are CYP2C19 poor metabolizers, or who also receive concomitant therapy with moderate or strong CYP3A4 inhibitors are expected to have increased systemic concentrations of flibanserin, adding to the risk for hypotension or syncopal episodes.(1) Hypotensive or syncopal episodes are more common when flibanserin is taken during waking hours.(1) PATIENT MANAGEMENT: To decrease the risk for hypotension or syncope, counsel patients to take flibanserin at bedtime. Advise patients to wait at least two hours after consuming one or two standard alcoholic drinks before taking flibanserin at bedtime. If three or more standard alcoholic drinks are consumed, skip the dose of flibanserin that evening. After taking flibanserin at bedtime, patients should not use alcohol until the following day.(1) One standard alcoholic drink contains 14 grams of pure alcohol and is equivalent to one 12-ounce regular beer (5% alcohol), 5-ounces wine (12% alcohol), or 1.5 ounces of distilled spirits/shot (40% alcohol). Advise patients to lie down and call for medical help for persistent pre-syncope or lightheadedness.(1) Significant quantities of alcohol may be present in medicinal products. Alcohol is is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (2): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: A dedicated alcohol interaction study included 23 men and 2 women. Subjects took flibanserin or alcohol alone, or flibanserin and either 0.4 gram/kg or 0.8 gram/kg of alcohol. The alcohol dose was consumed over 10 minutes.(1) Co-administration of flibanserin and 0.4 gram/kg alcohol (approximately equal to 2 glasses of wine or 2 cans of beer) led to hypotension or syncope requiring therapeutic intervention in 4 of 23 subjects (17%). The magnitude of systolic blood pressure reductions ranged from 28 to 54 mmHg and diastolic blood pressure reductions ranged from 24 to 46 mmHg. In the flibanserin and alcohol 0.8 gram/kg group, 6 of the 24 subjects experienced orthostatic hypotension when moving from a sitting to standing position. The magnitude of systolic blood pressure reduction ranged from 22 to 48 mmHg and diastolic reductions ranged from 0 to 27 mmHg. One of the subjects required therapeutic intervention. In contrast, there were no events requiring therapeutic intervention when flibanserin or alcohol were administered alone.(1) In a study, 96 pre-menopausal women were given flibanserin or alcohol alone, or flibanserin with 0.2 gram/kg, 0.4 gram/kg, or 0.6 gram/kg alcohol in the morning. Although no subjects had syncope or hypotension requiring therapeutic intervention, subjects were not allowed to stand for orthostatics if they were hypotensive (blood pressure <90/60 mmHg) or dizzy while semi-recumbent. More subjects who received the combination of flibanserin and alcohol than those who received flibanserin or alcohol alone had missing or delayed orthostatic measurements due to hypotension or dizziness.(1) A study of 64 pre-menopausal women who drank 0.4 g/kg of alcohol two, four, or six hours before taking a dose of flibanserin 100 mg or placebo found that there was no difference in the incidence of orthostatic hypotension or hypotension at all time points between subjects who received alcohol alone, flibanserin alone, or both.(1) A study of 24 pre-menopausal women compared flibanserin or alcohol alone, or flibanserin given 2.5 hours or 4 hours after consumption of 0.4 gram/kg alcohol. There were no cases of syncope, dizziness, or somnolence in any group.(1) |
ADDYI, FLIBANSERIN |
Posaconazole (Powder for Suspension)/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with the delayed-release powder for suspension formulation of posaconazole may result in faster release of posaconazole and interfere with the delayed-release characteristics of the formulation.(1) CLINICAL EFFECTS: Concurrent use of alcohol may result in the powder for suspension formulation having more similar kinetics to the immediate-release oral suspension formulation, which has lower and more variable bioavailability of posaconazole. This may lead to decreased blood levels and efficacy of posaconazole.(1,2) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer of posaconazole states that the administration of posaconazole powder for suspension with alcohol is not recommended.(1) Patients are advised to avoid alcohol and elixirs containing a high-percentage of alcohol while taking this product. DISCUSSION: An in vitro dissolution study demonstrated the potential for alcohol-induced dose-dumping with posaconazole delayed-release powder for suspension in the presence of alcohol (5, 10, 20, and 40%), especially at higher concentrations.(1,2) |
NOXAFIL |
Ranolazine (Extended Release Granules)/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with ranolazine extended-release granules may cause a rapid release of ranolazine.(1) CLINICAL EFFECTS: Rapid release of ranolazine may result in increased systemic concentrations and toxicities, including QTc prolongation and life-threatening cardiac arrhythmia like torsades de pointes.(1) PREDISPOSING FACTORS: The increased rate of release may be alcohol concentration-dependent. 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: Patients are advised to avoid alcohol while taking ranolazine extended-release granules. Avoid the use of elixirs containing a high-percentage of alcohol in patients taking these products.(1) DISCUSSION: An in-vitro dissolution study was conducted to evaluate the impact of alcohol on extended-release characteristics of ranolazine granules. The in-vitro study showed that alcohol causes a rapid release of ranolazine from the extended-release granules that may increase the risk of adverse events associated with ranolazine.(1) |
ASPRUZYO SPRINKLE |
Tacrolimus (Extended Release)/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with tacrolimus extended release formulations may result in increased tacrolimus levels in the blood due to a rapid release of tacrolimus.(1-5) CLINICAL EFFECTS: Concurrent use of alcohol may result in a faster release of tacrolimus and interfere with the extended release characteristics of the formulation, potentially increasing absorption and blood levels of tacrolimus. Increased levels of tacrolimus may increase the risk of toxicities, including nephrotoxicity, neurotoxicity, and QT prolongation.(1) 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: The manufacturers of tacrolimus extended release formulations state that the concurrent use of alcohol is not recommended.(1-4) Patients are advised to avoid alcohol while taking this product. DISCUSSION: In vitro dissolution studies evaluated the potential for alcohol-induced dose-dumping with extended release tacrolimus products in the presence of alcohol at varying alcohol concentrations (5, 10, 20, and 40%).(3-5) Data from the manufacturer of tacrolimus extended release tablets show there is no alcohol-induced dose-dumping in the various alcohol concentrations. However, the rate of drug release was increased by 10% (5% to 15%) at 2.5 hours in the presence of roughly 40% alcohol at pH 1.2 for the 0.75 mg, 1 mg, and 4 mg tablet.(4) Data from in vitro studies regarding tacrolimus extended release capsules found an average of 35% and 25% of the dose was released at 0.5 hour for the 0.5 mg and 5 mg strengths respectively at a pH of 1.2 in an alcohol concentration of 20%. At an alcohol concentration of 40%, the amount of the dose released at 0.5 hour was 89% and 54% for the 0.5 mg and 5 mg strengths.(3,5) |
ASTAGRAF XL, ENVARSUS XR, TACROLIMUS XL |
Levomilnacipran (Extended Release)/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with extended-release levomilnacipran may cause a rapid release of levomilnacipran.(1) CLINICAL EFFECTS: Rapid release of levomilnacipran may result in increased systemic concentrations and toxicities, including bleeding, seizures, hypertension, tachycardia, and serotonin syndrome.(1) Symptoms of serotonin syndrome may include tremor, agitation, diaphoresis, hyperreflexia, clonus, tachycardia, hyperthermia, and muscle rigidity. PREDISPOSING FACTORS: The increased rate of release may be alcohol concentration-dependent. PATIENT MANAGEMENT: Patients are advised to avoid alcohol while taking extended-release levomilnacipran. Avoid the use of elixirs containing a high-percentage of alcohol in patients taking these products.(1) DISCUSSION: An in-vitro dissolution study found that alcohol (5%, 20%, and 40% (v/v)) increases levomilnacipran release from extended-release capsules by 9.5%, 23%, and 56% at 2 hours. Alcohol 40% resulted in nearly complete drug release in 4 hours.(1) |
FETZIMA |
Metoprolol (Extended Release)/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with metoprolol extended-release capsules may cause a rapid release of metoprolol.(1) CLINICAL EFFECTS: Rapid release of metoprolol may result in increased systemic concentrations and toxicities, including bradycardia and hypotension.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer of metoprolol extended release capsules states that concurrent use with alcohol should be avoided.(1) Patients are advised to avoid alcohol and elixirs containing a high-percentage of alcohol while taking this product. DISCUSSION: An in vitro dissolution study evaluated the potential for alcohol-induced dose-dumping with metoprolol extended-release capsules in the presence of varying alcohol concentrations (5, 10, 20, and 40%). The rate of drug release was increased. The study showed that approximately 89% of the total metoprolol dose was released at 2 hours at the 40% alcohol level, and 17% of total drug was released at 2 hours with 5% alcohol.(1) |
KAPSPARGO SPRINKLE |
Benzgalantamine/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with benzgalantamine may cause a rapid release of benzgalantamine.(1) CLINICAL EFFECTS: Rapid release of benzgalantamine may result in increased systemic concentrations and toxicities, including gastrointestinal bleeding, seizures, bradycardia, AV block, and QT prolongation. PREDISPOSING FACTORS: The increased rate of release may be alcohol concentration-dependent. 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: The manufacturer of benzgalantamine states that benzgalantamine should not be taken with alcohol. Avoid the use of elixirs containing a high-percentage of alcohol in patients taking these products.(1) Patients are advised to avoid alcohol while taking this product. DISCUSSION: An in-vitro dissolution study found that alcohol (40% (v/v)) increases benzgalantamine release. Dose dumping was not observed in the presence of lower alcohol concentrations.(1) |
ZUNVEYL |
Levodopa (Extended Release)/Alcohol SEVERITY LEVEL: 2-Severe Interaction: Action is required to reduce the risk of severe adverse interaction. MECHANISM OF ACTION: Concomitant use of alcohol with extended release levodopa may cause a rapid release of levodopa.(1) CLINICAL EFFECTS: Rapid release of levodopa may result in increased systemic concentrations and effects of levodopa, including tremor, hypertensive crisis, and postural hypotension. PREDISPOSING FACTORS: The increased rate of release may be alcohol concentration-dependent. PATIENT MANAGEMENT: The manufacturer of Crexont (levodopa-carbidopa) states that Crexont should not be taken with alcohol. Avoid the use of elixirs containing a high-percentage of alcohol in patients taking these products.(1) Patients are advised to avoid alcohol while taking this product. DISCUSSION: An in-vitro dissolution study found that alcohol (40% (v/v)) increases levodopa release. Dose dumping was not observed in the presence of lower alcohol concentrations.(1) |
CREXONT |
There are 28 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 |
---|---|
Tetracyclines/Divalent & Trivalent Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Di- and trivalent cations may form chelation complexes with tetracyclines, preventing their absorption.(1,2) CLINICAL EFFECTS: Simultaneous administration of di- or trivalent cations may result in decreased levels of and therapeutics effects from tetracyclines. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Administer tetracyclines at least two hours before or after the di- or trivalent cations. When used for the treatment of H. pylori infection, tetracyclines and bismuth should be given simultaneously. The US manufacturer of omadacycline states to fast for at least four hours, administer omadacycline, and then wait four hours before taking di- or trivalent cations.(21) DISCUSSION: Concurrent administration of aluminum hydroxide or divalent cations (such as calcium, magnesium, or zinc) has been shown to significantly decrease the gastrointestinal absorption of tetracycline.(3-5) Concurrent administration of tetracycline and magnesium-aluminum hydroxide gel has been shown to decrease the tetracycline area-under-curve (AUC) by 90%.(6) Magnesium-aluminum silicate has been shown to decrease the AUC of tetracycline by 27%.(7) Demeclocycline(8,9) methacycline,(10) chlortetracycline,(11) and oxytetracycline(10,12) have been shown to interact with aluminum hydroxide and/or dairy products. Doxycycline has been reported to interact with aluminum hydroxide gel.(13) Aluminum magnesium hydroxide has been shown to decrease doxycycline absorption by 84%.(14) Minocycline absorption has been shown to be impaired by aluminum, calcium, and magnesium.(15) Bismuth subsalicylate has been shown to decrease absorption of doxycycline and tetracycline by 37%(16) and 34%,(17) respectively. Since sucralfate is an aluminum salt of a sulfated disaccharide, it may also prevent absorption of tetracyclines. This complex has been used to provide site-specific delivery of tetracycline to gastric ulcers in the treatment of Helicobacter pylori gastric ulcer disease and may be useful in some indications.(18) Quinapril tablets contain a high percentage of magnesium and have been shown to decrease the absorption of tetracycline by 28-37%.(19) Lanthanum is expected to interact with tetracyclines as well.(20) |
AVIDOXY, AVIDOXY DK, BENZODOX 30, BENZODOX 60, BISMUTH-METRONIDAZOLE-TETRACYC, DEMECLOCYCLINE HCL, DORYX, DORYX MPC, DOXYCYCLINE HYCLATE, DOXYCYCLINE IR-DR, DOXYCYCLINE MONOHYDRATE, EMROSI, MINOCYCLINE ER, MINOCYCLINE HCL, MINOCYCLINE HCL ER, MONDOXYNE NL, MORGIDOX, NUZYRA, ORACEA, OXYTETRACYCLINE HCL, PYLERA, SEYSARA, TARGADOX, TETRACYCLINE HCL, XIMINO |
Penicillamine, Oral/Polyvalent Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Penicillamine chelates with polyvalent cations such as aluminum, calcium, iron, magnesium, and zinc in the GI tract reducing the absorption of the penicillamine. CLINICAL EFFECTS: Reduced (to 30% of fasting) bioavailability of penicillamine with decreased pharmacologic response. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: In order to assure systemic absorption and maximal effectiveness from penicillamine, counsel patient to separate penicillamine by at least 1 hour before or 1 hours after any medications or products containing polyvalent cations such as antacids or mineral supplements. Monitor clinical status for decreased effectiveness and adjust the penicillamine dose if necessary. DISCUSSION: Clinical studies with polyvalent cations have not been conducted. Multivitamins with low doses of cations including iron and zinc may decrease penicillamine absorption so insure patient is aware of the risks. |
CUPRIMINE, D-PENAMINE, DEPEN, PENICILLAMINE, PENICILLAMINE(D-) |
Thyroid Preparations/Calcium; Iron; Sucralfate SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: The mechanism by which malabsorption of thyroid preparations occurs from calcium-containing products is presumed to be a binding of the medication to the thyroid hormone, forming an insoluble or nonabsorbable complex.(1-3) Iron may form a ferric-thyroxine complex with thyroid agents, preventing their absorption from the gastrointestinal tract.(1,4) Sucralfate binds to other agents in the gastrointestinal tract and alters absorption of other drugs, including thyroid agents.(1,5) CLINICAL EFFECTS: The simultaneous administration of thyroid preparations with calcium, iron, or sucralfate may result in decreased levels and clinical effects of thyroid preparations.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Instruct patients to separate the administration time of thyroid preparations from calcium or iron by as much time as possible, preferably by at least four hours.(1) Administer thyroid preparations at least 2 hours before sucralfate.(5) Patients taking thyroid preparations and calcium- or iron-containing products or sucralfate should be monitored for changes in thyroid function. The dosage of the thyroid preparation may need to be increased. Separating the administration times of the thyroid preparation and the calcium- or iron-containing products or sucralfate may decrease the effects of the interaction.(1-5) DISCUSSION: In a pharmacokinetic study 8 healthy, euthyroid adults were given levothyroxine alone and levothyroxine coadministered with calcium carbonate, calcium citrate, or calcium acetate in doses containing 500 mg elemental calcium. The coadministration of each of the three calcium preparations significantly reduced levothyroxine absorption by about 20%-25% compared with levothyroxine given alone.(3) In a study in 14 subjects, the simultaneous administration of thyroxine with ferrous sulfate for 12 weeks resulted in an increase in the mean level of thyroid stimulating hormone (TSH) from 1.6+/-0.4 mU/L to 5.4+/-2.8 mU/L. Mixing thyroxine with ferrous sulfate in vitro resulted in a poorly soluble complex.(4) In a study in 20 hypothyroid patients, the simultaneous administration of levothyroxine and calcium carbonate (1200 mg) daily for three months resulted in reductions in the mean free T4 and total T4 levels. These values increased in most patients following the discontinuation of calcium carbonate. A concurrent in-vitro study found that calcium carbonate adsorbed levothyroxine in solution at a pH of 2, gastric pH, but not at a pH of 7.4.(6) One author reported three cases of decreased levothyroxine efficacy following the addition of calcium carbonate to therapy.(7) In a study in 5 healthy subjects, levothyroxine (five 200 mcg tablets) was administered in 3 different dosing regimens: after an overnight fast, with the fifth and final dose of sucralfate (1 gram every 6 hours) and 8 hours after the second and final dose of sucralfate (2 grams every 12 hours). When administered alone, 80% of levothyroxine was absorbed within 6 hours of administration, compared to 23% when administered concurrently with sucralfate. There was no difference in levothyroxine absorption when administered alone or 8 hours after sucralfate.(8) There are several case reports documenting decreased effects of thyroid supplementation as the result of simultaneous administration of sucralfate.(9,10) 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. |
ADTHYZA, ARMOUR THYROID, CYTOMEL, ERMEZA, EUTHYROX, LEVO-T, LEVOTHYROXINE SODIUM, LEVOTHYROXINE SODIUM DILUTION, LEVOXYL, LIOTHYRONINE SODIUM, NIVA THYROID, NP THYROID, PCCA T3 SODIUM DILUTION, PCCA T4 SODIUM DILUTION, RENTHYROID, SYNTHROID, THYQUIDITY, THYROID, TIROSINT, TIROSINT-SOL, UNITHROID |
Hydantoins/Ethyl Alcohol SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Chronic alcohol ingestion may result in alterations in the metabolism of phenytoin. CLINICAL EFFECTS: Chronic alcohol ingestion may result in either elevated phenytoin levels, which may result in increased phenytoin adverse effects, or in a decrease in phenytoin levels, which may result in decreased seizure control. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Phenytoin levels should be monitored in patients who ingest alcohol chronically and in patients who discontinue alcohol consumption. DISCUSSION: It has been reported that long-term alcohol ingestion may increase the metabolism and clearance of phenytoin.(1-3) However, it has also been postulated that long term alcohol ingestion may inhibit phenytoin metabolism, causing phenytoin levels to increase. Phenytoin clearance may increase during alcohol withdrawal, resulting in a decrease in serum serum phenytoin levels.(4) The use of small amounts of alcohol does not produce these effects.(3) |
CEREBYX, DILANTIN, DILANTIN-125, FOSPHENYTOIN SODIUM, PHENYTEK, PHENYTOIN, PHENYTOIN SODIUM, PHENYTOIN SODIUM EXTENDED |
Glinides; Sulfonylureas/Ethyl Alcohol SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Alcohol can induce hypoglycemia and interfere with gluconeogenesis in the liver by means of intrinsic hypoglycemic activity.(1-3) Some alcoholic beverages may increase serum glucose levels from their high carbohydrate content.(4) Chronic alcohol intake may decrease half-life of sulfonylureas by increasing liver metabolism.(1, 5-8) CLINICAL EFFECTS: Alcohol consumption while on a glinide or sulfonylureas may result in unpredictable and varied reactions, ranging from mild flushing to severe hypoglycemic reactions. Alcohol consumption during chlorpropamide therapy has resulted in a disulfiram-like reaction. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Diabetics should be cautioned about the effects of alcohol consumption on diabetic control, possible flushing with concurrent use, and about unsuspected sources of alcohol such as medications. Patients on chlorpropamide therapy should be counseled about the possibility of a disulfiram-like reaction to alcohol consumption. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (21): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Chlorpropamide has been reported to induce facial flushing (5,9-18) and a disulfiram-like reaction(4,9,10,18,19) following alcohol consumption. Tolbutamide has been shown to interact with alcohol in nonalcoholic diabetic patients, alcoholics, and normal subjects.(2,3,6-8,16,17) There is one report of reduced tolerance for alcohol in a patient on tolazamide therapy.(20) In a study in 10 normal subjects, administration of ethanol with glipizide resulted in a delay in return to fasting glucose levels. The time of onset and the extent of hypoglycemia were not altered.(21) Glipizide and glyburide have been reported to have a very low incidence of disulfiram-like reactions with concurrent alcohol; however, in one study, 5 of 11 patients taking glyburide developed flushing after a test dose of alcohol.(18) |
DUETACT, GLIMEPIRIDE, GLIPIZIDE, GLIPIZIDE ER, GLIPIZIDE XL, GLIPIZIDE-METFORMIN, GLUCOTROL XL, GLYBURIDE, GLYBURIDE MICRONIZED, GLYBURIDE-METFORMIN HCL, NATEGLINIDE, PIOGLITAZONE-GLIMEPIRIDE, REPAGLINIDE |
Chloral Hydrate Derivatives/Ethyl Alcohol SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Alcohol stimulates the reduction of chloral hydrate to trichloroethanol, which is longer-acting than the parent compound.(1) Trichloroethanol in turn inhibits the oxidation of alcohol to acetaldehyde by alcohol dehydrogenase. Enhanced CNS depression occurs. The mechanism for the development of vasodilation is not known but is not related to increased acetaldehyde levels.(1,2,4) CLINICAL EFFECTS: Concurrent ingestion of chloral hydrate and alcohol results in greater CNS depression than that occurring when either agent is taken alone.(2,3) In addition, a disulfiram-like reaction characterized by vasodilation, flushing, tachycardia, hypotension, or headache may occur when alcohol is ingested by a patient who has been receiving chloral hydrate for several days.(1,2) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: All patients taking chloral hydrate should be warned that the CNS depressant effects of both chloral hydrate and alcohol are increased by concurrent ingestion and the possibility of a disulfiram-like reaction. Patients should be informed about unsuspected sources of alcohol such as medications. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (5): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Patients with cardiovascular disease who receive chloral hydrate long-term should be especially careful about ingesting alcohol in view of the tachycardia and hypotension that can result from the vasodilation reaction. |
CHLORAL HYDRATE |
Cefdinir/Oral Iron SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Iron may form a chelation complex with cefdinir, preventing its absorption.(1,2) CLINICAL EFFECTS: Simultaneous administration of cefdinir with iron may result in decreased levels and clinical effectiveness of cefdinir.(1,2) Concurrent use may also result in a reddish color of stools.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Cefdinir should be taken at least 2 hours before or after iron supplements, including multivitamins containing iron.(1) Patients should be counseled that their stool may turn reddish during treatment with cefdinir. Cefdinir may be administered simultaneously with iron-fortified infant formula.(1) DISCUSSION: Simultaneous administration of cefdinir with a therapeutic iron supplement containing 60 mg of elemental iron as ferrous sulfate or vitamins containing 10 mg of elemental iron decreased cefdinir absorption by 80% and 31%, respectively.(1) Simultaneous administration of iron with cefdinir (200 mg) decreased cefdinir area-under-curve (AUC) by 93%.(2) There have been reports of reddish stools in patients taking cefdinir, most of these patients were taking iron-containing products.(1) |
CEFDINIR |
Oral Bisphosphonates/Oral Multivalent Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Multivalent cations may bind to and inhibit the absorption of oral bisphosphonates.(1-6) CLINICAL EFFECTS: Simultaneous administration of products containing multivalent cations may result in decreased levels of and clinical effects from oral bisphosphonates.(1-6) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Instruct patients to separate the administration times of products containing multivalent cations and oral bisphosphonates. Manufacturer recommendations regarding the separation of administration times of oral bisphosphonates and multivalent cations vary. Do NOT give multivalent cation-containing products: - until at least 30 minutes after taking alendronate(1) - within 2 hours of etidronate(2) - until at least 1 hour after taking ibandronate(3) - until at least 30 minutes after taking risedronate(4) - within 2 hours of tiludronate(5) DISCUSSION: Multivalent cations may bind to and inhibit the absorption of oral bisphosphonates, resulting in decreased levels of and clinical effects from these agents.(1-6) Administration of aluminum- or magnesium-containing antacids 1 hour before tiludronate decreased the bioavailability of tiludronate by 60%.(5) |
ACTONEL, ALENDRONATE SODIUM, ATELVIA, BINOSTO, FOSAMAX, FOSAMAX PLUS D, IBANDRONATE SODIUM, RISEDRONATE SODIUM, RISEDRONATE SODIUM DR |
Oral Iron Supplements/Antacids and Selected Minerals SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Some antacids may bind to iron, preventing its absorption. Alterations in gastric pH by antacids may also play a role. Iron may bind to other minerals such as calcium, manganese, tin, and zinc in the GI tract. CLINICAL EFFECTS: Simultaneous administration of an antacid or minerals may decrease the absorption of orally administered iron. PREDISPOSING FACTORS: The interaction with some combinations may be affected by the presence or absence of food. PATIENT MANAGEMENT: Iron supplements should not be taken within 1 hour before or 2 hours after antacids, calcium, manganese, or zinc.(1) Some vitamin preparations may contain sufficient quantities of calcium and/or magnesium salts with antacid properties to interact as well. DISCUSSION: Magnesium hydroxide has been shown to inhibit the absorption of elemental iron,(2) although other studies have shown conflicting results.(3,4) Sodium bicarbonate has been shown to decrease the absorption of iron by 50%.(3) In a study in 61 healthy subjects, calcium citrate, calcium carbonate, and calcium phosphate inhibited iron absorption when taken with food. However, in the fasted state, calcium carbonate had no effect on iron absorption. In the fasted state, calcium citrate and calcium phosphate decreased iron absorption by 49% and 62%, respectively,(6) In a study in 23 healthy subjects, calcium acetate and calcium carbonate decreased the area-under-curve (AUC) of elemental iron (65 mg) by 27% and 19%, respectively.(7) In a study, manganese decreased iron absorption. A ratio of 5:1 of zinc:iron decreased iron absorption by 56%.(8) In a study, inorganic iron decreased zinc absorption.(9) In another study, ferrous sulfate decreased the absorption of zinc sulfate in a concentration dependent manner; however, heme chloride had no effect on zinc sulfate.(10) In a study in premature infants, administration of liquid zinc and iron supplements between feedings decreased iron uptake; however, no effect was seen when the supplements were mixed with feedings.(11) 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. |
ALUMINUM HYDROXIDE, AVIDOXY DK, CALCIUM ACETATE, CALCIUM CHLORIDE, CALCIUM GLUCONATE, CALCIUM GLUCONATE MONOHYDRATE, CLENPIQ, DILUENT FOR ROTARIX, GALZIN, GAVILYTE-C, GAVILYTE-G, GAVILYTE-N, GOLYTELY, KONVOMEP, MAGNESIUM CHLORIDE, MAGNESIUM CITRATE, MAGNESIUM OXIDE, MAGNESIUM SULFATE, MANGANESE CHLORIDE, MANGANESE GLUCONATE, MANGANESE SULFATE, OMEPRAZOLE-SODIUM BICARBONATE, PEG 3350-ELECTROLYTE, PEG-3350 AND ELECTROLYTES, SOD SULF-POTASS SULF-MAG SULF, SODIUM BICARBONATE, SUFLAVE, SUPREP, SUTAB, VAXCHORA BUFFER COMPONENT, WILZIN, ZINC ACETATE, ZINC CHLORIDE, ZINC OXIDE, ZINC SULFATE, ZINC UNDECYLENATE |
Eltrombopag/Polyvalent Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Eltrombopag chelates polyvalent cations such as aluminum, calcium, iron, magnesium, selenium, and zinc.(1) CLINICAL EFFECTS: Simultaneous administration of eltrombopag and polyvalent cations may decrease the absorption and clinical effects of eltrombopag. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer of eltrombopag states that it should be administered at least 2 hours before or 4 hours after any medications or products containing polyvalent cations such as antacids or mineral supplements.(1) DISCUSSION: In a crossover study in 25 healthy subjects, administration of eltrombopag with an antacid (1524 mg aluminum hydroxide/1425 mg magnesium carbonate/sodium alginate) decreased eltrombopag levels by 70%.(1,2) |
ALVAIZ, PROMACTA |
Selected Oral Quinolones/Selected Oral Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Aluminum, calcium, iron, lanthanum, magnesium, and zinc may form chelation compounds with the quinolones.(1-39) CLINICAL EFFECTS: Simultaneous administration or administration of products containing aluminum, calcium, iron, lanthanum, magnesium, and/or zinc close to the administration time of an oral quinolone may result in decreased absorption and clinical effectiveness of the quinolone. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: If possible, avoid concurrent therapy with quinolones and cation-containing products. If it is necessary to administer these agents concurrently, follow the manufacturers' recommendations regarding timing of administration of the quinolone and cation-containing products. Manufacturer recommendations regarding the separation of administration times of quinolones and products containing aluminum, calcium, iron, lanthanum, magnesium, and/or zinc vary: ---Do not give ciprofloxacin for at least 2 hours before or 6 hours after oral cations.(1) ---Do not give delafloxacin for at least 2 hours before or 6 hours after oral cations.(2) ---Do not give enoxacin for at least 2 hours before or 8 hours after oral cations.(3) ---Do not give levofloxacin for at least 2 hours before or 2 hours after oral cations.(4) ---Do not give nalidixic acid for at least 2 hours before or 2 hours after oral cations.(5) ---Do not give norfloxacin for at least 2 hours before or 2 hours after oral cations.(6) ---Do not give ofloxacin for at least 2 hours before or 2 hours after oral cations.(7) ---Do not give sparfloxacin for at least 4 hours before oral cations.(8) The US manufacturer of lanthanum recommends that quinolones be taken at least 1 hour before or 4 hours after lanthanum;(9) however, it would be prudent to follow the specific quinolone manufacturers' recommendations regarding concurrent administration of cations. For quinolones not listed above, separate their administration from oral cations by as much time as feasible. DISCUSSION: Aluminum, calcium, iron, magnesium, and zinc products have been shown to form chelation compounds with quinolone antibiotics, resulting in decreased absorption of the quinolone.(1-38) Treatment failures have been reported.(10-12) In a study in 12 healthy subjects, simultaneous administration of didanosine chewable tablets, which contain aluminum and magnesium, decreased ciprofloxacin area-under-curve (AUC) and maximum concentration (Cmax) by 92% and 98%, respectively.(13) The administration of ciprofloxacin 2 hours prior to Videx chewable/dispersible tablets decreased ciprofloxacin concentrations by 26%.(14,15) In a study in healthy subjects, pretreatment with an antacid containing aluminum-magnesium hydroxide at 5-10 minutes, 2 hours, and 4 hours before a single dose of ciprofloxacin decreased ciprofloxacin AUC by 84.9%, 76.8%, and 30%, respectively. There was no effect when the antacid was administered 6 hours before or 2 hours after.(16) In a study in 12 healthy subjects, aluminum hydroxide decreased ciprofloxacin AUC by 85%.(17) In a study in patients on continuous ambulatory peritoneal dialysis, peak levels of ciprofloxacin were decreased by 67% to 92% in patients receiving aluminum-containing antacids.(18) In a study in 15 healthy subjects, simultaneous administration of calcium acetate decreased the bioavailability of ciprofloxacin by 51%.(19) In a study in 6 healthy males, simultaneous administration of calcium carbonate decreased ciprofloxacin Cmax and AUC by 40% and 43%, respectively.(20) In a study in 12 healthy subjects, calcium carbonate decreased ciprofloxacin AUC by 40%.(17) In a study in 13 healthy males, calcium carbonate had no effect on ciprofloxacin bioavailability when administered 2 hours prior to the antibiotic.(21,22) In a study in healthy males, simultaneous administration of calcium polycarbophil decreased ciprofloxacin AUC by 50%.(23) In a study in 8 healthy males, simultaneous administration of ferrous fumarate (200 mg) decreased ciprofloxacin AUC by 70%.(24) In a study in healthy subjects, ferrous gluconate decreased ciprofloxacin bioavailability by 50%; however, no significant effects were seen with iron-ovotransferrin.(25) In a study in 8 healthy subjects, ferrous sulfate decreased the Cmax and AUC of simultaneously administered ciprofloxacin by 54% and 57%, respectively.(26) In a study in 8 healthy subjects, administration of ferrous sulfate decreased the Cmax and AUC of ciprofloxacin by 33% and 46%, respectively. Administration of ferrous gluconate decreased the Cmax and AUC of ciprofloxacin by 57% and 67%, respectively. Administration of a multivitamin product containing calcium, copper, iron, magnesium, manganese, and zinc decreased the Cmax and AUC of ciprofloxacin by 53% and 56%, respectively.(27) In a study in 12 healthy males, ferrous sulfate decreased ciprofloxacin AUC by 63%.(28) In a study in 12 healthy subjects, lanthanum carbonate decreased the area-under-curve (AUC) and maximum concentration (Cmax) of concurrently administered ciprofloxacin by 54% and 56%, respectively.(29) In a study in 12 healthy males, a multivitamin containing zinc decreased ciprofloxacin AUC by 22%.(28) In a study in 12 healthy subjects, an antacid containing aluminum-magnesium hydroxide had no effect on the pharmacokinetics of intravenous enoxacin.(30) In a study in 10 healthy subjects, administration of an aluminum-magnesium hydroxide antacid 0.5 hours or 2 hours before oral enoxacin (400 mg single dose) decreased the AUC of enoxacin by 73% and 43%, respectively. There were no significant effects on enoxacin AUC when the antacid was administered 8 hours before or 2 hours after enoxacin.(31) In a study in 9 healthy subjects, colloidal aluminum phosphate had no effect on the amount of enoxacin absorbed; however, ferrous sulfate (1050 mg) decreased the amount of enoxacin absorption by 10%.(32) In a study in 5 healthy subjects and 5 patients with cystic fibrosis, separation of levofloxacin (750 mg) and calcium carbonate (500 mg 3 times daily with meals) by 2 hours resulted in no interaction in healthy subjects; however, levofloxacin levels were not bioequivalent in patients with cystic fibrosis.(33) Concurrent magnesium-aluminum hydroxide or calcium have been shown to decrease the bioavailability of norfloxacin by 91.0% and 63.5%, respectively.(34) Concurrent zinc has been shown to decrease the bioavailability of norfloxacin.(35) In a study in 8 healthy subjects, ferrous sulfate decreased the Cmax and AUC of simultaneously administered norfloxacin by 75% and 73%, respectively.(26) Simultaneous aluminum phosphate was found to decrease the rate, but not the extent, of absorption of ofloxacin.(36) In a study in 8 healthy subjects, ferrous sulfate decreased the Cmax and AUC of simultaneously administered norfloxacin by 36% and 25%, respectively.(26) In an in vitro study, ferrous sulfate, aluminum hydroxide, and calcium carbonate decreased ofloxacin availability by 32.6%, 30.7%, and 26.2%, respectively. However, in vivo tests showed a significant effect with only aluminum hydroxide.(37) In a study in 9 healthy subjects, simultaneous administration colloidal aluminum phosphate had no effect on ofloxacin (200 mg) absorption; however, ferrous sulfate (1050 mg) decreased the ofloxacin fraction of dose absorbed by 10.85%.(32) In a study in 16 subjects, administration of either aluminum-magnesium hydroxide or calcium carbonate at least 2 hours before or after ofloxacin administration had no significant effects on ofloxacin levels.(38) The administration of an antacid containing aluminum hydroxide and magnesium hydroxide 2 hours before, 2 hours after, and 4 hours after sparfloxacin decreased sparfloxacin levels by 23%, 17%, and 5%, respectively.(39) 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. |
BAXDELA, CIPRO, CIPROFLOXACIN, CIPROFLOXACIN HCL, LEVOFLOXACIN, LEVOFLOXACIN HEMIHYDRATE, NALIDIXIC ACID, OFLOXACIN |
Deferiprone/Aluminum, Iron, Zinc SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Deferiprone chelates polyvalent cations such as aluminum, iron, and zinc.(1) CLINICAL EFFECTS: Deferiprone chelation with oral aluminum, iron or zinc containing products in the gastrointestinal tract may decrease the amount of free deferiprone available for systemic iron chelation. Zinc supplements prescribed to counteract deferiprone-induced zinc deficiency may not be effective if taken near time of deferiprone administration. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer recommends at least a four hour interval between deferiprone dose and administration of aluminum, iron or zinc containing medications or supplements.(1) Avoid use of iron-containing vitamins or nutritional supplements in patients who require chelation therapy for iron overload. DISCUSSION: The US manufacturer has not studied this interaction. The recommendation to separate deferiprone and polyvalent cation doses by at least four hours is based upon the deferiprone mechanism of action.(1) |
DEFERIPRONE, DEFERIPRONE (3 TIMES A DAY), FERRIPROX, FERRIPROX (2 TIMES A DAY), FERRIPROX (3 TIMES A DAY) |
Selected Oral Quinolones/Selected Oral Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Aluminum, iron, lanthanum, magnesium, and zinc may form chelation compounds with the quinolones.(1-23) CLINICAL EFFECTS: Simultaneous administration or administration of products containing aluminum, iron, lanthanum, magnesium, and/or zinc close to the administration time of an oral quinolone may result in decreased absorption and clinical effectiveness of the quinolone PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: If possible, avoid concurrent therapy with quinolones and cation-containing products. If it is necessary to administer these agents concurrently, follow the manufacturers' recommendations regarding timing of administration of the quinolone and cation-containing products. Manufacturer recommendations regarding the separation of administration times of quinolones and products containing aluminum, iron, lanthanum, magnesium, and/or zinc vary: ---Do not give gatifloxacin for at least 4 hours before oral cations(1) ---Do not give gemifloxacin for at least 2 hours before or 3 hours after oral cations.(2) ---Do not give lomefloxacin for at least 2 hours before or 4 hours after oral cations.(3) ---Do not give moxifloxacin for at least 4 hours before or 8 hours after oral cations.(4) ---Do not give trovafloxacin for at least 2 hours before or after oral cations.(5) ---Do not give prulifloxacin for at least 2 hours before or 4 hours after oral cations.(23) The US manufacturer of lanthanum recommends that quinolones be taken at least 1 hour before or 4 hours after lanthanum;(6) however, it would be prudent to follow the specific quinolone manufacturers' recommendations regarding concurrent administration of cations. For quinolones not listed above, separate their administration from oral cations by as much time as feasible. DISCUSSION: Magnesium and aluminum compounds have been shown to form chelation compounds with quinolone antibiotics, resulting in decreased absorption of the quinolone.(1-22) Treatment failures during concurrent use of cations and gatifloxacin(7) and pefloxacin(8) have been reported. In a study in 24 healthy subjects, administration of an aluminum-magnesium hydroxide antacid simultaneously, 2 hours before, or 2 hours after decreased the area-under-curve (AUC) of a single dose of gatifloxacin (400 mg) by 42%, 64%, or 18%, respectively. There were no affects on gatifloxacin AUC when the antacid was administered 4 hours after gatifloxacin.(9) In a study in 16 healthy males, administration of an aluminum-magnesium hydroxide antacid 10 minutes before or 3 hours after a single dose of gemifloxacin (320 mg) decreased the gemifloxacin AUC by 85% and 15%, respectively. There was no affect when the antacid was administered 2 hours after gemifloxacin.(10) In a study in 16 subjects, simultaneous administration of calcium carbonate decreased the maximum concentration (Cmax) and AUC of a single dose of gemifloxacin (320 mg) by 17% and 21%, respectively. There was no effect of calcium carbonate when administered either 2 hours before or after gemifloxacin.(11) In a study in 27 healthy males, the administration of ferrous sulfate (325 mg) 3 hours before a single dose of gemifloxacin (320 mg) decreased the Cmax and AUC of gemifloxacin by 20% and 11%, respectively. There were no effects when ferrous sulfate was administered 2 hours after gemifloxacin.(12) In a study in 8 healthy subjects, ferrous sulfate (100 mg elemental iron) decreased the Cmax and AUC of a single dose of lomefloxacin by 26% and 13%, respectively. There were no effects with concurrent calcium carbonate (500 mg calcium).(13) Magnesium- and aluminum-containing antacids have been shown to decrease the bioavailability of lomefloxacin by 40%.(14) Administration of moxifloxacin 2 hours before, simultaneously, or 4 hours after a magnesium- and aluminum-containing antacid decreased moxifloxacin AUC by 26%, 60%, and 23%, respectively.(15) Simultaneous administration of moxifloxacin and ferrous sulfate (100 mg) decreased the area-under-curve (AUC) and maximum concentration (Cmax) of moxifloxacin by 39% and 59%, respectively.(16) Concurrent administration of calcium had no affect on moxifloxacin pharmacokinetics.(17) In a study in 10 healthy subjects, an aluminum-magnesium hydroxide antacid decreased the bioavailability of pefloxacin (400 mg) by 44.4%.(18) The administration of an antacid containing aluminum hydroxide and magnesium hydroxide 5 minutes before rufloxacin decreased rufloxacin levels by 36%. Administration of the antacid 4 hours after rufloxacin decreased rufloxacin levels by 13%.(19) Magnesium- and aluminum-containing antacids have been shown to decrease the bioavailability of temafloxacin by 40%.(20) Aluminum hydroxide has been shown to decrease the bioavailability of tosufloxacin by 31.6%.(21) Administration of an antacid containing aluminum hydroxide and magnesium hydroxide 30 minutes before trovafloxacin decreased trovafloxacin levels by 66%.(22) 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. |
GATIFLOXACIN SESQUIHYDRATE, MOXIFLOXACIN HCL |
Elvitegravir/Selected Oral Cations 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 aluminum, calcium, iron, magnesium, sucralfate, and zinc may bind to elvitegravir in GI tract. CLINICAL EFFECTS: Simultaneous administration or administration of products containing aluminum, calcium, iron, magnesium, and/or sucralfate may result in decreased levels and effectiveness of elvitegravir, as well as the development of resistance.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Separate the administration of elvitegravir and products containing aluminum, calcium, iron, magnesium, and/or sucralfate by at least 2 hours.(1) Some vitamin preparations may contain sufficient quantities of calcium and/or magnesium salts with antacid properties to interact as well. DISCUSSION: Administration of an antacid (exact formulation not stated) 2 hours before elvitegravir (50 mg) decreased the maximum concentration (Cmax), area-under-curve (AUC), or minimum concentration (Cmin) of elvitegravir by 18%, 15%, and 10%, respectively.(1) Administration of an antacid 2 hours after elvitegravir (50 mg) decreased the Cmax, AUC, or Cmin of elvitegravir by 21%, 20%, and 20%, respectively.(1) Administration of an antacid 4 hours before elvitegravir (50 mg) decreased the Cmax and AUC of elvitegravir by 5%, and 4%, respectively.(1) Administration of an antacid 4 hours before elvitegravir (50 mg) decreased both the Cmax and AUC of elvitegravir by 2%.(1) |
GENVOYA, STRIBILD |
Dolutegravir/Selected Oral Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Aluminum, calcium, iron, lanthanum, magnesium, sucralfate, and zinc may form chelation compounds with dolutegravir.(1) CLINICAL EFFECTS: Simultaneous administration or administration of products containing aluminum, calcium, iron, lanthanum, magnesium, and/or sucralfate close to the administration time of dolutegravir may result in decreased absorption and clinical effectiveness of dolutegravir.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: If possible, avoid concurrent therapy with dolutegravir and cation-containing products. If it is necessary to use these agents concurrently, dolutegravir should be administered 2 hours before or 6 hours after taking these medications.(1) Alternatively, dolutegravir and supplements containing calcium or iron can be taken together with food.(1) DISCUSSION: In a study in 16 subjects, the administration of an antacid (Maalox - aluminum and magnesium hydroxide) simultaneously with dolutegravir (50 mg single dose) decreased the maximum concentration (Cmax), area-under-curve (AUC), and minimum concentration (Cmin) of dolutegravir by 72%, 74%, and 74%, respectively.(1) In a study in 16 subjects, the administration of an antacid (Maalox - aluminum and magnesium hydroxide) 2 hours after dolutegravir (50 mg single dose) decreased dolutegravir Cmax, AUC, and Cmin by 18%, 26%, and 30%, respectively.(1) In a study in 16 subjects, the administration of a multiple vitamin (One-A-Day) simultaneously with dolutegravir (50 mg single dose) decreased dolutegravir Cmax, AUC, and Cmin by 35%, 33%, and 32%, respectively.(1) |
DOVATO, TIVICAY, TIVICAY PD, TRIUMEQ, TRIUMEQ PD |
Oral Methyldopa/Oral Iron SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Iron, in several forms, binds strongly to methyldopa, producing iron complexes thereby reducing methyldopa absorption. CLINICAL EFFECTS: Concomitant use of methyldopa with iron supplementation may decrease the clinical efficacy of methyldopa. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients requiring iron supplementation should be advised to take methyldopa two hours prior to any iron products. DISCUSSION: In a randomized crossover trial with 12 subjects, concurrent use of methyldopa (500 mg daily) and ferrous sulfate (325 mg daily) showed a 28.4% decrease in the proportion of "free" methyldopa (p<0.01), a 28% increase in the proportion excreted as methyldopa sulfate (p<0.01), and a 21.2% decrease in total absorbed methyldopa (p<0.01). Similar results were found when administering ferrous gluconate (600 mg daily). Antihypertensive effects of methyldopa while taking ferrous sulfate were also assessed in five patients chronically taking methyldopa. All participants showed an increase in systolic blood pressure (p=0.03) after two weeks of ferrous sulfate administration. Diastolic blood pressure increased in four patients (p>0.05). After 14 days, three patients had an increase in systolic pressure greater than 15 mm Hg and two patients had an increase of greater than 10 mm Hg in diastolic blood pressures. Both systolic and diastolic pressures decreased after ferrous sulfate was discontinued.(2) |
METHYLDOPA, METHYLDOPA-HYDROCHLOROTHIAZIDE |
Ethyl Alcohol/Varenicline SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: The mechanism of this interaction has not been described. CLINICAL EFFECTS: Concurrent use of varenicline and alcohol-containing products may result in increased intoxicating effects of alcohol, aggressive behavior and/or amnesia.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients should be advised that varenicline can change the way they react to alcohol. Case reports have described decreased alcohol tolerance, sometimes associated with aggressive behavior and/or amnesia with alcohol consumption which was previously tolerated. Patients and providers should be aware of unsuspected sources of alcohol such as medications. Reduce the use of non-essential alcohol containing drugs (e.g. cough and cold products) when possible. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (2): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation - For comparison, the US National Institute on Alcohol Abuse and Alcoholism definition of a Standard Drink (e.g. 12oz of 5% beer, 5oz of 12% wine) contains 14 grams of alcohol. DISCUSSION: A search of the FDA Adverse Event Reporting System (FAERS) identified 48 cases of adverse events due to the combination of varenicline and alcohol.(1) Aggressive behavior was described in 37 cases. In these cases, the amount of alcohol consumed was insufficient to explain the event. More than half of the patients involved described their behavior as a significant change from their behavior prior to varenicline treatment. In 16 of the 37 cases, patients reported no or impaired memory of the event; most of these cases were also associated with physical harm to a person and/or property. Decreased alcohol tolerance was observed in 11 cases in patients who consumed quantities of alcohol which previously did not cause adverse effects. Outcomes included an automobile accident leading to arrest and a significant facial injury. Most of the patients in these cases described poor memory of their experience. |
CHANTIX, VARENICLINE TARTRATE |
Dolutegravir-Rilpivirine/Selected Oral Cations; Antacids; H2 Antagonists SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Aluminum, calcium, iron, lanthanum, magnesium, sucralfate, and zinc may form chelation compounds with dolutegravir.(1) Rilpivirine requires an acidic medium for absorption. Antacid or H2 antagonist induced decrease in gastric pH may result in decrease in rilpivirine absorption.(1) CLINICAL EFFECTS: Simultaneous administration or administration of products containing aluminum, calcium, iron, lanthanum, magnesium, and/or sucralfate close to the administration time of dolutegravir may result in decreased absorption and clinical effectiveness of dolutegravir.(1) Simultaneous administration of an antacid or a H2 antagonist may result in decreased levels and effectiveness of rilpivirine, as well as the development of resistance.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: If possible, avoid concurrent therapy with dolutegravir-rilpivirine and cation-containing products. If it is necessary to use these agents concurrently, dolutegravir-rilpivirine should be administered 4 hours before or 6 hours after taking these medications.(1) Alternatively, dolutegravir-rilpivirine and supplements containing calcium or iron can be taken together with food.(1) In patients maintained on dolutegravir-rilpivirine, administer dolutegravir-rilpivirine at least 4 hours before or 6 hours after antacids .(1) In patients maintained on dolutegravir-rilpivirine, administer dolutegravir-rilpivirine at least 4 hours before or 12 hours after H2 antagonists.(1) Concurrent use of proton pump inhibitors will dolutegravir-rilpivirine is contraindicated.(1) DISCUSSION: In a study in 16 subjects, the administration of an antacid (Maalox - aluminum and magnesium hydroxide) simultaneously with dolutegravir (50 mg single dose) decreased the maximum concentration (Cmax), area-under-curve (AUC), and minimum concentration (Cmin) of dolutegravir by 72%, 74%, and 74%, respectively.(1) In a study in 16 subjects, the administration of an antacid (Maalox - aluminum and magnesium hydroxide) 2 hours after dolutegravir (50 mg single dose) decreased dolutegravir Cmax, AUC, and Cmin by 18%, 26%, and 30%, respectively.(1) In a study in 16 subjects, the administration of a multiple vitamin (One-A-Day) simultaneously with dolutegravir (50 mg single dose) decreased dolutegravir Cmax, AUC, and Cmin by 35%, 33%, and 32%, respectively.(1) In a study in 16 subjects, omeprazole (20 mg daily) decreased the Cmax, AUC, and Cmin of rilpivirine (150 mg daily) by 40%, 40%, and 33%, respectively. The Cmax and AUC of omeprazole decreased by 14% and 14%, respectively.(1) In a study in 24 subjects, famotidine (40 mg single dose) administered 12 hours before a single dose of rilpivirine (150 mg) had no significant effect on rilpivirine Cmax or AUC.(1) In a study in 23 subjects, famotidine (40 mg single dose) administered 2 hours before a single dose of rilpivirine (150 mg) decreased the rilpivirine Cmax and AUC by 85% and 76%, respectively.(1) In a study in 24 subjects, famotidine (40 mg single dose) administered 4 hours before a single dose of rilpivirine (150 mg) increased the rilpivirine Cmax and AUC by 21% and 13%, respectively.(1) |
JULUCA |
Bictegravir/Calcium & Iron Containing Supplements SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Calcium or iron containing supplements may bind to bictegravir in the GI tract, preventing its absorption.(1) CLINICAL EFFECTS: Calcium or iron containing supplements may reduce levels and clinical effectiveness of bictegravir.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Bictegravir and calcium or iron containing supplements may be taken together with food. Routine administration of bictegravir under fasting conditions simultaneously with, or within 2 hours after, calcium or iron containing supplements is not recommended.(1) In pregnant patients, if bictegravir is taken on an empty stomach, take bictegravir at least 2 hours before or 6 hours after calcium or iron containing supplements.(1) DISCUSSION: Simultaneous administration of aluminum and magnesium hydroxide (20 ml) in a fasted state with bictegravir (50 mg single dose) decreased bictegravir maximum concentration (Cmax) and area-under-curve (AUC) by 80% and 79%, respectively.(1) Administration of aluminum and magnesium hydroxide (20 ml) 2 hours after bictegravir (50 mg single dose) in a fasted state decreased bictegravir Cmax and AUC by 7% and 13%, respectively.(1) Administration of aluminum and magnesium hydroxide (20 ml) 2 hours before bictegravir (50 mg single dose) in a fasted state decreased bictegravir Cmax and AUC by 58% and 52%, respectively.(1) Simultaneous administration of aluminum and magnesium hydroxide (20 ml) in a fed state with bictegravir (50 mg single dose) decreased bictegravir Cmax and AUC by 49% and 47%, respectively.(1) Simultaneous administration of calcium carbonate (1200 mg single dose) in a fasted state with bictegravir (50 mg single dose) decreased bictegravir Cmax and AUC by 42% and 33%, respectively.(1) Simultaneous administration of calcium carbonate (1200 mg single dose) in a fed state with bictegravir (50 mg single dose) decreased bictegravir Cmax by 10% and increased AUC 3%, respectively.(1) Simultaneous administration of ferrous fumarate (324 mg single dose) in a fasted state with bictegravir (50 mg single dose) decreased bictegravir Cmax and AUC by 71% and 63%, respectively.(1) Simultaneous administration of ferrous fumarate (324 mg single dose) in a fed state with bictegravir (50 mg single dose) decreased bictegravir Cmax and AUC by 25% and 16%, respectively.(1) |
BIKTARVY |
Baloxavir/Polyvalent Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Aluminum, calcium, iron, magnesium, selenium, and zinc may form chelation compounds with baloxavir.(1) CLINICAL EFFECTS: Simultaneous administration of products containing aluminum, calcium, iron, magnesium, selenium, and zinc may result in decreased levels of and clinical effects from baloxavir.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Avoid concurrent administration of baloxavir with cation-containing products.(1) DISCUSSION: A significant decrease in baloxavir exposure was observed when baloxavir was coadministered with calcium, aluminum, magnesium, or iron in monkeys. No studies have been conducted in humans.(1) |
XOFLUZA |
Apomorphine/Alcohol SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Apomorphine is associated with hypotension or syncopal episodes. High doses of alcohol (0.6 gram/kg) may increase the levels of apomorphine.(1) CLINICAL EFFECTS: Concurrent use of alcohol in patients taking apomorphine may substantially increase the risk for hypotension or syncope.(1) PREDISPOSING FACTORS: The risk of orthostatic hypotension may be increased during dose escalation of apomorphine and in renal and hepatic impairment. PATIENT MANAGEMENT: Counsel patients to avoid alcohol while using apomorphine due to the increased risk of hypotension.(1) Significant quantities of alcohol may be present in medicinal products. Alcohol is is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (3): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Healthy volunteers who had high dose ethanol (0.6 gram/kg, or 3 standardized alcoholic beverages) concomitantly with apomorphine experienced a mean largest decrease in supine systolic blood pressure (SBP) of 9.1 mm Hg and in supine diastolic blood pressure (DBP) of 10.5 mm Hg, and a mean largest decrease in standing SBP and DBP of 11.3 mm Hg and 12.6 mm Hg, respectively. The maximum decrease in SBP and DBP was 61 mm Hg and 51 mm Hg, respectively. With low dose ethanol (0.3 gram/kg), a mean largest decrease in supine SBP and DBP of 10.2 mm Hg and 9.9 mm Hg, respectively, and in standing SBP and DBP of 8.4 mm Hg and 7.1 mm Hg were seen. 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. High dose ethanol increased the maximum concentration (Cmax) of apomorphine by 63 %. Low dose ethanol did not significantly affect the pharmacokinetics of apomorphine. However, an increase in the hypotensive effect of apomorphine was still noted, as described above.(1) |
APOKYN, APOMORPHINE HCL, ONAPGO |
Tiopronin (Enteric-Coated)/Alcohol SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Alcohol may result in a faster release of delayed-release tiopronin.(1) CLINICAL EFFECTS: Concurrent use of alcohol in patients taking delayed-release tiopronin may increase the risk of side effects.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Counsel patients to avoid alcohol 2 hours before and 3 hours after taking delayed-release tiopronin.(1) Significant quantities of alcohol may be present in medicinal products. Alcohol is is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (3): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: An in vitro study found that alcohol (5, 10, 20, and 40 %) increased the dissolution rate of delayed-release tiopronin tablets.(1) |
THIOLA EC, TIOPRONIN, VENXXIVA |
Trientine/Iron Salts, Oral SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Trientine is a chelating agent. Concurrent administration with iron may reduce the absorption of both trientine and iron. CLINICAL EFFECTS: Iron may decrease the levels and clinical effects of trientine, and trientine may reduce serum iron levels. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Avoid use of iron salts within 2 hours of trientine dose. Monitor clinical status for decreased effectiveness and adjust the trientine dose if necessary. DISCUSSION: Multivitamins with low doses of iron may decrease trientine absorption so ensure patient is aware of the risks. Also, as patients may be unaware which foods contain iron, instruct patients to take trientine on an empty stomach, at least one hour before meals or two hours after food or milk. |
CUVRIOR, SYPRINE, TRIENTINE HCL |
Entacapone/Oral Iron Supplements SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Entacapone may chelate with iron within the gastrointestinal tract, reducing the absorption of both drugs. CLINICAL EFFECTS: Simultaneous administration of entacapone and orally administered iron may decrease the clinical effects of both medications. PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Iron supplements should not be taken within 2-3 hours before or after entacapone to minimize the effects of this interaction.(1) Some multivitamin preparations that contain sufficient quantities of iron may interact and not be properly absorbed as well. DISCUSSION: Entacapone may form chelates with iron in the gastrointestinal tract, and preparations should be taken at least 2-3 hours apart.(1) Although the impact on the body's iron stores is unknown, clinical studies showed decreasing serum iron concentrations with coadministration of entacapone.(2) In repeated dose toxicity studies, anemia was observed most likely due to the iron chelating properties of entacapone.(1) Prescribing information of entacapone/levodopa/carbidopa states chelation of entacapone with iron may decrease bioavailability of entacapone/levodopa/carbidopa.(3) |
CARBIDOPA-LEVODOPA-ENTACAPONE, ENTACAPONE |
Cabotegravir/Polyvalent Cations SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Cabotegravir chelates polyvalent cations such as aluminum, calcium, iron, magnesium, selenium, and zinc.(1) CLINICAL EFFECTS: Simultaneous administration of cabotegravir and polyvalent cations may decrease the absorption and clinical effects of cabotegravir.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The US manufacturer of cabotegravir states that it should be administered at least 2 hours before or 4 hours after any medications or products containing polyvalent cations such as antacids or mineral supplements.(1) DISCUSSION: Clinical studies have not been conducted. Prescribing information states cabotegravir levels may be decreased when coadministered with antacids containing polyvalent cations (examples include aluminum or magnesium hydroxide, calcium carbonate) suggesting cabotegravir is susceptible to chelation.(1) |
VOCABRIA |
Secnidazole/Alcohol; Propylene Glycol SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Alcohol and propylene glycol may potentiate the adverse effects of secnidazole.(1) CLINICAL EFFECTS: Concurrent use of alcohol or preparations containing ethanol or propylene glycol in patients taking secnidazole may increase the risk of side effects, including nausea, vomiting, diarrhea, abdominal pain, headache and dizziness.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Counsel patients to avoid alcohol and preparations containing ethanol or propylene glycol until at least 2 days after completing therapy with secnidazole.(1) Significant quantities of alcohol may be present in medicinal products. Alcohol is is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (3): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: In vitro studies showed that secnidazole had no effect on aldehyde dehydrogenase activity. However, postmarketing observations of adverse reactions of nausea, vomiting, diarrhea, abdominal pain, dizziness, and headache with concomitant use of secnidazole and alcohol have been reported.(1) |
SOLOSEC |
Ethyl Alcohol/Levoketoconazole; Ketoconazole SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: The exact mechanism of action of this reaction is unknown. Like metronidazole, ketoconazole contains a methylated imidazole ring. Due to their structural similarity, it has been suggested that alcohol dehydrogenase inhibition like that caused by metronidazole may occur.(1) Levoketoconazole is an enantiomer of ketoconazole.(2) CLINICAL EFFECTS: Concurrent use of ketoconazole with alcohol has been associated with a disulfiram-like reaction resulting in symptoms of flushing, rash, peripheral edema, nausea, and headache. Symptoms generally resolve within a few hours.(2,3) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: Patients receiving levoketoconazole or ketoconazole should be instructed to use caution if drinking alcohol and to avoid excessive alcohol while taking levoketoconazole or ketoconazole.(2,3) Patients should be advised of the possible affects that may result from ingestion or application of products that contain alcohol while taking levoketoconazole or ketoconazole. Caution is also warranted when using intravenous preparations containing alcohol solvents in patients receiving levoketoconazole or ketoconazole. Alcohol is used to improve docetaxel and paclitaxel solubility. - The quantity of alcohol in paclitaxel injection formulations (0.385-0.396 grams/mL) is similar across manufacturers. A paclitaxel 200 mg dose contains approximately 13 grams of alcohol. - The quantity of alcohol in docetaxel formulations varies approximately 3-fold depending upon the manufacturer. FDA data on alcohol content (4): Product Manufacturer Alcohol/200 mg dose Docetaxel Inj. Pfizer 6.4 grams Docetaxel Inj. Sandoz 5.5 grams Docetaxel Inj. Accord 4.0 grams Taxotere-one vial Sanofi 4.0 grams formulation Docetaxel Inj. Hospira 3.7 grams Docefrez Sun Pharma 2.9 grams Taxotere-two vial Sanofi 2.0 grams formulation DISCUSSION: Ketoconazole has been associated with disulfiram-like reactions in patients who used alcohol. An 82-year old male with a history of alcohol abuse received a 1-week course of ketoconazole for esophageal candidiasis and had symptoms of nausea, vomiting and facial flushing. These symptoms were assumed to be due to alcohol ingestion.(1) |
KETOCONAZOLE, RECORLEV |
Vadadustat/Polyvalent Cations and Phosphate Binders SEVERITY LEVEL: 3-Moderate Interaction: Assess the risk to the patient and take action as needed. MECHANISM OF ACTION: Vadadustat may form a chelate with iron supplements, phosphate binders, and other medicinal products whose primary component consists of polyvalent cations such as aluminum, calcium, magnesium, selenium, and zinc.(1) CLINICAL EFFECTS: Simultaneous administration of vadadustat and polyvalent cations and phosphate binders decreases the exposure and effectiveness of vadadustat.(1) PREDISPOSING FACTORS: None determined. PATIENT MANAGEMENT: The manufacturer of vadadustat states that it should be administered at least 1 hour before or 2 hours after any medications or products whose primary component consists of iron, phosphate binders and polyvalent cations.(1) DISCUSSION: Two studies evaluating the pharmacokinetics, safety, and tolerability of a single oral dose of vadadustat coadministered with a phosphate binder or iron supplement were conducted in healthy adult participants. Vadadustat exposure was reduced by coadministration with sevelamer carbonate, calcium acetate, ferric citrate, and ferrous sulfate. Geometric least squares mean ratios for area under the concentration-time curve (AUC) were reduced 37% to 55% by phosphate binders and 46% by ferrous sulfate. However, when vadadustat was administered 1 hour before phosphate binders, 90% confidence intervals for vadadustat exposure were within the no-effect boundaries of +50% to -33%, indicating that drug-drug interactions can be reduced by administering vadadustat 1 hour before phosphate binders.(2) |
VAFSEO |
The following contraindication information is available for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs):
Drug contraindication overview.
No enhanced Contraindications information available for this drug.
No enhanced Contraindications information available for this drug.
There are 5 contraindications.
Absolute contraindication.
Contraindication List |
---|
Diabetic coma |
Hemochromatosis |
Pregnancy |
Seizure disorder |
Urinary tract infection |
There are 20 severe contraindications.
Adequate patient monitoring is recommended for safer drug use.
Severe List |
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Alcohol use disorder |
Cardiac arrhythmia |
Chronic heart failure |
Chronic iron overload due to repeated blood transfusions |
Diabetes mellitus |
Disease of liver |
Diverticular disease |
Esophageal dysmotility |
Hemolytic anemia |
Hemosiderosis |
Hypertension |
Hypokalemia |
Invasive procedure on brain |
Metabolic acidosis |
Porphyria |
Postpartum hemorrhage |
Retinal vascular occlusion |
Severe renal impairment |
Shock |
Ulcerative colitis |
There are 6 moderate contraindications.
Clinically significant contraindication, where the condition can be managed or treated before the drug may be given safely.
Moderate List |
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Coronary artery disease |
Disease of liver |
Edema |
Hypotension |
Kidney disease with reduction in glomerular filtration rate (GFr) |
Peptic ulcer |
The following adverse reaction information is available for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs):
Adverse reaction overview.
No enhanced Common Adverse Effects information available for this drug.
No enhanced Common Adverse Effects information available for this drug.
There are 10 severe adverse reactions.
More Frequent | Less Frequent |
---|---|
None. | None. |
Rare/Very Rare |
---|
Ataxia Cardiac arrest Encephalopathy Hypertension Hypertonia Hypokalemia Muscle weakness in lower extremities Rhabdomyolysis Ventricular fibrillation Ventricular tachycardia |
There are 18 less severe adverse reactions.
More Frequent | Less Frequent |
---|---|
Black stools Constipation Diarrhea Flatulence Nausea |
Abdominal distension Acute abdominal pain Vomiting |
Rare/Very Rare |
---|
Altered mental status Amenorrhea Headache disorder Lethargy Muscle weakness Myalgia Nausea Pseudoaldosteronism Vomiting Weight loss |
The following precautions are available for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs):
No enhanced Pediatric Use information available for this drug.
Contraindicated
Severe Precaution
Management or Monitoring Precaution
Contraindicated
None |
Severe Precaution
None |
Management or Monitoring Precaution
None |
During the first and second trimester of pregnancy, iron-deficiency anemia is associated with a twofold increased risk of premature delivery and a threefold increased risk of a low-birthweight delivery. Although iron supplementation during pregnancy has been shown to decrease the incidence of anemia, evidence on the effect of routine iron supplementation during pregnancy on adverse maternal and infant outcomes is inconclusive. Blood volume expands by about 35% during pregnancy, and growth of the fetus, placenta, and other maternal tissues increases the iron requirement threefold during the second and third trimesters of pregnancy to about 5 mg of iron daily.
Although menstruation ceases and iron absorption increases during pregnancy, most pregnant women who do not use iron supplements to meet increased iron requirements cannot maintain adequate iron stores, particularly during the last 2 trimesters. Following delivery, iron in the fetus and placenta are lost to the woman, although some of the iron in the expanded blood volume may return to blood stores. Among low-income pregnant women enrolled in health programs in the US, the prevalence of iron-deficiency anemia is 9, 14, and 37% during the first, second, and third trimesters, respectively.
While similar data currently are not available for all pregnant women in the US, the low dietary iron intake among US women of childbearing age, the high prevalence of iron deficiency and associated anemia among such women, and the increased iron requirements during pregnancy suggest that anemia during pregnancy may extend beyond low-income women. In addition, use of prenatal multivitamin and mineral supplements among African-Americans, native American and Alaskan Indians, women younger than 20 years of age, and those having less than a high school education is substantially lower than in the general US pregnant population. The principal reasons for the current lack of widespread adoption of a recommended iron supplementation regimen during pregnancy in US women may include lack of health-care provider and patient perceptions that iron supplements improve maternal and infant outcomes, complicated dose schedules, and adverse effects (e.g., constipation, nausea, vomiting).
However, adequate dietary iron intake and iron supplementation generally are recommended for primary prevention of iron deficiency during pregnancy. By employing low-dose (i.e., 30 mg of iron daily) regimens with simplified dose schedules (i.e., once-daily dosing), patient compliance may be improved; low-dose regimens have been shown to increase patient tolerance and are as effective as higher dosages (e.g., 60-120 mg iron daily) in preventing iron-deficiency anemia.
Although menstruation ceases and iron absorption increases during pregnancy, most pregnant women who do not use iron supplements to meet increased iron requirements cannot maintain adequate iron stores, particularly during the last 2 trimesters. Following delivery, iron in the fetus and placenta are lost to the woman, although some of the iron in the expanded blood volume may return to blood stores. Among low-income pregnant women enrolled in health programs in the US, the prevalence of iron-deficiency anemia is 9, 14, and 37% during the first, second, and third trimesters, respectively.
While similar data currently are not available for all pregnant women in the US, the low dietary iron intake among US women of childbearing age, the high prevalence of iron deficiency and associated anemia among such women, and the increased iron requirements during pregnancy suggest that anemia during pregnancy may extend beyond low-income women. In addition, use of prenatal multivitamin and mineral supplements among African-Americans, native American and Alaskan Indians, women younger than 20 years of age, and those having less than a high school education is substantially lower than in the general US pregnant population. The principal reasons for the current lack of widespread adoption of a recommended iron supplementation regimen during pregnancy in US women may include lack of health-care provider and patient perceptions that iron supplements improve maternal and infant outcomes, complicated dose schedules, and adverse effects (e.g., constipation, nausea, vomiting).
However, adequate dietary iron intake and iron supplementation generally are recommended for primary prevention of iron deficiency during pregnancy. By employing low-dose (i.e., 30 mg of iron daily) regimens with simplified dose schedules (i.e., once-daily dosing), patient compliance may be improved; low-dose regimens have been shown to increase patient tolerance and are as effective as higher dosages (e.g., 60-120 mg iron daily) in preventing iron-deficiency anemia.
No enhanced Lactation information available for this drug.
No enhanced Geriatric Use information available for this drug.
The following prioritized warning is available for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs):
No warning message for this drug.
No warning message for this drug.
The following icd codes are available for LYDIA PINKHAM HERBAL (ethyl alcohol/herbal drugs)'s list of indications:
No ICD codes found for this drug.
No ICD codes found for this drug.
Formulary Reference Tool