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Drug Interactions between boceprevir and Razadyne ER

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

galantamine boceprevir

Applies to: Razadyne ER (galantamine) and boceprevir

MONITOR: Coadministration with potent inhibitors of CYP450 3A4 may increase the plasma concentrations of galantamine, which is partially metabolized by the isoenzyme. In multiple dose pharmacokinetic studies, a potent CYP450 3A4 inhibitor such as ketoconazole has been shown to increase galantamine systemic exposure (AUC) by 30%. Erythromycin and cimetidine, which are less potent inhibitors, have been shown to increase galantamine AUC by 10% and 16%, respectively.

MANAGEMENT: Pharmacologic response to galantamine should be monitored more closely whenever a potent CYP450 3A4 inhibitor (e.g., clarithromycin, telithromycin, itraconazole, ketoconazole, posaconazole, voriconazole, conivaptan, nefazodone, cobicistat, delavirdine, protease inhibitors) is added to or withdrawn from therapy, and the galantamine dosage adjusted as necessary. Patients should be advised to notify their physician if they experience excessive cholinergic symptoms such as severe nausea, vomiting, GI cramping, salivation, lacrimation, sweating, dizziness, or syncope.

References

  1. "Product Information. Reminyl (galantamine)." Janssen Pharmaceuticals PROD (2001):

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Drug and food interactions

Moderate

boceprevir food

Applies to: boceprevir

ADJUST DOSING INTERVAL: Food significantly enhances the oral bioavailability of boceprevir. When given at 800 mg three times daily with food, boceprevir exposure increased by up to 65% relative to administration in the fasting state. The bioavailability of boceprevir was similar regardless of meal type (e.g., high-fat versus low-fat) or whether taken 5 minutes prior to eating, during a meal, or immediately following completion of the meal. Therefore, boceprevir may be taken without regard to either meal type or timing of the meal.

MANAGEMENT: To ensure maximal oral absorption, boceprevir should be administered with a meal or light snack.

References

  1. "Product Information. Victrelis (boceprevir)." Schering-Plough Corporation (2011):

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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

See also

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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