التداخل بين ريفامبيسين وفيراباميل

…non-hormonal methods of birth control during rifampin therapy Estrogens Decrease exposure Progestins Anticonvulsants Phenytoin Administered with rifampin 450 mg daily Decrease exposure Antiarrhythmics Disopyramide Decrease exposure Mexiletine Decrease exposure Quinidine Decrease exposure Propafenone Decrease AUC by 50%-67% Tocainide Decrease exposure Antiestrogens…

…exposure Benzodiazepines Diazepam , Administered with rifampin 1200 mg daily Decrease exposure Benzodiazepine-related drugs Zopiclone Decrease AUC by 82% Zolpidem Decrease AUC by 73% Calcium Channel Blockers Diltiazem Decrease exposure Nifedipine Rifampin 1200 mg administered as a single oral dose 8 hours before administering a single oral dose of nifedipine 10…

Rifampin Therapy with rifampin may markedly reduce oral verapamil bioavailability.

CYP3A4 inducers decrease verapamil levels ( 7.1 )

Inducers of CYP3A4 (e.g., rifampin) have caused a lowering of plasma levels of verapamil.