Tell your doctor about all medicines you use, and those you start or stop using during your treatment with Yaz, especially:
medications for hepatitis C;
seizure medications (including phenytoin, phenobarbital, carbamazepine, topiramate, oxcarbazepine, primidone, felbamate, and others);
rifampicin;
antifungal medications including griseofulvin, ketoconazole, itraconzaole, voriconazole, fluconazole, others);
antibiotics (including tetracycline, minocycline, ampicillin, others);
blood pressure medications (including lisinopril, captopril, enalapril, valsartan, losartan, others);
diuretics or water pills including spironolactone (Aldactone);
blood thinners such as heparin or enoxaparin (Lovenox);
potassium supplements;
chronic use of NSAID pain medications (like acetaminophen, ibuprofen, naproxen, others); or
St. John’s wort.
This list is not complete. Other drugs may interact with Yaz, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.
Some drugs can make this medicine less effective, which may result in pregnancy. Tell your doctor about all your current medicines and any medicine you start or stop using.
 Yaz drug interactions (more detail)
