DRUG INTERACTIONS: Inform your doctor about all the medicine you use (both prescription and nonprescription) especially if you take: "blood thinners" (warfarin), cimetidine, omeprazole, sucralfate, disulfiram, oral antifungal medication (azoles), xanthine drugs to treat asthma (theophylline), isoniazid, folic acid, pyrimethamine, sulfa antibiotics, rifamycins (e.g., rifabutin, rifampin), trimethoprim, amiodarone, fluoxetine, anti-cancer drugs, valproic acid, divalproex, estrogens, disopyramide, levodopa (Sinemet), digoxin, felodipine, primidone, felbamate, narcotic pain medicines (e.g., codeine), St John's wort, capecitabine. This drug may interfere with the effectiveness of birth control pills. Discuss using other methods of birth control with your doctor. Do not start or stop any medicine without doctor or pharmacist approval.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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