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Viagra Drug Interactions

Tell your doctor of all nonprescription and prescription medication you may use, especially nitrate medications (e.g., nitroglycerin, isosorbide dinitrate), nitroprusside (any "nitric oxide donor" medicines), cimetidine (Tagamet), erythromycin, azole, antifungals (e.g., itraconazole, ketoconazole), mibefradil, rifamycins (e.g., rifampin), high blood pressure medicines and certain HIV protease inhibitors (such as saquinavir, ritonavir, amprenavir). It is especially important to check with your doctor before combining Viagra with other impotence remedies including Caverject and Muse. Do not start or stop any medicine without doctor or pharmacist approval.