Tell your medical professional if you are presently utilizing HIV protease inhibitors, cimetidine, various other medicines for impotence, azole antifungals, alpha-blocker medicines, erythromycin, high blood pressure medicines, mibefradil, or rifamycin, as there is a possibility you might be taking a lower amount of Viagra to make certain it's secure for you and is not going to cause any kind of side results or interact with various other products you are utilizing.