Sildenafil functions by relaxing the muscular tissues in the penis and allowing more blood in to the cells.
To see to it this medication works as it should, see to it you take your dose of Sildenafil 30-40 minutes before making love with some food or a glass of water.
These feature alpha blockers (alfuzosin, doxazosin, tamsulosin), barbiturates, blood thinners (warfarin), 'beta' blockers (atenolol, propranolol, metoprolol), antifungals (ketoconazole), HIV protease preventions, seizure medications (carbamazepine, phenytoin, phenobarbital), hypertension medications, or other medicines planned for the treatment of impotence, and also rifabutin, rifampin erythromycin, cimetidine, bosentan or efavirenz.
In some unusual instances people taking Sildenafil could experience the alleged "cardiac signs", which include nausea, tingling, and breast discomfort.