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Brand names: Viagra, Revatio

Generic names: Sildenafil citrate

Viagra is a highly efficient medication used to improve sexual performance of males suffering from erectile dysfunction. Before taking this drug make sure you go though a complete health assessment – this way you will know what your exact diagnosis is, and the dosage your doctor prescribes will be effective for you. The right dosage is very important because if you take less you will not feel the effects of Viagra, while taking more can cause serious side effects and lead to health complications. This is the reason why you are not supposed to share this medicine with other people – it’s best for their health to check with their own doctor before taking Viagra.

Tell your doctor about using any of the following drugs, as they can interfere with Viagra: antibiotics (clotrimazole, clarithromycin, erythromycin, ketoconazole, or voriconazole), antidepressants (nefazodone), cimetidine, diclofenac, HIV/AIDS medicine, conivaptan, bosentan, rifampin, enoxacin, isoniazid, heart or blood pressure medication (diltiazen, doxazosin, nicardipine). One of the rare but serious Viagra side effects is sudden vision loss. While the scientists are not completely certain about whether this condition is caused by taking Viagra per se, in most cases it’s reported by people who are regular smokers, and those older than 50, with high blood pressure and cholesterol. Patients with pre-existing eye problems also have a higher risk of developing sudden vision loss.