Sildenafil is often sold under the brand name Viagra among others. It is used to treat erectile dysfunction and pulmonary arterial hypertension. Sildenafil enables an erection sufficient for sexual intercourse by enhancing the effect of nitric oxide, a chemical that relaxes smooth muscles in the penis during sexual stimulation, allowing increased blood flow. The growing awareness about treating erectile dysfunction and benefits of using pharmaceutical drugs has boosted the growth of ... Read more
