
Revatio (Sildenafil) is a medicinal drug that is used to treat ED (erectile dysfunctio) in men such as impotence (inability to get or keep an erection). Revatio (Revatio) is used to improve the ability to exercise in people with pulmonary arterial hypertension. Revatio is in a class of medications called phosphodiesterase inhibitors. Revatio treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. Revatio treats pulmonary arterial hypertension by relaxing the blood vessels in the lungs to allow blood to flow easily.