Viagra 100 MG Tablet is a prescription tablet mainly used by men to treat the sexual problem of erectile dysfunction (ED). It is a phosphodiesterase type 5 inhibitor that relaxes and dilates the blood vessels to increase the blood flow in the penis.

Sildenafil Revatio generic Enagraa (100 mg) is a phosphodiesterase type 5 (PDE5) inhibitor, prescribed for erectile dysfunction (impotence). Erectile dysfunction is the inability to achieve or maintain an erection long enough to perform intercourse. It relaxes the blood vessels in the penis, allowing more blood to enter to achieve an erection. It can also be used in pulmonary arterial hypertension.