Zenegra is a reliable and effective medication for handling erectile dysfunction (ED) or impotency. In fact, it is one of the generic derivatives of Viagra with an active drug of Sildenafil Citrate. In ED, a man fails to attain an erection due to inadequate blood flow in the penile organ. Zenegra restores the sexual health by augmenting the blood flow in and around the penile organ to increase the sensitivity and promote erection.