Viagra is the first FDA approved oral drug for male impotence.Sildenafil Citrate is the active ingredient used to treat erectile dysfunction (impotence) in men. It can help men who have erectile dysfunction get and sustain an erection when they are sexually excited.Sexual health is an important part of any man's life and impotence can prove to be a great hindrance to achieving a healthy lifestyle. Sildenafil Citrate and its many different presentations can help you get back to being yourself, regain confidence and take control of your life.The active ingredient contained on these medications, Sildenafil Citrate, is exactly the same found in brand name Viagra. It works the same and lasts just as long, that is why generic Sildenafil Citrate is considered a bioequivalent of Viagra.