Penegra is the generic drug that effectively treats the problem of impotence in men Sildenafil citrate, the main component of this drug, cures the abnormal functioning of the male reproductive system by increasing the blood supply to the male reproductive organ. Men by allowing them to achieve the steady state of the male reproductive organ and during sexual intercourse. The importance of this drug is that it treats impotence regardless of the cause and age of the man. It is the impotence pill that prevents impotence from occurring. Providing the sufficient amount of blood necessary for the harsh condition of the male reproductive system.