Impotence or, more clinically, erectile dysfunction is the inability to maintain an erection of the penis for satisfactory sexual intercourse regardless of the capability of ejaculation. Unfortunately the facts about this subject have often become intertwined with sensational advertising. In the 1930s the American radio airwaves were bombarded with such advertising, first from domestic stations and then upon action by the American Medical Association the media blitz was shifted to superpower Mexican border-blasters. Today the television airwaves are awash with commercials for products such as Enzyte; Viagra, Cialis and Levitra which all in one way or another claim to cure the same problem of impotence.