Viagra, the little blue pill made by the pharmaceutical company Pfizer Inc., became the first drug approved for male impotence of the United States Food and Drug Administration. Its adoption in March 1998 unleashed a global demand and rising stocks sent Pfizer. Hardly a day went by when newspapers, radio and television had no news of the Buy viagra online craze. The pill, which is sold by prescription for each about $ 10 retail, was taken by men with sexual problems about an hour before it is expected to have sexual activity. ...