There is breaking news from Italy and the United States that the World Anti Doping Agency, (and several universities), is looking into the possibility that Viagra, sildenafil citrate, might be a performance enhancing drug in sporting terms as well as in bed.  The theory is that the drug’s ability to increase the blood flow may help enhance performance in situations like altitude, which can cause oxygen deficiency.  The increased blood flow may also deliver more of the bodies own performance enhancers to muscles thereby improving performance over what would normally be expected.  It would be a great shame for impotent sportsmen if Viagra, Cialis and Levitra were added to the banned substances lists.  Doing without before sport may take on a whole new compulsory meaning.