Here is a cut/paste from the Viagra "Trial" for Altitude Sickness conducted in Bolivia.
(I wonder if they "normalised" the results for Cocaine traces in the participants ?
Steve M :-)
VIAGRA HELPS WITH ALTITUDE SICKNESS
Viagra may do more than help Pale and his contemporaries to deal with male impotence -- it may help in altitude sickness and perhaps asthma.
A research project, using 100 volunteer medical students at high altitudes in Bolivia, is under way to determine if the blue pills used for erectile dysfunction will help in altitude sickness. At high altitudes, blood vessels in the lungs contract, which can lead to potentially fatal pulmonary edema, making it difficult to breathe.
Like male impotence, altitude sickness results when blood vessels become too constricted. Using Viagra to make blood vessels in the lungs dilate may aid the transfer of oxygen from the lungs to the bloodstream, USA Today reported.
"Viagra is very selective in its effects and it acts on two main parts of the body. The first is obviously the genitals, but the other is the lungs," says project research director Kenneth Baillie in Edinburgh, Scotland.
If research proves effective, it may help in illnesses and symptoms caused by shortage of oxygen such as asthma.
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