Can Viagra be used to treat any other medical disorder besides erectile failure?

Yes, the smooth muscle relaxing effects of generic Viagra also have been utilized to treat several other medical disorders besides impotence. There are some individuals who develop narrowing of blood vessels in the lung and are unable to get oxygen. These individuals with pulmonary hypertension benefit enormously from Viagra. The medication acts by generating nitric oxide, which relaxes the blood vessel and allows blood to flow into the lungs where it can be oxygenated. 

Viagra can also used by individuals who climb mountains and live at high altitudes. Because oxygen concentrations are low at high altitudes, Viagra acts by opening up the blood vessels in the lung and allows maximum blood to be oxygenated. However, Viagra must be taken daily to obtain the medical benefits and it can be costly.