Viagra habituation – no wonder remedy after all.

Viagra, the popular anti-impotence drug, may stop working for many patients after 2 years, the results of a study suggest. Dr. Rizk El-Galley of the University of Alabama at Birmingham and colleagues interviewed 151 men who had filled prescriptions for Viagra. Overall, 74% reported that 25 milligrams (mg) to 100 mg of the drug enabled [...]