Viagra, which has the generic name of Sildenafil, is a drug that is mainly formulated to treat men with erectile dysfunction. It may also be used to treat pulmonary arterial hypertension. However, it has yet to show effectiveness as a treatment for women's sexual problems. As with any manufactured drug, it comes with side effects. The most common are heartburn, flushed skin, and headaches. There are also a few rare cases where erections are abnormally prolonged and painful; and where usage cause hearing loss. One should consult with a doctor before taking Viagra.