Viagra was initially developed to treat heart disease (angina). In trial studies, the penile erection enhancing effects were noticed. The drug was patented in 1996, approved by the FDA on March 27, 1998 (becoming the first pill approved to treat erectile dysfunction in the United States) and offered for sale in the United States later [...]
Sildenafil (sil-DEN-a-fil) belongs to a group of medicines that delay the enzymes called phosphodiesterases from working too quickly. The penis is one of the areas where these enzymes work. Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). By controlling the enzyme phosphodiesterase, sildenafil helps to maintain an erection that [...]
This summary contains important information about VIAGRA®. It is not meant to take the place of your doctor’s instructions. Read this information carefully before you start taking VIAGRA. Ask your doctor or pharmacist if you do not understand any of this information or if you want to know more about VIAGRA. This medicine can help [...]