About Viagra
World’s First ED Therapeutics (Component Citrate Sildenafill) Viagra has been approved by the US FDA in March 1998, with the world’s first oral ED therapeutic agent, developed by Pfizer. There is also an episode that erectile effects have been discovered while developing a therapeutic agent for angina. In Japan, Viagra was released from Nippon Pfizer in March 1999. Beer appearing before the appearance of Viagra, so I did not exist as an oral ED therapeutic agent, so ED treatment has a revolutionary phase by Viagra. Currently, Viagra is approved and widely used in more than 120 countries worldwide, and 35 million men in the world use. According to Pfizer’s materials,





