Definition and example of “how to buy real viagra”: Viagra is a medication used to treat erectile dysfunction (ED) in men. It is a phosphodiesterase type 5 (PDE5) inhibitor that works by increasing blood flow to the penis. This can help men achieve and maintain an erection. Viagra is available in tablet form and is taken orally.
Importance, benefits, and historical context:Viagra was first approved by the FDA in 1998. It has since become one of the most popular medications for ED. Viagra has helped millions of men improve their sexual function and quality of life.