Viagra is a well-known medication used to treat erectile dysfunction (ED), a condition that affects millions of men around the world. This small blue pill has gained immense popularity since its introduction in 1998, with sales of over $1 billion in the United States alone. But what exactly is Viagra, and how does it work?

The active ingredient in Viagra is sildenafil citrate, a drug that belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. These drugs work by relaxing the blood vessels in the body, particularly in the penis, and allowing more blood to flow through during sexual stimulation. This leads to an erection, as an adequate amount of blood is needed for a man to achieve and maintain an erection.

This is a comprehensive guidebook on how to use viagra for sex