Viagra is the most widespread erectile dysfunction medicine in the world. The name is the trademark that Pfizer uses to sell the Sildenafil compound, which bears most of the active effects in this medicament. It was discovered in the late 80s, and its emergence basically turned the branch of ED treatment upside down.
It’s not a permanent solution in any way, but it was the first product that reversed erectile dysfunction in men for several hours in a reliable and safe way. Its effects last for up to 4 hours. Moreover, while it has several nasty side effects that may occur on occasion, it doesn’t really deteriorate your health in exchange for renewed erectile function.