What Is Sildenafil?
The generic form of Viagra is called Sildenafil. They are the same chemical compound and it has the same effects and is just as effective as Viagra. Viagra is simply a brand name that the patent has expired on allowing Sildenafil to be sold as the generic form of Viagra, it is the same active ingredients. The only difference is the price, with Sildenafil being substantially cheaper. Different ED treatments work better for different individuals.