Viagra is the brand name for a drug known as Sildenafil which has been shown to be effective for the treatment of erectile dysfunction. Sildenafil is the active ingredient and has also been available as a generic medicine since 2013. A generic drug contains the same active ingredient as a branded drug and is medically equivalent, but can be made by any generic manufacturer. Pfizer Loses Patent in 2013 to Allow Generic Viagra (Sildenafil)

Viagra was one of the first treatments to be approved for erectile dysfunction treatment and has been used by men around the world for more than a decade with excellent results. Pfizer was the original manufacturer of Viagra and Viagra developed a patent on the product in 1996. It was originally used for the treatment of heart disease, but during clinical studies it was found that it also helped treat erectile dysfunction. In 1998, Pfizer received FDA approval to license the product for the treatment of erectile dysfunction.

In 2013 the Pfizer patent on Viagra in the EU ended allowing generic manufacturers to start producing their own version. The generic version of the drug is known as Sildenafil, which is the active ingredient in Viagra. The name Viagra is still a brand name that only Pfizer can use. So effective on the market, the drug can be bought as either the Pfizer brand Viagra or Generic Viagra.

Pfizer, as well as the rights to use the Viagra brand name, also has a patent on Viagra's unique blue diamond appearance. For many people, Viagra is known as "the little blue pill" and this is still only associated with the Pfizer product brand. The generic is made as white tablets. The appearance of the product is purely cosmetic and has no medical difference.

Price
Viagra Generic is a generic drug, which means that the price is not controlled by a single manufacturer. How several manufacturers on the market produce Viagra Generic is very competitive, which has helped lower the price significantly. Viagra on the other hand is only made by Pfizer, who bring the price without competition control. As Viagra is a well-known brand name, Pfizer are able to charge a higher price. However, as Viagra Generic becomes more well established, it is expected that the demand for the branded Viagra product will decrease and the price of Viagra will fall as a result.