When Was Viagra approved by the FDA?

Sildenafil as the active ingredient of Viagra was patented in 1996. In 1998, 2 years later — surprisingly short period comparing to other drugs — the Food and Drug Administration (FDA) approved use of the drug Viagra, an oral drug for treating erectile dysfunction.

Sildenafil, the chemical name for Viagra, is an artificial substance initially created to treat hypertension (high blood pressure) and angina pectoris (a form of cardiovascular disease).

During the research, however, scientists at the Pfizer pharmaceutical company discovered that despite Sildenafil’s little efficiency in treating angina, it could enhance penile erections during 30 — 60 minutes. It is widely believed that Viagra was created by Peter Dunn and Albert Wood.

Commercial interest encouraged this enterprise to patent Sildenafil as a medication for treating erectile dysfunction in 1996. An enormous success came to this drug in almost no time.

Viagra’s influence on the pharmaceutical and medical industries was unprecedented. Though it is only available by prescription, in the public mind Viagra is strongly associated with treating of erectile dysfunction. The drug was even proposed over the Internet – buyers needed only to fill out an «online consultation» to receive samples.

Popularity of Viagra encouraged further development of Sildenafil. The FDA approved the first generic version of Viagra (sildenafil citrate) for the treatment of erectile dysfunction.

The Pennsylvania-based pharmaceutical company Teva added the drug, sildenafil citrate, for male erectile dysfunction to its other generic medications. The drug is on sale since December 11, 2017.

Sildenafil citrate tablets that used to be sold only under the brand name Viagra appear in three strengths: 25 milligram, 50 milligram, and 100 milligram tablets, the same strengths Viagra sells.

Teva previously gained tentative FDA approval for its generic Viagra and has been selling its copy drug since June 2013 in Europe, where dozens of other generics are also available.

Since 1998 over 20 million Americans have tried Viagra, and this number is constantly growing. It means that despite emerging of other ED drugs on the pharmaceutical market Viagra’s popularity doesn’t decrease. Even the problem of a quite high price of Viagra is now reduced by apparition of its generic versions.