Historical Information on Sildenafil citrate (marketed as Viagra)
The FDA approved Viagra on March 27, 1998. Viagra is the first oral pill to treat impotence, a dysfunction that affects millions of men in the United States. Viagra is manufactured by Pfizer Pharmaceuticals, New York, NY.
- Information for Healthcare Professionals Sheet (7/8/2005)
- Regulatory History of Sildenafil from Drugs@FDA (includes labeling, approval letters, reviews)