This page is being served from the Urological Sciences Research Foundation web repository, and was originally posted between 1996-2008. In January 2009 USRF’s founder, Dr. Leonard S. Marks and his staff joined UCLA’s Department of Urology where they are continuing their research. Click for more information.
Impotency Update: Viagra
A USRF stufy to determine the efficacy of sildenafil for the treatment of erectile dysfunction (ED) in a clinical practice setting; to evaluate the correlation between patient and partner perceptions of treatment outcomes; and to assess the relationship between the severity of ED and response to treatment.
Reassuring results of a University of Pennsylvania study of Viagra on cardiovascular effects in men with severe coronary artery disease.
A selection of sources examining the effects of Viagra on Women, links to initial research on Sexual Disfunction and drug therapy.
Usage data for Viagra in the United States.
A look at the illegal, non-prescription online market for Viagra that popped up as soon as the drug was approved.
A cogent prediction about Viagra by Gruntal & Co. analyst David Saks.
View Pfizer's 20 page Viagra package insert.
Men's Journal's chronology of important events in the history of sex research is clever, reasonably accurate, and entertaining.
A list of some commonly prescribed nitrates by class.
A chemical explanation of the working of Viagra.