Viagra:Pfizer's official site for this drug, with information for both patients and medical professionals.
American Academy of Family Physicians - Using Viagra: A look at what this drug is, as well as erectile dysfuction, the side affects and who should not take it.
FDA Adds More Cautions to Viagra Labelling.: Abstracted from: FDA Talk Paper
FDA Viagra Product Information: FDA consumer source for information about Viagra, the medication used to treat men's impotence
Frequently Asked Questions About Viagra: Information on how it works, safety and efficacy and side effects. Reviewed by Harvard Medical School.
Postmarketing Safety of Sildenafil Citrate (Viagra): FDA summary of reports of death in users, as received from marketing March - November, 1998.
Safety and Efficacy of Sildenafil in Postmenopausal Women with Sexual Dysfunction: Abstract of a peer-reviewed study on the effectiveness of Viagra for women.
Sildenafil Citrate: Information from the RxList.
Sildenafil - FamilyDoctor.org: Information for Consumers in English or Spanish.
The Viagra Prank: Comedy article journaling the author's online Viagra purchase and the aftereffects of taking it.
Viagra: Full prescribing information from RxList.
Viagra: Information, including updated labeling, new prescribing information, safety updates, consumer information, and the clinical review of the studies. FDA/Centre for Drug Evaluation and Research.
Viagra Consumer Information: FDA consumer information page about Viagra, the medication used to treat men's impotence.
Viagra Drug Interactions: A partial list of drugs which should not be taken in conjunction with Viagra.
Viagra Fans - Information Exchange: Discussion forum relating to Viagra, Cialis and Levitra.
Viagra Frequently Asked Questions: A list of questions and answers on Viagra has been developed by CDER's Drug Information Branch.