Viagra (Sildenafil)
Official site from Pfizer that offers information about erectile dysfunction drug Viagra. Includes the details of how Viagra works, its common side effects, and if ...
www.viagra.com

Viagra - RxList
Offers a clinical overview of how prescription drug Viagra affects nitric oxide levels in the blood as well as sections on recommended dosages and warnings.
www.rxlist.com

Erectile Dysfunction: Viagra and Other Oral Medications ...
Offers information on the oral medications of Viagra, Levitra, and Cialis, the drugs used to treat erectile dysfunction.
www.mayoclinic.com

Viagra (Sildenafil) - Drugs.com
Provides information about Viagra including its side effects and drug interactions.
www.drugs.com

Sildenafil (Viagra) - Wikipedia
User-edited article about sildenafil, the drug sold under the name of Viagra, used to treat male erectile dysfunction and pulmonary arterial hypertension.
en.wikipedia.org

Sildenafil (Viagra) - MedlinePlus
Brief profile of prescription drug Viagra and its use in the treatment of erectile dysfunction. Covers common questions about getting a prescription, side effects, ...
www.nlm.nih.gov

Viagra Survey
Saturday Night Live asks the men of New York if they need Viagra.
www.usrf.org

FDA Viagra (Sildenafil Citrate) Information
Official information from the U.S. Food and Drug Administration about prescription drug Viagra (sildenfil citrate), approved to treat impotence, or erectile ...
www.fda.gov

Sildenafil (Viagra) - FamilyDoctor.org
Basic facts on the erectile dysfunction medicine Sildenafil (brand name Viagra), including its potential side effects, and interactions with other medications.
familydoctor.org

Nonsurgical Treatment of Erectile Dysfunction - eMedicineHealth
Provides information about Viagra, Levitra, and Cialis, the medications used to treat erectile dysfunction.
www.emedicinehealth.com