Viagra
Erectile Dysfunction May Signal Hidden Heart Disease »
"WebMD News from HealthDay
TUESDAY, Jan. 29 (HealthDay News) -- Doctors should look more closely at the overall health of impotent men, a large new study suggests.
Men with even mild erectile dysfunction -- but no known heart"...
Read the Erectile Dysfunction May Signal Hidden Heart Disease article »
Viagra
VIAGRA®
(sildenafil citrate) Tablets
DRUG DESCRIPTION
VIAGRA® (sildenafil citrate) , an oral therapy for erectile dysfunction, is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5).
Sildenafil citrate is designated chemically as 1-[[3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine citrate and has the following structural formula:
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Sildenafil citrate is a white to off-white crystalline powder with a solubility of 3.5 mg/mL in water and a molecular weight of 666.7. VIAGRA (sildenafil citrate) is formulated as blue, film-coated rounded-diamond-shaped tablets equivalent to 25 mg, 50 mg and 100 mg of sildenafil for oral administration. In addition to the active ingredient, sildenafil citrate, each tablet contains the following inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD & C Blue #2 aluminum lake.
What are the possible side effects of sildenafil (Revatio, Viagra)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of sildenafil.
Stop using sildenafil and call your doctor at once if you have a serious side effect such as:
- sudden vision loss;
- ringing in your ears, or sudden hearing...
Read All Potential Side Effects and See Pictures of Viagra »
What are the precautions when taking sildenafil citrate (Viagra)?
Before taking sildenafil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: sickle cell disease, high or low blood pressure, a severe loss of body water (dehydration), history of painful/prolonged erection (priapism), eye problems (such as decreased vision in one or both eyes, retinitis pigmentosa), heart problems (such as heart attack or irregular heartbeat in the past 6 months, heart failure, chest pain/angina, aortic stenosis, idiopathic hypertrophic subaortic stenosis), kidney disease, liver...
Last reviewed on RxList: 1/3/2011
This monograph has been modified to include the generic and brand name in many instances.
Additional Viagra Information
Viagra - User Reviews
Viagra User Reviews
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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