Information about Sildenafil (Generic Viagra) :


Viagra (Sildenafil) is an effective drug used to treat men who experience erectile dysfunction (sexual impotence). This medicine delays the enzymes called phosphodiesterases. In that way Viagra helps to achieve and maintain good erection during sexual stimulation. Another brand of Sildenafil is Revatio, which is used for treatment of pulmonary arterial hypertension and improvement exercise capacity in men and women.
Sildenafil may also be used for other conditions as determined by your doctor.

You should not use Viagra in case you have any condition mentioned below: you take nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, and others), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur, ISMO, Monoket). Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). Using Viagra with a nitrate medicine can lead to a serious decrease in blood pressure, leading to fainting, stroke, or heart attack.

A small number of patients is reported to have experienced a sudden loss of eyesight after using Viagra. It is caused by decreased blood flow to the optic nerve of the eye. It is not known whether Viagra is the actual reason of this loss of eyesight. It is more likely to have such a problem if you have heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoke or are over 50 years old.

Be aware that Viagra may interact with some medicines. Consult with your health care provider in case you are taking any other drugs, especially any of the following: nitroglycerin-type drugs for the heart or chest pain such as amyl nitrite, isosorbide dinitrate, isosorbide mononitrate, nitroglycerin, even if these are only taken occasionally; alpha blockers, used for high blood pressure or an enlarged prostate. NOTE: Do not take doses of sildenafil higher than 25 mg within 4 hours of taking alpha blockers, such as alfuzosin (UroXatral®), doxazosin (Cardura®), prazosin (Minipress®), or terazosin (Hytrin®); bosentan; certain drugs used for seizures such as carbamazepine, phenytoin, and Phenobarbital; certain drugs used for fungal or yeast infections, such as fluconazole, ketoconazole, and voriconazole; certain drugs for the treatment of HIV infection or AIDS; cimetidine; cisapride; clarithromycin; diltiazem; erythromycin; grapefruit juice; mibefradil; nitroprusside; rifabutin; rifampin; quinidine; some drugs for treating depression, anxiety or other mood problems (examples: fluoxetine, fluvoxamine, nefazodone); verapamil.

Before using Viagra you should tell your doctor if you have any medical conditions listed below: heart disease or heart rhythm problems; a recent history (in the past 6 months) of a heart attack, stroke, or heart rhythm disorder; congestive heart failure; high or low blood pressure; coronary artery disease; liver disease; kidney disease; a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia; a bleeding disorder such as hemophilia; a stomach ulcer; retinitis pigmentosa (an inherited condition of the eye); a physical deformity of the penis (such as Peyronie's disease); or you have been told you should not have sexual intercourse for health reasons.

In such cases, you may not be able to take Viagra or you may need a special dosage adjustment or special tests during course of treatment.

Viagra is in FDA pregnancy category B. It is not used for women. Nevertheless this medication is not expected to be deleterious to an unborn baby. You should not use Viagra without medical consultation in case you are pregnant or plan pregnancy during treatment. It is not clear whether Viagra passes into breast milk that is why you should not take this medication without telling your doctor if you are breast-feeding a baby.

How to take Viagra:
It is recommended to take each dose with a full glass of water. Try to avoid using High-fat food before taking Viagra as it may cause the medicine to take more time to effect.

Take Viagra when it needs. It is recommended to take it 30 - 90 minutes before sexual intercourse. You should know that this medication helps to have a good erection when sexual stimulation occurs; an erection will not happen just by using Viagra.

Do not take Viagra more than once per day. Keep the 24 hours interval between doses.

This medication should be kept at indoor temperature away from moisture and heat.

Missed dose: Viagra is used when necessary. You are unlikely to miss a dose.

In case you miss a dose of Revatio, take it as soon as possible. If it is almost time for your next intake, skip the missed dose and take it according to your regular dosing schedule. Do not take double doses at once. Do not take extra medicine to make up the missed dose.

What happens if I overdose?
Seek emergency medical attention in case an overdosage is suspected. Symptoms of the overdose are chest pain, nausea, irregular heartbeat, and feeling light-headed or fainting.

What should I avoid while taking Viagra?
Try to avoid drinking alcohol, as it may increase the risk of side effects of Viagra.

Any other drugs to treat impotence, such as alprostadil (Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin, others), should not be used while taking Viagra unless your doctor recommends otherwise.

What are the possible side effects of Viagra?
You should stop and consult with your doctor right away if you experience any of side effects especially bothersome listed below: dizziness or nausea, pain, numbness, or tingling in your chest, arms, neck, or jaw during sexual activity, chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling; irregular heartbeat; swelling in your hands, ankles, or feet; shortness of breath; vision changes; feeling light-headed, fainting; or penis erection that is painful or lasts 4 hours or longer.

Stop taking Viagra and seek emergency medical help if you have sudden vision loss.

Seek emergency in case you have any of these severe side effects: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Do not stop taking Viagra but consult with your doctor if you have any of these less serious side effects: warmth or redness in your face, neck, or chest; stuffy nose; headache; upset stomach; or back pain.

What is the shelf life of the pills?
This information is mentioned on each blister. The expiration date is 2 years from the date of manufacture.