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Brand names: Viagra, Revatio

Generic names: Sildenafil citrate

Viagra (sildenafil citrate) is a phosphodiesterase (PDE) inhibitor that helps to treat erectile dysfunction by stimulating blood flow to the penis. It’s recommended to take this medicine about 30-60 minutes before sexual intercourse to provide for maximum efficiency, and some sexual stimulation is required to get the patient excited and to let him feel the full effects of Viagra. It doesn’t matter whether you take Viagra with food or without, just make sure you do not consume fatty meals as these may decrease the absorption of the medicine and reduce its overall effectiveness. If you are taking this medicine for the treatment of erectile dysfunction (Viagra can also be used to treat pulmonary arterial hypertension) you are unlikely to be on a dosing schedule, so if you happen to miss a dose you don’t have to take a double dose to make up for the one you missed. Do not take Viagra if you are not planning to have sex anytime soon.

If you ever had an allergic reaction to this drug or any of the active and inactive ingredients it contains you must not take it to avoid the same reaction. Your pharmacist of doctor will give you more information about whether you can and should take Viagra based on the full health examination. The following health conditions must be reported to your health care provider before you begin the treatment: bleeding disorder, conditions affecting the shape of the penis, diabetes, blood cell problems, pulmonary veno-occlusive disease, chest pain, heart attack, multiple myeloma, blood circulation problems, kidney or liver disease, irregular heartbeat, leukemia, and high cholesterol.