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Viagra is the first and most famous medication used for the treatment of male impotence, also referred to as erectile dysfunction. It’s very important to talk to your doctor in advance before taking Viagra as it is only efficient if your problem is actually erectile dysfunction – it may not work for patients with certain psychological factors that do not have a real problem. Just like any drug with potentially dangerous side effects, Viagra is available upon prescription and needs to be taken exactly as recommended by your doctor – without taking more or less to provide for maximum results. Certain sexual stimulation is required for Viagra to have its effect – although simply taking a pill does make patients several times more sensitive to this kind of stimulation.

Certain medical conditions may be a contraindication. You need to tell your doctor about having high or low blood pressure, a recent history of a stroke, heart attack, coronary artery disease, liver or kidney disease, blood cell disorder, stomach ulcer, bleeding disorder or physical deformity of the penis. These health conditions can make your treatment less efficient and interfere with the medicine. Your doctor will either suggest altering the dosage or switching to another method of treatment.

Brand names: Viagra, Revatio

Generic names: Sildenafil citrate