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Brand names: Viagra, Revatio

Generic names: Sildenafil citrate

Viagra (sildenafil) is a phosphodiesterase (PDE5) inhibitor used to treat different cases of erectile dysfunction (male impotence). If you have any of the health conditions listed below your doctor needs to know about all of them in order to be able to prescribe the right dosage of Viagra: chest pain, heart attack, eye disease such as retinitis pigmentosa, pulmonary disease, Peyronie’s disease, high cholesterol, blood circulation problems, high or low blood pressure, bleeding disorder, blood cell problems, stomach ulcer, heart, kidney, or liver disease, stroke, irregular heartbeat. Although drinking alcohol is not expected to cause any problem per se, if you combine alcohol with Viagra some of the side effects may be worsened. However, drinking in moderation is considered to be generally safe.