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Do not take Viagra if you are also using a nitrate drug for chest pain or heart problems. This includes nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). Taking Viagra with a nitrate medicine can cause a sudden and serious decrease in blood pressure.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.Treating Erectile Dysfunction do i need a prescription for cialis Prior to initiating treatment with Cialis for BPH, consideration should be given to other urological conditions that may cause similar symptoms. In addition, prostate cancer and BPH may coexist.Generic Viagra (sildenafil citrate) is a licensed medication that serves as an aid for erectile dysfunction or impotence. It helps patients have a total ability to achieve erection consistently - firm enough for sexual intercourse.
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Keep Viagra and all medicines out of the reach of children.None of these PDE-5 inhibitors should be used more than once a day.
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Cialis (tadalafil) is a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Tadalafil has the empirical formula C22H19N3O4 representing a molecular weight of 389.41. The structural formula is:
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