Sildenafil: Dosage, Mechanism/Onset of Action, Half-Life

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For those experiencing the symptoms of erectile dysfunction, there are several different medications available. We took a closer look at some of the best services offering ED pills online. Viagra is a brand-name prescription medication. It s approved by the Food and Drug Administration (FDA) to treat erectile dysfunction (ED) in adult males. With ED, you have trouble getting and keeping an erection that s firm enough to have sex.