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About Viagra (Sildenafil)Here is where you can find out more about Viagra and generic Viagra before you order. Viagra was the first oral medication to be approved for treatment of erectile dysfunction, also called impotence. It is now used by men worldwide. Viagra is offered in several pill strengths from 50mg to 100mg. Generic Viagra is chemically equivalent to brand-name Viagra and is manufactured using the highest-quality medical procedures. It is usually offered in 100mg-pills. Sildenafil, the active ingredient in Viagra, works by controlling an enzyme called phosphodiesterase that is active in the penis (among other areas). By delaying this enzyme, the drug improves the reaction of the penis to stimulation, and helps to achieve and maintain an erection. Even with use of sildenafil, sexual stimulation is still necessary for erection to occur. Viagra should be taken at least 60 minutes and no more than 4 hours prior to sexual activity (a single tablet each time). It should not be used more than once a day. The effect of Viagra on women is being studied. Currently, Viagra is approved for use in adult men only. | |
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