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Revatio and Viagra contain the same active ingredient called sildenafil. However, Revatio is used for pulmonary arterial ...

Although Cialis and Viagra both make it easier to get and maintain pleasure, there are a few key differences between these two ED medications that may make one a better choice than the other for ...

Viagra usually starts working 30 to 60 minutes after taking it. But simply swallowing the little blue pill won’t automatically make you hard — you still have to be aroused, either through ...