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Developed by Pfizer, Sildenafil Citrate or commonly known as Viagra is a drug used for the treatment of erectile dysfunction or also known as impotence and pulmonary arterial hypertension or PAH. Its primary competitors on the market are tadalafil (Cialis), and vardenafil (Levitra). It is now primarily taken for medication to allow adequate sexual stimulation, relaxes the blood vessels of the penis and helps erection.

This entry was posted on Thursday, April 26th, 2007 at 10:09 am and is filed under Cialis, Levitra, Mens Health, Viagra. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.