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Ervin Cheapman
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Sildenafil citrate, sold as Viagra, Revatio and under many other trade names, is a medicine made use of to treat erectile dysfunction and pulmonary arterial hypertension (PAH). It was produced and is being marketed by the pharmaceutical company Pfizer. It acts by inhibiting cGMP certain phosphodiesterase form 5, an enzyme... Continue reading
Posted Jun 22, 2010 at Ervin Cheapman's blog
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Jun 22, 2010