Cialis

Sildenafil citrate, sold as Viagra, Revatio and under individual other m‚tier names, is a antidepressant utilized to treat erectile dysfunction and pulmonary arterial hypertension (PAH). It was developed and is being marketed around the pharmaceutical company Pfizer. It acts on inhibiting cGMP associated with phosphodiesterase paradigm 5, an enzyme that regulates blood go in the penis. Since seemly readily obtainable in 1998, sildenafil has been the prime treatment quest of erectile dysfunction; its initial competitors on the customer base are tadalafil (Cialis) and vardenafil (Levitra).

  • 最終更新:2010-09-15 05:11:28

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