LITTLE KNOWN FACTS ABOUT VIAGRA.

This metabolite includes a PDE selectivity profile much like sildenafil and an in vitro potency for PDE5 around 50% of the father or mother drug. Plasma concentrations of the metabolite are approximately forty% of those found for sildenafil, so which the metabolite accounts for around 20% of sildenafil's pharmacologic consequences.Sildenafil can de