THE BASIC PRINCIPLES OF VIAGRA

Sildenafil was detrimental in in vitro bacterial and Chinese hamster ovary cell assays to detect mutagenicity, and in vitro human lymphocytes and in vivo mouse micronucleus assays to detect clastogenicity.This metabolite features a PDE selectivity profile just like sildenafil and an in vitro potency for PDE5 approximately 50% in the guardian drug.