5 Simple Statements About viagra Explained
Sildenafil is often a potent and selective inhibitor of cGMP-precise phosphodiesterase kind 5 (PDE5), and that is responsible for degradation of cGMP while in the corpus cavernosum. The molecular composition of sildenafil is similar to that of cGMP and acts to be a competitive binding agent of PDE5 within the corpus cavernosum, resulting in additio