VIAGRA FOR DUMMIES

Sildenafil is usually a powerful and selective inhibitor of cGMP-precise phosphodiesterase kind 5 (PDE5), which happens to be liable for degradation of cGMP from the corpus cavernosum. The molecular structure of sildenafil is comparable to that of cGMP and functions as being a competitive binding agent of PDE5 during the corpus cavernosum, resultin