VIAGRA OPTIONS

Sildenafil is usually a strong and selective inhibitor of cGMP-precise phosphodiesterase sort 5 (PDE5), which happens to be chargeable for degradation of cGMP during the corpus cavernosum. The molecular framework of sildenafil is similar to that of cGMP and acts to be a aggressive binding agent of PDE5 inside the corpus cavernosum, resulting in ext