THE BEST SIDE OF VIAGRA

Sildenafil can be a strong and selective inhibitor of cGMP-particular phosphodiesterase form 5 (PDE5), which is answerable for degradation of cGMP during the corpus cavernosum. The molecular structure of sildenafil is similar to that of cGMP and acts like a competitive binding agent of PDE5 while in the corpus cavernosum, causing extra cGMP and enh