VIAGRA CAN BE FUN FOR ANYONE

Sildenafil is usually a potent and selective inhibitor of cGMP-particular phosphodiesterase sort 5 (PDE5), and that is responsible for degradation of cGMP inside the corpus cavernosum. The molecular framework of sildenafil is similar to that of cGMP and functions as a competitive binding agent of PDE5 in the corpus cavernosum, causing extra cGMP an