THE ULTIMATE GUIDE TO VIAGRA 100MG

Sildenafil is a powerful and selective inhibitor of cGMP-certain phosphodiesterase form 5 (PDE5), that is to blame for degradation of cGMP while in the corpus cavernosum. The molecular composition of sildenafil is comparable to that of cGMP and acts as a competitive binding agent of PDE5 inside the corpus cavernosum, causing extra cGMP and increase