VIAGRA THINGS TO KNOW BEFORE YOU BUY

Sildenafil can be a strong and selective inhibitor of cGMP-certain phosphodiesterase type 5 (PDE5), that's accountable for degradation of cGMP inside the corpus cavernosum. The molecular framework of sildenafil is analogous to that of cGMP and acts like a competitive binding agent of PDE5 from the corpus cavernosum, causing extra cGMP and elevated