비아그라 - 개요
VIAGRA has sildenafil, which is the same medicine located in A different drug known as REVATIO. REVATIO is employed to treat a rare sickness termed pulmonary arterial hypertension (PAH).Sildenafil improves the influence of NO by inhibiting phosphodiesterase kind 5 (PDE5), which happens to be answerable for degradation of cGMP during the corpus cave