비아그라 - 개요

Although the interaction amongst other protease inhibitors and sildenafil hasn't been examined, their concomitant use is predicted to increase sildenafil ranges.Sildenafil improves the outcome of NO by inhibiting phosphodiesterase variety 5 (PDE5), which can be responsible for degradation of cGMP within the corpus cavernosum. Sildenafil has no imme