비아그라 - 개요
Viagra is intended for use in men, and it is not likely to be used in Gals who're Expecting or breastfeeding. However, Viagra just isn't predicted being harmful to a fetus.Sildenafil boosts the impact of NO by inhibiting phosphodiesterase style 5 (PDE5), that's accountable for degradation of cGMP from the corpus cavernosum. Sildenafil has no immedi