비아그라에 대한 5가지 쉬운 사실 설명

[33] Research on the results of sildenafil when employed recreationally are restricted, but suggest it's small effect when utilized by people that do not have erectile dysfunction. In one study, a twenty five mg dose was proven to induce no considerable transform in erectile top quality, but did decrease the postejaculatory refractory time.[34] Th