아무도 비아그라에 관한 사실 제안
At solitary oral doses of 100 mg and two hundred mg, transient dose-similar impairment of coloration discrimination was detected using the Farnsworth-Munsell 100-hue test, with peak effects near the time of peak plasma degrees. This obtaining is per the inhibition of PDE6, which is involved with phototransduction while in the retina.Males with untr