비아그라를 사용하는 가장 좋은 단일 전략
At single oral doses of a hundred mg and two hundred mg, transient dose-similar impairment of shade discrimination was detected using the Farnsworth-Munsell a hundred-hue exam, with peak outcomes near the time of peak plasma levels. This getting is according to the inhibition of PDE6, and that is involved with phototransduction from the retina.expl