비아그라의 가장 좋은 면
At solitary oral doses of one hundred mg and 200 mg, transient dose-associated impairment of coloration discrimination was detected utilizing the Farnsworth-Munsell 100-hue exam, with peak outcomes near the time of peak plasma concentrations. This acquiring is per the inhibition of PDE6, that is linked to phototransduction inside the retina.VIAGRA