비아그라에 대한 확실한 가이드
At solitary oral doses of 100 mg and two hundred mg, transient dose-connected impairment of coloration discrimination was detected utilizing the Farnsworth-Munsell 100-hue take a look at, with peak effects close to the time of peak plasma ranges. This getting is in step with the inhibition of PDE6, which is involved with phototransduction in the re