비아그라에 대한 확실한 가이드
At one oral doses of one hundred mg and 200 mg, transient dose-related impairment of shade discrimination was detected using the Farnsworth-Munsell a hundred-hue take a look at, with peak results near the time of peak plasma stages. This acquiring is according to the inhibition of PDE6, and that is involved in phototransduction during the retina.Di