비아그라 - 개요
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 effects close to the time of peak plasma stages. This acquiring is in step with the inhibition of PDE6, that is linked to phototransduction inside the retina.Sild