비아그라 기본 사항 설명

At single oral doses of one hundred mg and 200 mg, transient dose-similar impairment of shade discrimination was detected using the Farnsworth-Munsell 100-hue check, with peak results close to the time of peak plasma stages. This locating is per the inhibition of PDE6, that is linked to phototransduction inside the retina.Guys with untreated ED exp