아무도 논의하지 않는 비아그라의 영리한 비법

At single oral doses of 100 mg and 200 mg, transient dose-associated impairment of colour discrimination was detected using the Farnsworth-Munsell 100-hue check, with peak results near the time of peak plasma concentrations. This discovering is in step with the inhibition of PDE6, that's involved in phototransduction while in the retina.“This was