Viagra is a drug used to treat male erectile dysfunction, developed by the pharmaceutical company Pfizer.
The generic name for this compound is ''sildenafil''. It is a blue pill with the words "Pfizer" on one side and "VGR xx" (with xx being either 25, 50 or 100 as the miligram dose of that pill) on the other. Chemical name: 1-[4-ethoxy- 3-(6,7-dihydro- 1-methyl- 7-oxo- 3-propyl- 1H-pyrazolo [4,3-d]pyrimidin-5-yl) phenylsulfonyl]- 4-methylpiperazine citrate.
Molecular formula: 씨알리스정 C22H30N6O4S.C6H807. MW: 666.7 Mechanism of action
Part of the physiological process of erection involves the release of nitric oxide (NO) in the corpus cavernosum. This then activates the enzyme, guanylate cyclase, 씨알리스정 which results in increased levels of cyclic guanosine monophosphate (cGMP) which results in smooth muscle relaxation in the corpus cavernosum which leads to increased inflow of blood which leads directly to erection.
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