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The longer cGMP persists, the more prolonged the engorgement of the penis.. Sildenafil prevents the destruction of an enzyme cGMP and allows cGMP to accumulate and persist longer. The mechanism of action of Tadalafil is the same as Viagra (Sildenafil) and works by blocking an enzyme called PDE 5 which helps the smooth muscles in the sildenafil citrate softabs penis to relax, thereby increasing blood flow to the penis. The inhibition of Serotonin sildenafil citrate uptake inhibits the ejaculatory expulsion of reflex to the brain, thereby preventing premature ejaculation in men. Dapoxetine belongs to a class of medicines known as Selective Serotonin Reuptake Inhibitors (SSRI) which inhibits the uptake of serotonin in the neural cells. For ejaculation to happen in men, a reflex has to be passed on to the brain sildenafil citrate jelly 5 mg 30 sachets via the sympathetic nervous system.


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