What is the Sildenafil mechanism of action?

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Sildenafil, the active ingredient in 200 mg viagra, works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5). This enzyme is responsible for breaking down a molecule called cyclic guanosine monophosphate (cGMP), which plays a key role in regulating blood flow to the penis. By inhibiting PDE5, sildenafil allows cGMP to accumulate, leading to relaxation of the smooth muscles in the blood vessels of the penis and increased blood flow. Black Viagra 200 mg improved blood flow and can help men achieve and maintain an erection when sexually stimulated. It's important to note that sildenafil does not cause an erection on its own and requires sexual stimulation to be effective. Cenforce 200 for sale at Dosepharmacy online in USA.