The mechanism of Filagra revolves around its active ingredient, sildenafil citrate. When taken, Filagra inhibits the PDE5 enzyme, which is responsible for breaking down cyclic guanosine monophosphate (cGMP). cGMP is essential for relaxing the smooth muscles in the penile blood vessels, allowing increased blood flow into the ****, leading to a firm and sustained erection when ****ual arousal is present.
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