Filagra is a brand name for a medication used to treat erectile dysfunction (ED) in men. It contains Sildenafil Citrate, the same active ingredient found in Viagra. Sildenafil works by increasing blood flow to the penis, helping men achieve and maintain an erection during sexual arousal. Filagra is a PDE5 inhibitor, which means it works by inhibiting the enzyme phosphodiesterase type 5 (PDE5). This enzyme typically breaks down cGMP (cyclic guanosine monophosphate), a molecule that helps relax the smooth muscles of the blood vessels in the penis.
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