Fildena 50 is a medication used to treat erectile dysfunction (ED). It contains sildenafil citrate, the same active ingredient found in Viagra, and works by enhancing blood flow to the penis, helping men achieve and maintain an erection during sexual activity. Fildena 50 works by inhibiting the enzyme phosphodiesterase type 5 (PDE5). Normally, PDE5 breaks down cyclic GMP, a substance that helps relax the blood vessels in the penis.

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