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Penegra 50 mg is a medication that contains sildenafil citrate, a phosphodiesterase type 5 (PDE5) inhibitor, which is commonly used to treat erectile dysfunction (ED) in men. Erectile dysfunction is a condition where a man has difficulty achieving or maintaining an erection sufficient for sexual activity, and Penegra 50 mg works by improving blood flow to the penis during sexual arousal. The active ingredient, sildenafil, blocks the PDE5 enzyme, which normally breaks down cyclic GMP (cGMP) that is responsible for relaxing the smooth muscle and dilating blood vessels in the penis.

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