Zenegra 100 mg is a medication that contains Sildenafil Citrate, the active ingredient also found in Viagra. It is used to treat erectile dysfunction (ED) in men by increasing blood flow to the penis during physical stimulation, helping to achieve and maintain an erection. Sildenafil Citrate in Zenegra works by inhibiting the enzyme PDE5, which normally limits blood flow to the penis. By blocking this enzyme, Sildenafil helps relax the blood vessels in the penis, allowing more blood to flow in and enabling an erection in response to physical arousal.
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