Malegra 120 mg is a prescription medication used to treat erectile dysfunction (ED) in men. Its active ingredient is sildenafil citrate, a phosphodiesterase type 5 (PDE-5) inhibitor, which helps increase blood flow to the penis, enabling men to achieve and maintain an erection during sexual stimulation. During sexual arousal, the body releases nitric oxide (NO) in the penile tissue. NO stimulates cyclic GMP (cGMP) production, which relaxes smooth muscles in the penile blood vessels, allowing more blood to flow into the erectile tissue.

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