Zhewitra 40 mg is a widely used medication for treating erectile dysfunction (ED) in men. Containing the active ingredient Vardenafil, it belongs to a class of drugs known as PDE5 inhibitors. Zhewitra 40 mg works by enhancing blood flow to the penis, helping men achieve and maintain an erection during sexual activity. The active ingredient in Zhewitra 40 mg, Vardenafil, works by inhibiting the enzyme phosphodiesterase type 5 (PDE5). PDE5 is responsible for breaking down a molecule called cGMP, which regulates blood flow to the penis.

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