Zhewitra 20 mg is a medication used to treat erectile dysfunction (ED) in men. It contains vardenafil, which is a phosphodiesterase type 5 (PDE5) inhibitor. Vardenafil, the active ingredient in Zhewitra 20 mg, works similarly to other PDE5 inhibitors by increasing blood flow to the penis during sexual stimulation. It achieves this by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which leads to relaxation of the smooth muscle cells in the blood vessels of the penis. This relaxation allows for increased blood flow, resulting in an erection suitable for sexual activity.

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