Zhewitra is a medication used to treat erectile dysfunction (ED) in men. It contains vardenafil as its active ingredient, which belongs to the class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. Vardenafil works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. Vardenafil is the same active ingredient found in Levitra, another medication used to treat ED. Like other PDE5 inhibitors, it enhances the effects of nitric oxide, a natural substance that relaxes muscles in the penis.
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