Zhewitra is a medication used to treat erectile dysfunction (ED). It contains vardenafil, which is a phosphodiesterase type 5 (PDE5) inhibitor, similar to sildenafil (Viagra) and tadalafil (Cialis). Vardenafil, the active ingredient in Zhewitra, works by increasing blood flow to the penis during sexual arousal. It does this by inhibiting the PDE5 enzyme, which helps to relax the blood vessels in the penis and facilitates an erection.
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