Zhewitra 40 mg is a medication used to treat erectile dysfunction in men. It contains the active ingredient vardenafil, which belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. Vardenafil works by increasing blood flow to the penis during sexual stimulation, thereby facilitating the achievement and maintenance of an erection. https://www.genericday.com/zhewitra-40-mg.html