Zhewitra 40 mg contains the active ingredient Vardenafil, which is primarily used to treat erectile dysfunction (ED) in men. It belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors, similar to other ED medications like Viagra (Sildenafil) and Cialis (Tadalafil). Vardenafil, the active ingredient in Zhewitra 40 mg, works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which regulates blood flow in the penis. https://www.genericday.com/zhewitra-40-mg.html