Zhewitra 20 Mg is a medication that has been a game-changer for those grappling with ED. But how does it work? Zhewitra 20 Mg contains Vardenafil, a potent active ingredient that belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. Its mechanism of action involves increasing blood flow to the penis, thereby facilitating the attainment and sustenance of a firm erection.