Roberttanser
Zhewitra 20 mg works by blocking the enzyme phosphodiesterase type 5 (PDE5), which breaks down a substance called cyclic GMP that helps relax the muscles of the penis and increase blood flow. By inhibiting PDE5, Zhewitra 20 mg allows cyclic GMP levels to increase, resulting in the dilation of blood vessels in the penis, which makes it easier to achieve and sustain an erection when sexually aroused.