Cenforce 200mg is used to prevent ED or Erectile Dysfunction (impotence). In this health condition, men cannot gain a firm erection for satisfying sexual intercourse. It is the PDE 5 inhibitor that works by blocking the secretion of PDE 5 enzymes. Such a type of natural produce enzyme causes the penis to become flaccid. PDE 5 inhibitor can relax the blood vessels and improve the blood flow to the penis.