<p class="MsoNormal">Cenforce 120 mg inhibits the enzyme PDE5, which normally breaks down cyclic guanosine monophosphate (cGMP). cGMP is a molecule that helps relax and dilate the blood vessels. By blocking PDE5, Cenforce 120 mg prevents the breakdown of cGMP, leading to higher levels of cGMP in the body. Higher levels of cGMP cause the smooth muscle in the blood vessels to relax, leading to widened blood vessels.