cGMP is chargeable for the contraction and dilation of blood vessels. PDE five breaks down cGMP and obstructs the glide of blood. Sildenafil found in Cenforce 100 blocks the motion of PDE five and will increase the stages of nitric oxide with the aid of using inhibiting the breakdown of cGMP. Once cGMP is produced properly, blood flows without problems to the penis. As an increasing number of blood flows to the penis, a stress is created. This outcome in an erection.