Cenforce Professional works by increasing blood flow to the penis. When sexual arousal occurs, the body releases nitric oxide, which in turn stimulates the production of cyclic guanosine monophosphate (cGMP). This compound relaxes blood vessels and allows for increased blood flow. However, in men with ED, the process is often disrupted. Sildenafil Citrate, the active ingredient in Cenforce Professional, inhibits the enzyme phosphodiesterase type 5 (PDE5), which can break down cGMP. https://www.genericday.com/cenforce-professional.html