Cenforce 200 mg is a commonly prescribed prescription drug used to treat erectile dysfunction. It belongs to a class of medicines called phosphodiesterase type 5 (PDE5) inhibitors. When a man is sexually aroused, Cenforce 100mg helps the blood vessels in the penis to relax, which leads to increased blood flow, leading to an erection. The effects of Cenforce 100 mg usually last four to six hours.