Cenforce 120 is another variant of the medication used to treat erectile dysfunction (ED). It contains Sildenafil Citrate, the same active ingredient found in Viagra and Cenforce 200, but in a 120 mg dose. Like other Sildenafil-based products, Cenforce 120 works by helping increase blood flow to the penis when a man is sexually aroused, aiding in the achievement and maintenance of an erection.