Cenforce 120 mg is a sildenafil-containing product marketed for the treatment of erectile dysfunction (ED) in adult men. Sildenafil belongs to a group of medicines known as phosphodiesterase type 5 (PDE5) inhibitors. It works by increasing blood flow to the penis during sexual stimulation, helping some men achieve and maintain an erection. Sildenafil does not directly cause an erection and does not increase sexual desire. Sexual stimulation is required for it to work. When prescribed for ED, sildenafil is generally taken before anticipated sexual activity, with the dose selected according to an individual's health, response to treatment, and other medications.