Cenforce 50mg is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, sildenafil works by increasing blood flow to the penis to help a man get and keep an erection.Sildenafil, sold under the brand name Cenforce 50 mg among others, is a medication used to treat Sildenafil is also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs). erectile dysfunction and pulmonary arterial hypertension, Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors.