Cenforce 50 is a prescription medication. Sildenafil is the active ingredient in this medication. This medication is intended to treat impotence. This medication allows males to have a longer sexual erection. This medication is administered in a variety of dosages. This medication is administered 30 minutes or an hour before sexual activity. This medication has an effect on men for up to 36 hours. Before taking Cenforce 50, you should talk to your doctor.