Erectile dysfunction, often known as impotence, is the inability to form or maintain a penile erection sufficient for sexual activity. Cenforce 120 mg improves blood flow to the penis. This aids in achieving or maintaining an erection. Sildenafil is only effective for erectile dysfunction when you are sexually aroused. You can take this medication before or after eating. Take this medicine with water, but don't break or chew it. This medication should be taken 30 minutes before sexual intercourse. This drug is only for men over the age of 18.