Cenforce is used to treat men with ED. This medicine contains Sildenafil, which helps relax the muscles by dilating blood in the penile arteries. This medicine should be used only by men above 18 years of age. This medicine can be taken before or after food. The effect of this medicine usually lasts for 3-4 hours. This medicine improves your sex life. You can enjoy a satisfactory erection by using this medicine 1 hour before intercourse.