Cenforce 130 treats erectile dysfunction, a medical condition in which a man is unable to achieve a strong erection when the penis is sexually aroused. The main ingredient in this medicine is Sildenafil Citrate. This drug relaxes the blood vessels and helps increase blood flow to the muscles. It is advised to take this medicine one hour before planning intercourse to improve your sex life. The drug can also be used on an empty stomach. The effect of this medicine usually lasts for 3 to 4 hours.