Cenforce 100 pills is used to cure sexual problems in men. A key ingredient named sildenafil citrate plays an important role. This medicine helps in increasing the blood flow to the muscles. This medicine is taken an hour before intercourse, so that you can enjoy intercourse with your partner for a long time. The effect of this medicine takes about 30 minutes or 1 hour. The effect of this medicine lasts for 5 to 6 hours. This medicine is taken only once in 24 hours.