Cenforce pills are used by men who suffer from erectile dysfunction or impotence. Sildenafil citrate is present in this medicine. This drug increases blood circulation in the penis during sex and helps men get an erection. This medicine is taken 30-60 minutes before sex. The effect of this medicine lasts for 4-5 hours. Take this medicine with plenty of water. This tablet can only be taken by men above 18 years, women cannot use it.