Men's impotence and erectile dysfunction can be effectively treated with cenforce medication. A component in this medication called sildenafil helps men achieve a powerful erection during sexual activity. Take this medication half an hour before sexual activity. This is a male-only medicine. This medication takes four to six hours to take effect. Cold beverages and fatty meals should not be consumed with this medication since they will lessen its effectiveness. Follow your doctor's advice when taking this medication. This medication can be used either before or after a meal. Consume this medication with water; do not crush or chew the tablet.