Cenforce-100 drug contains an ingredient called sildenafil which helps men to have longer sex by eliminating male sexual problems. This medicine is only taken by men above 18 years of age. The effect of this medicine lasts for 4 to 6 hours. You can take this medicine before or after food. Do not consume fatty foods or alcoholic beverages with this medicine as it slows down the effect of the medicine. You can take this medicine as per doctor's advice.