Cenforce 100mg is taken for impotence or erectile dysfunction in men. This drug is only for 18 to 65 years old. This drug has an ingredient called Sildenafil that helps increase blood flow to men's tissues. You can take this medicine even before eating or after eating. The effect of this drug lasts for 4 to 6 hours. Do not consume alcoholic beverages or fatty foods with this drug as it slows down the effect of the drug.