Impotence and erectile dysfunction are treated with a drug known as Cenforce 100 . One of the drug's ingredients, sildenafil, helps increase blood flow to a man's penile tissues. Men who use this medication during sexual activity report experiencing stronger erections. Take this medication 30 minutes before engaging in any sexual activity. You can take this medication with or without food. Cold or fatty foods should be avoided when taking this medication as they will slow down the absorption of the medication. The effects of this medication last for 6 hours, so avoid taking it too often. Adhere to your doctor's instructions when using this medication.