A medication called cenforce 100 blue pill aids men who suffer from long-term erectile dysfunction. Those who experience anxiety, panic attacks, depression, or impotence can benefit greatly from this medication. Sildenafil citrate, a dangerous ingredient in this medication, gives men a powerful erection during sexual activity. You can take this medication any way—before or after food. Before using the medication, one should see a doctor if excessive use poses risks. Drinks that are fatty or cold should be avoided right after taking this medication because they will decrease its effectiveness. This medication takes three to four hours to take effect.