Men who suffer from erectile dysfunction take a medication called Cenforce 50 Tablet. Sildenafil, an ingredient in this medication, helps men achieve a strong erection so they can enjoy sex for an extended period of time. This medication can be taken either before or after a meal. Take this medication half an hour before sexual activity. This medication takes 6 hours to take effect. Alcohol and fatty foods should not be consumed with this medication since they will decrease its effectiveness.