Cenforce is a top drug for treating erectile dysfunction containing sildenafil citrate. It should be taken 30 minutes before intercourse by men over 18 and works by relaxing muscles to increase blood flow, helping treat poor erections. Potential side effects include diarrhea, flushing, headaches and upset stomach. To avoid side effects, one tablet is advisable depending on age, weight and other health factors. Cenforce can be ordered online from Eonline Pharmacy Store for delivery.