People who are weak and unable to get an erection? Start cenforce-100 A pill immediately. Sildenafil works in the main. It has individual effects in constant refills. It relaxes the cardiovascular muscle. It removes the disease of sexual intercourse in life. You take the medicine with a light meal. Take this medicine 20 minutes before sexual intercourse. Take this medicine as per the doctor's advice. So take care not to get another disease. You take the medicine only once in 24 hours.