A randomized controlled trial for evaluation of Afternoon Colonoscopy

Interventions: ACS Group Day of exam, 8:00a.m. Jelly intake (Nonfiber Wieder in Jelly Energy Drink 2 packs=360kcal). 12:00, polyethylene glycol lavage 2000ml taken over a 2 hr period at the hospital. Day of exam,no breakfast. 10:00a.m. polyethylene glycol lavage 2000ml taken over a 2 hr period at the hospital. Primary outcome(s): Verification that the efficacy of colon irrigation in the ACS group is not inferior to the control group (non-inferiority trial) Study Design: Parallel Randomized