This study is comparison for efficacy and safety of bowel preparation between oral sulfate table and 2L-polyethylene glycol/ascorbate in elderly: multicenter, prospective, investigator single-blinded, randomized study. A total of 256 subjects will participate to this study and be assigned to the test group or the control group. The subject will administer the first dose of assigned investigational product in the evening prior to the scheduled colonoscopy. Subject will take the second dose early in the morning of the colonoscopy.
This study compares the effectiveness and stability of intestinal tablet (OST), an oral sulfate table (OST), developed in the form of pills, with 2L-PEG/Asc for examinees aged 70 or older who are scheduled for colonoscopy.