This is a prospective randomized study compared with active control arm. The investigators compare the colon cleansing in patients undergoing colonoscopy.

Inclusion Criteria:

• Male and female outpatients and inpatients aged: ≥19
• A prospective colonoscopy person
• Written informed consent to participate in the trial

Exclusion Criteria:

• Patients with past history of severe constipation (requiring repeated use of laxatives/enema or physical intervention before resolution), known or suspected ileus, gastrointestinal obstruction, gastric retention, bowel perforation, toxic colitis or megacolon.
• Patients with ongoing severe acute Inflammatory Bowel Disease.
• Patients who have had previous significant gastrointestinal surgeries, including colonic resection, subtotal colectomy, abdominoperineal resection, defunctioning colostomy.
• Pregnant women or pregnant women or pregnant women
• Severe heart disease (cardiac failure (NYHA class 3 and 4))
• Acute coronary artery disease within 24 weeks before screening (an unstable angina pectoris, acute myocardial infarction), clinically significant arrhythmia, hypertrophic obstruction Cardiomyopathy, valvular disease, aortic and peripheral vascular diseases.
• People who have hypersensitivity or allergies to clinical trial drug components.