A Monocentric Study to Investigate a New Low Dose Oral Gut Cleansing Solution

Inclusion Criteria: * Written informed consent must be obtained prior to inclusion * Male or female * Inpatients 18 to 60 years old with indication for complete colonoscopy * Willing and able to complete the entire procedure and to comply with study instructions * Females of childbearing potential must employ an adequate method of contraception. Exclusion Criteria: * Ileus * Intestinal obstruction or perforation. * Toxic megacolon. * History of any colonic surgery. * Cardiac Insufficiency (NYHA grad III and IV). * Ischemic cardio vascular disease. * Renal insufficiency (creatinine above 1.4 mg/100 ml). * Cirrhosis of liver (child B or C). * Known hypersensitivity to polyethylene glycols and/or Vitamin C. * Concurrent participation in an investigational drug study or participation within 30 days of study entry. * Females who are pregnant, nursing or planning a pregnancy. Females of child bearing potential not using reliable methods of contraception. * Subject has a condition or is in a situation which in the investigators opinion may put the subject at significant risk, may confound the study results, or may interfere significantly. * Abnormal laboratory values (clinically significant) for sodium, potassium, chloride, creatinine and hematocrit * Untreated or uncontrolled arterial hypertension (max. \> 170 mmHg and min \> 100 mmgH).