Prepackaged Nutritional Formulations Versus Restricted Diet for Bowel Preparation

Comparing the Efficacy and Tolerability of a Prepackaged Semisolid Nutritional Formulations With a Restricted Diet for Colonoscopy Preparation: A Randomized Clinical Trial.

In order to analyze the effectiveness and patient tolerance of the two bowel preparation regimens, the investigators will compare prepackaged semisolid nutritional formulations and restricted diet. The aim was to demonstrate that prepackaged semisolid nutritional formulations is not inferior in overall quality of intestinal preparation to restricted diet in subjects undergoing colonoscopy.

Inclusion Criteria:

• Patients age between 18-75 years old requiring colonoscopy and willing to participate in this study.

Exclusion Criteria:

1. Patients with constipation;
2. Patients with congestive heart failure;
3. Patients with a history of kidney disease;
4. Patients with a history of poor intestinal preparation;
5. Pregnant / lactating women;
6. Patients without informed consent;
7. Allergic or intolerant to any research drug;
8. Patients with severe gastrointestinal diseases, such as intestinal obstruction or perforation, active ulcerative colitis, toxic colitis and toxic megacolon;
9. Patients with a history of inflammatory bowel disease;
10. History of colorectal resection；
11. Patients with diabetes.