what is considered clear liquids before colonoscopy
Purpose. A clear liquid diet is often used before tests, procedures or surgeries that require no food in your stomach or intestines, such as before colonoscopy. It may also be recommended as a short-term diet if you have certain digestive problems, such as nausea, vomiting or diarrhea, or after certain types of surgery.he following foods are allowed in a clear liquid diet: 1  Water (plain, carbonated or flavored). 2  Fruit juices without pulp, such as apple or white grape. 3  Fruit-flavored beverages, such as fruit punch or lemonade.