Your doctor may prescribe a clear liquid diet before or after surgery as a way to overcome nausea, vomiting or severe diarrhea prior to a colonoscopy or as a treatment for digestive problems like ulcerative colitis or inflammatory bowel disease. Usually, a clear liquid diet is followed for just a few days because it lacks adequate nutrients and calories to support health. A clear liquid diet helps to maintain adequate hydration and electrolyte levels, especially in people who are recovering from illness or surgery.
Water
Plain water as well as sparkling water are allowed on a clear liquid diet. Avoid adding lemon or lime slices so you do not ingest any pulp. A splash of fruit juice or lemonade may make the water more palatable.
Juices
Thin, pulp-free juices like apple or white grape fit into a clear liquid diet. Check with your doctor as dark juices, such as purple grape or cranberry may not be advised before procedures like a colonoscopy, notes MayoClinic.com.
Broth
Chicken or vegetable broth is a warm alternative on a clear liquid diet. Buy it in a can, box or as a cube to dissolve in water. Go for low-sodium versions to keep your salt intake in check.
Gelatin
Gelatin, prepared, gives you something to "chew" on a clear liquid diet. Go for lighter colors, as dark purples and reds can affect certain tests.
Frozen Treats
Go for fruit flavored ices or ice pops that do not contain fruit pulp. Again, seek out light colors and avoid creamy chocolate or creamsicle types.
Tea and Coffee
Weak tea and coffee, without any added cream or milk, may be consumed on a liquid diet. Honey and sugar are acceptable on a clear liquid diet, notes Drugs.com.
Soft Drinks
Ginger-ale, lemon-lime soda and sports drinks count as clear liquids. Avoid colas, root beer and brightly colored sodas.
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