According to Dr. Robbins, it's important to avoid drinking red, blue or purple liquids when you're on a clear liquid diet for colonoscopy prep. These colors can stain your colon and be mistaken ...
But colonoscopy preparation protocols -- which involve a 24-hour clear liquid diet to empty the colon -- "appear to confer a protective effect and decrease the risks of food retention," she added.
The steps you need to take to prepare for a colonoscopy include: Cut down on your consumption of high-fiber foods three days before the procedure. Consume a clear liquid diet the day before the ...