Two days prior to your test try to eat a low residue diet. This means you should avoid foods with seeds, popcorn, nuts, fibrous vegetables, and fruits.
Follow a clear liquid diet the day before your procedure. Starting when you wake up, do not eat solid food for breakfast, lunch, or dinner. Do not drink milk or alcohol the entire day before. You should drink only clear liquids. Make sure you drink at least 8 oz. of clear liquids every hour while awake. (If you are a diabetic, you will need to drink Crystal Light Natural Lemonade or Pedialyte.)
Clear liquids include the following:
- Water: tap, spring, sparkling, or seltzer
- Juice: apple, white grape, or white cranberry
- Soda: diet or regular, lemon, lime, ginger ale, Sprite, or 7Up
- Coffee or Tea: No milk, cream, or powered creamer
- Gelatin: Jell-O (Not red or orange)
- Sherbet, Popsicles or Water Ice: lemon or lime (Not red or orange)
- Clear Broth: beef or chicken broth without noodles
- Gatorade: (Not red or orange)
- Crystal Light Natural Lemonade
If recommended by your doctor, take four 4 Dulcolax (Biscacodyl) tablets by mouth at 4 p.m. the day before your procedure. If your doctor has recommended using MiraLAX, mix the entire 238 gram bottle with 64 oz. of Gatorade, Crystal Light Natural Lemonade, or Pedialyte in a large pitcher. Stir and place in refrigerator (must be consumed within 24 hours of mixing.
Beginning at 5 p.m. the day before your procedure, drink an 8 oz. glass of your laxative every 15 minutes:
- 5:00 p.m.- Drink 8 oz. of laxative solution
- 5:15 p.m.- Drink 8 oz. of laxative solution
- 5:30 p.m.- Drink 8 oz. of laxative solution
- 5:45 p.m.- Drink 8 oz. of laxative solution
If you feel full or experience nausea or significant abdominal pain, wait before drinking the next glass. It may be easier to drink each 8 oz. glass rapidly rather than drinking small amounts continuously. Drink the entire gallon of fluid. You should begin having bowel movements within the hour.
If you are scheduled for a morning procedure, you should have nothing by mouth (including gum and mints) after midnight. Continue to consume clear liquids until bedtime, but no later than midnight the night before. The exception is medication taken with small sips of water.