This information is approved and/or reviewed by U-M Health System providers but it is not a tool for self-diagnosis or a substitute for medical treatment. You should speak to your physician or make an appointment to be seen if you have questions or concerns about this information or your medical condition.| Complete disclaimer

2-Day Colonoscopy Prep

2 Days PRIOR to procedure date: ______________________________

Clear liquids only until after procedure. As much as desired. No solid food. Allowed liquids: water, black coffee or tea, apple juice or white grape juice, soda pop (including cola, 7-up, Sprite, ginger ale), lemon or lime powdered drinks (Kool-Aid or Crystal Light), lemon or lime gelatin. Nothing with red, orange, or purple food coloring. Have several servings of a variety of liquids at each meal.

____ At 6:00 PM take 34 grams of Miralax. Miralax can be purchased without a prescription at your local pharmacy. You will mix 2 metered capfuls in 16 ounces of water.

1 Day PRIOR to procedure date: ___________________________________

You may have clear liquids all day, as specified above.


PEG preparation (examples: NuLYTELY, Colyte, GoLYTELY, TriLyte) - You will need a prescription.

____ At 6:00 PM, the day before your colonoscopy, begin drinking the PEG colon solution, which you have mixed ahead of time and chilled. Drink a glassful (8 ounces) every 15 minutes until half the gallon is gone. Your bowels may begin to move in about 30–60 minutes.

____ Drink the remaining ½ of the solution (½ gallon, about 2 quarts) the morning of your procedure, starting at least 4 hours plus driving time before you need to be at the procedure unit.

Day of Procedure:

You may have clear liquids up to 2 hours before the procedure.

Special Instructions: 

If you have diabetes and take insulin, you will need to talk to the health care provider who manages your diabetes.

Procedure date and time: _________________________________________

If you have questions, please call your nurse at this toll-free phone number: _______________________

Information provided by the University of Michigan Health System, Internal Medicine Gastroenterology Clinics and Medical Procedures Unit. 08 September 2009.