Drinking a combination of MiraLAX and sports drink cleans out your colon to prepare you for a colonoscopy. This lets your gastroenterologist get the best view of your colon for the exam.
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MiraLAX® works as a laxative to clean out your colon (large intestine) to prepare it for a colonoscopy. MiraLAX is a laxative that softens your stool and helps you have a bowel movement. You mix MiraLAX with Gatorade® or another noncarbonated, clear beverage.
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Bowel prep is key to a successful colonoscopy because it clears out your colon. It helps your gastroenterologist best identify polyps that can sometimes become cancer during your exam. For your doctor, a clean colon is like driving on a clear, sunny day. A dirty colon is like driving in a rainstorm.
If you’re a Cleveland Clinic patient, you must follow the instructions for bowel preparation exactly as prescribed or your colonoscopy will be canceled.
Using this type of bowel preparation involves buying 64 ounces of Gatorade (most people use two 32-ounce bottles), Propel®, Crystal Light® or another non-carbonated, clear liquid sports drink. Don’t use drinks that are red, orange or purple. You’ll also need one 238-gram bottle of MiraLAX and four Dulcolax® tablets.
The following instructions are key to a successful colonoscopy:
A responsible driver must accompany you when you check for your colonoscopy. They must stay in the waiting area until you’re discharged. You’re not allowed to leave alone after your colonoscopy. If you don’t have a driver to take you home, your exam will be canceled.
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For your safety, certain medications will need to be stopped or adjusted before you can have your procedure. These include:
Medications like aspirin, antibiotics or diuretics should be taken with a sip of water on the day of the exam. If you’re unsure which medications you can continue to take, please get in touch with your healthcare provider.
Stop eating these high-fiber foods three days before your colonoscopy:
You should only drink clear liquids beginning the day before your colonoscopy. Don’t eat any solid foods.
You can continue to drink clear liquids until three hours before your colonoscopy. The table below shows what you can and can’t drink:
OK to Drink (No Red, Purple or Orange Liquids) | DO NOT DRINK |
---|---|
Gatorade or Powerade in yellow, green or blue | Alcohol |
Clear broth or bouillon | Milk or non-dairy creamer |
Coffee or tea (no milk or creamer. Sugar and sugar substitutes are OK) | Noodles or vegetables in broth |
Kool-Aid or other fruit-flavored drinks in yellow, green or blue | Liquid you can’t see through |
Strained fruit juices (no pulp) | |
Jell-O, Popsicles, hard candy (not red, purple or orange) | |
Water | |
OK to Drink (No Red, Purple or Orange Liquids) | |
Gatorade or Powerade in yellow, green or blue | |
DO NOT DRINK | |
Alcohol | |
Clear broth or bouillon | |
DO NOT DRINK | |
Milk or non-dairy creamer | |
Coffee or tea (no milk or creamer. Sugar and sugar substitutes are OK) | |
DO NOT DRINK | |
Noodles or vegetables in broth | |
Kool-Aid or other fruit-flavored drinks in yellow, green or blue | |
DO NOT DRINK | |
Liquid you can’t see through | |
Strained fruit juices (no pulp) | |
DO NOT DRINK | |
Jell-O, Popsicles, hard candy (not red, purple or orange) | |
DO NOT DRINK | |
Water | |
DO NOT DRINK | |
DO NOT DRINK | |
Note: Brand names are registered trademarks.
Take the bowel preparation in two parts with several hours between each dose. Your provider will give you specific timing instructions – be sure to follow them.
You’ll need to purchase the following (no prescriptions are needed):
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Part 1: The evening before your colonoscopy
Part 2: Six hours before your colonoscopy
Some people's bowels move slowly, and they may need different instructions. Please see your doctor for personalized bowel prep instructions if you have:
You may take extra laxatives in the days leading to your prep. This should help resolve your constipation prior to entering the bowel prep day.
Contact your physician as you’ll likely need additional bowel prep instructions.
Certain medical conditions and medications can slow bowel emptying or lead to constipation. Conditions like Parkinson’s, multiple sclerosis (MS) or using a wheelchair can slow down your digestion. Medications like narcotics, gabapentin and anticholinergic medications can also have an impact. Contact your physician and be sure to share your medical history and current medication use, as you’ll likely need extra time and additional laxatives to complete your bowel prep.
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Start your prep two to three hours earlier to allow yourself more time to complete the entire prep.
If you can’t finish your entire bowel prep, you’ll likely need to reschedule your colonoscopy due to poor prep quality.
Gastric bypass surgery involves your stomach and small bowel. It doesn’t change the length of your colon. You may need to drink smaller amounts, more slowly. You’ll need to complete the entire bowel prep, it may just take longer time to complete it.
Please consult your nephrologist before scheduling to get instructions that are specific to you. In general, dialysis patients take the Golytely bowel prep and have the procedure on the same day of their dialysis (colonoscopy in AM, dialysis in PM).
If you can pour it in a glass and you can see through it, it’s considered "clear liquid."
An adult must be present with you at check-in for your colonoscopy and remain in the endoscopy area until you’re discharged. You can hire a driver to take you home only if this adult escort is with you at check-in, remains in the endoscopy area until you’re discharged, and takes the hired ride home with you.
No, you must have an adult with you when you check in. Your responsible adult must remain in the endoscopy center during your procedure and then drive you home. You can’t drive a vehicle after your procedure for the rest of the day.
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Good bowel preparation is a critical part of your colonoscopy. Make sure to follow your gastroenterologist’s instructions. Having a clear colon makes it easier for them to detect polyps, inflammation and other abnormalities. Be sure to ask them any questions you have about mixing MiraLAX and Gatorade (or other sports drinks).
A colonoscopy or other screening is an important test for colon cancer. The team at Cleveland Clinic can give you peace of mind and expert care when you need it.
Last reviewed on 04/22/2025.
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