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Children's Hospital of Orange County

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Questions about your child's health? Call our free 24/7 Nurse Advice Line 844-GET-CHOC.

Home » Gastroenterology » Bowel Clean Out With Miralax

Bowel Clean Out With Miralax

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Call today to schedule an appointment with one of our pediatric specialists.

Call 888-770-2462
Gastroenterology Referrals
Physicians can refer patients to CHOC through our eCeptionist Referral Portal.

View the referral guidelines


Refer a Patient

Some conditions, such as severe constipation, may require a child have his or her bowel cleaned out. Our health care team has designed a bowel clean out program based on a patient’s weight. These instructions are to be followed by CHOC’s gastroenterology patients who have been instructed by our specialist to begin a bowel clean out regimen.

Your child weighs about:

Less than 22 poundsGive 1/3 capful, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
23 – 33 poundsGive ½ capful, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
34 – 44 poundsGive ½ capful, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
45 – 55 poundsGive ¾ capful, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
56 – 66 poundsGive 1 capful, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
67 – 77 poundsGive 1 capful, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
78 – 88 poundsGive 1 capful, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
89 – 99 poundsGive 1 capfuls, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.
100 – 110 poundsGive 1 ½ capfuls, 3 times each day for 2 days. Give at 8 a.m., noon and 4 p.m.

In addition to the Miralax, the child needs to drink one cup of liquid at least 8 times per day for the 2 days that they are on this clean out program. A cup is equal to 8 ounces of liquid. The child can eat food that is easy for their stomach to process for these two days. Good food choices include applesauce, yogurt, oatmeal, mashed potatoes, soup broth and toast with butter. Drinking a lot of clear liquids will often help them avoid feeling hungry. During the bowel clean out, please plan on being at home for three days because bowel movements will be frequent and hard to predict. It may take three days to completely cleanse the bowel. Once clean out is finished, give a dose of Miralax 1 time each day. The Miralax can be mixed with water or juice. The juice does not have to be clear. The dose is based on your child’s age (not weight):

Children under 5 years oldGive ½ capful mixed into ½ to 1 cup of water or juice
Children 5 to 12 years oldGive ¾ capful mixed in 1 cup of water or juice
Children 12 years old and olderGive 1 capful, mixed in 1 cup of water or juice

One of our pediatric gastroenterology specialists may adjust the child’s dose based on how the program is working. When the child has soft but formed (Type 4 stool on the Bristol Stool Chart) and easily passable bowel movements each day, we know the program is working.

Bristol Stool Chart, showing range of poop textures from hard and lumpy to watery

Disclaimer: These instructions are general guidelines and should be used for informational purposes only, not medical advice. They are intended for CHOC’s patients. Specific instructions for your child may differ. Please follow instructions provided by your child’s physician and CHOC Gastroenterology staff.

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1201 W La Veta Ave
Orange, CA 92868

(714) 997-3000

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