Childhood Dosing for MiraLAX

MiraLAX® (polyethylene glycol 3350) is a laxative approved for relieving occasional constipation in adults. However, this laxative is sometimes used off-label to treat constipation in children. If your child's healthcare provider recommends MiraLAX, follow his or her specific childhood dosing instructions.
 
This laxative comes as a powder, which should be dissolved in four to eight ounces of liquid and swallowed by mouth. It is usually used once a day. It may take up to four days after a child starts using this product to have a bowel movement. Do not give more than the standard dosage if this happens. Also, do not give a child MiraLAX for more than seven days unless a healthcare provider tells you to do so.
 
(Click MiraLAX Dosage for a more in-depth look at childhood dosing guidelines for this laxative. This article also offers dosing recommendations for adults, as well as important tips for when and how to use MiraLAX.)
Written by/reviewed by: Susan Lakey, PharmD, MPH
Last reviewed by: Kristi Monson, PharmD
 
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