Constipation in children is more common than many people think, often causing considerable discomfort for children and concern for their parents. Miralax for kids is a frequently recommended over-the-counter medication. But is it safe for children? What is its mechanism of action? And what is the correct way to use it?
What is Miralax
Miralax, generically known as polyethylene glycol 3350, is a laxative that works by attracting water into the colon, which helps in softening the stools and encourage regular bowel movements. It is tasteless, odorless, and dissolves easily in liquids, making it a convenient option to give to children.
Is Miralax for Kids is safe?
Miralax is not officially approved by the FDA for use in children; however, many pediatricians often recommend it for both short-term and in some cases long-term treatment of chronic constipation in children. When administered according to the instructions of a healthcare professional, it is considered safe and effective.
There has been some debate about its long-term use and potential behavioral side effects. Current research is investigating these concerns, and many pediatric gastroenterologists continue to support its use while keeping a close eye on its effects.

How to Use Miralax for Kids
Dosage:
Always consult your pediatrician for the correct dosage. A typical starting dose is half to one capful (8.5g to 17g) mixed with water and given to the child once a day.
Mixing:
Mix it with water, juice or any other drink of your choice and give it to the child. It will dissolve well in it and it is usually tasteless.
When to Take:
It can be taken at any time of the day, although some parents prefer to give it in the morning.
Tips for Success
- You can encourage your child to drink plenty of water during the day.
- Use as much fiber as possible in the child’s diet
- Create a regular toilet routine—especially after meals.
- Keep in touch with a pediatrician, especially if it is being used for a long time
FAQs: Miralax for Kids
Can I give my child Miralax without a doctor’s approval?
It is always best to talk to a pediatrician before giving Miralax to your child, especially if it is being used for a long time.
How quickly does Miralax work in children?
In most of children Miralax usually works within 12 to 72 hours after the first dose.
Are there any side effects in Miralax for kids?
Common side effects may include;
- Bloating
- Gas
- Stomach cramps
- Loose stools
However, these side effects are seen in only a few children, which are reported by their parents.
How long can my child stay on Miralax?
Some children need it for a few days, some for weeks and some for months. Do not use it for a long time without consulting a doctor.
Is Miralax habit-forming?
Miralax is not considered for habit forming. However, even if the problem is not resolved, using it for a long time can affect natural bowel movement.
Can I mix Miralax with milk or juice?
Yes, you can mix it with water, juice, milk or non-carbonated beverage as per taste.
What if Miralax doesn’t help my child?
If it doesn’t work within a few days or experiences pain, vomiting, or worsening symptoms, stop using it and consult your pediatrician as soon as possible.
Final Thoughts
Constipation can be very troublesome for children and their parents, and miralax is a commonly used solution for constipation. It can be most effective if used responsibly and correctly. Using it in consultation with a pediatrician will have positive effects on your child’s health and comfort.
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