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Best Magnesium to Help Kids Poop

Medically Reviewed by May Zhu, RDN | Published January 30, 2025

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Constipation in kids is a common concern that can cause discomfort, irritability, and stress for both parents and kids.

Magnesium, an essential mineral, has gained recognition as a gentle, natural remedy for constipation in kids. It works by relaxing the intestinal muscles, softening stools, and promoting healthy bowel movements.

Here’s a guide to the best forms of magnesium to help kids poop and how to use them safely and effectively.

How Magnesium Supports Constipation Symptoms

Magnesium works as an osmotic laxative, meaning it draws water into the intestines, softening stools and making them easier to pass.

It also relaxes the intestinal muscles, which encourages smoother movement of waste through the digestive system.

For kids struggling with occasional or chronic constipation, magnesium offers a safe and natural alternative to stimulant laxatives.

Best Forms of Magnesium for Kids

When choosing a magnesium supplement for constipation relief, it’s essential to select a form that is both effective and safe for toddlers and kids.

  1. Magnesium Citrate
    Magnesium citrate is one of the most effective forms for relieving constipation. It works quickly by drawing water into the intestines, making stools softer and easier to pass.

    Start with a low dose to avoid loose stools or diarrhea and consult a pediatrician for guidance on appropriate dosing.

  2. Magnesium Hydroxide
    Commonly known as milk of magnesia, magnesium hydroxide is widely used for short-term relief of constipation. It acts as both a stool softener and a gentle laxative.

    Milk of magnesia is available in liquid form and is easy to administer to kids, but it should be used sparingly and not as a long-term solution.

  3. Magnesium Glycinate
    While magnesium glycinate is better known for its calming effects and use in anxiety management, it can also help with mild constipation.

    It’s gentle on the stomach and less likely to cause diarrhea, making it a good option for kids who need a dual benefit of relaxation and digestive support.

  4. Magnesium Oxide
    Magnesium oxide is less absorbable but effective as a laxative due to its ability to draw water into the colon.

    However, it may be harsher on sensitive stomachs, so it’s best reserved for occasional use under a doctor’s supervision.

How to Safely Use Magnesium for Constipation

  • Dosage: Always follow your pediatrician’s guidance for magnesium dosage based on your kid’s age and weight. Overuse can lead to diarrhea or electrolyte imbalances.

  • Hydration: Encourage your kid to drink plenty of water while using magnesium to enhance its effectiveness and prevent dehydration.

  • Dietary Support: Pair magnesium supplements with a diet rich in fiber from fruits, vegetables, and whole grains to maintain regular bowel movements naturally.

Summary

Magnesium citrate and magnesium hydroxide are the best options for relieving constipation in kids, thanks to their stool-softening and gentle laxative effects.

Used safely and with a doctor’s guidance, magnesium can help restore comfort and regularity in your kid’s digestive system.

View Citation

  • National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). (2021). Constipation in children. Retrieved from https://www.niddk.nih.gov
  • Fine, K. D., & Schiller, L. R. (1999). AGA technical review on the evaluation and management of chronic diarrhea. Gastroenterology, 116(6), 1464–1486. https://doi.org/10.1016/S0016-5085(99)70510-5
  • Schuette, S. A., Lashner, B. A., & Janghorbani, M. (1994). Bioavailability of magnesium diglycinate vs magnesium oxide in patients with ileal resection. JPEN Journal of Parenteral and Enteral Nutrition, 18(5), 430–435. https://doi.org/10.1177/0148607194018005430