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Does magnesium help with bloating and digestion?

Medically reviewed by Kristianne Hannemann, PharmD. Last updated on June 3, 2025.

Official Answer by Drugs.com

Yes, magnesium can help with bloating and digestion in several ways. Millions of people struggle with digestive discomfort, including bloating and constipation. Some types of magnesium have a laxative effect, and it can support digestion in other ways as well. In this article, we will discuss how magnesium may help with digestion and bloating.

How Magnesium Supports Digestive Health

Magnesium plays an important role in digestive function through several mechanisms. Research shows that magnesium is essential for digestive enzymes needed to break down carbohydrates. Additionally, some forms of magnesium act as a laxative, while others can help neutralize stomach acid.

Studies have demonstrated an inverse relationship between magnesium intake and constipation, meaning people who have low levels of magnesium might suffer from more constipation. Constipation can lead to symptoms like bloating and discomfort.

Laxative Effects

One of magnesium's primary effects on digestion involves its ability to stimulate movement in the gastrointestinal tract. In particular, magnesium oxide and magnesium citrate have been used as effective laxatives for decades. Magnesium functions as an osmotic laxative, meaning it attracts water into the intestines. Some forms of magnesium are poorly absorbed, drawing more watering into the intestines. This increased water content helps soften stool and increases stool size, making it easier to pass through the gastrointestinal tract. By relieving constipation, magnesium can reduce symptoms of bloating.

Effects on Gut Microbiome and Inflammation

Research is limited on the effects of magnesium on gut microbiome. However, some animal studies have shown that magnesium may support diverse microbiota, which can in turn have a positive effect on gut health. Additionally, magnesium deficiency has been linked to low levels of beneficial bacteria in animals. Another small study in humans showed that patients taking probiotics with magnesium had lower levels of an inflammatory marker compared to patients taking probiotics and a placebo. More research is needed to understand the effects of magnesium on the gut microbiome and inflammation.

Stomach Acid Neutralization

Magnesium can help neutralize excess stomach acid, providing relief from heartburn and indigestion, which can sometimes contribute to bloating. Common products found over the counter that contain magnesium and work as an antacid include Rolaids and Gaviscon.

Related questions

Which Type of Magnesium for Bloating and Digestion?

For digestive issues like constipation and bloating, certain forms of magnesium are more effective:

Important Considerations and Side Effects

While magnesium offers digestive benefits, proper dosing and form selection are important. Excessive magnesium intake can lead to side effects that range from mild to severe.

Potential Side Effects:

It is important to consult with a healthcare professional before starting magnesium supplementation. If you experience persistent bloating, speak to a healthcare professional to rule out any underlying medical conditions like Irritable Bowel Syndrome (IBS) or Crohn's Disease.

Summary

In summary, magnesium can be a beneficial aid for bloating and digestion, particularly when constipation is a contributing factor. Different forms of magnesium have varying effects, so choosing the right one for your specific needs is important.

References
  1. Fiorentini, D., et. al. 2021. Magnesium: Biochemistry, Nutrition, Detection, and Social Impact of Diseases Linked to Its Deficiency. Nutrients, 13(4), 1136. https://doi.org/10.3390/nu13041136
  2. Mahboobi, S., et. al. 2022. Effects of probiotic and magnesium co-supplementation on mood, cognition, intestinal barrier function and inflammation in individuals with obesity and depressed mood: A randomized, double-blind placebo-controlled clinical trial. Frontiers in nutrition, 9, 1018357. https://doi.org/10.3389/fnut.2022.1018357
  3. Mori, H., et. al. 2021. Magnesium Oxide in Constipation. Nutrients, 13(2), 421. https://doi.org/10.3390/nu13020421
  4. National Institutes of Health. 2022. Magnesium Fact Sheet for Health Professionals. Accessed on June 3, 2025 at https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional 
  5. Veronese, N., et. al. 2022. Effect of Magnesium Supplementation on Inflammatory Parameters: A Meta-Analysis of Randomized Controlled Trials. Nutrients, 14(3), 679. https://doi.org/10.3390/nu14030679

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