Evidence-backed FAQ
Does magnesium help constipation?
Direct answer
A small randomized trial found that magnesium oxide improved symptoms and bowel-movement frequency more than placebo over 28 days in adults with chronic idiopathic constipation.[1]
What the evidence shows
Magnesium oxide acts as an osmotic laxative. The supporting review emphasizes attention to dose, serum magnesium, drug interactions, and kidney function.[2]
Important limitations
The evidence comes from one 90-person short-term trial and a narrative review. People with impaired kidney function, older adults, and people taking medicines need individualized guidance because magnesium can accumulate or interact with treatment.[1], [2]
Related questions
- Which magnesium form was studied?
- Who should be especially cautious?
Read the full evidence summary
This FAQ is the concise answer. The linked research page provides the full study context, populations, doses, outcomes, and limitations.
References
- Senna Versus Magnesium Oxide for the Treatment of Chronic Constipation: A Randomized, Placebo-Controlled Trial.. The American journal of gastroenterology. 2021. Randomized controlled trial View source →
- Magnesium Oxide in Constipation.. Nutrients. 2021. Narrative review View source →