Skip to main content
Supplement ScienceSupplementScience

Magnesium Research & Evidence

·

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Evidence Level

Strong

Magnesium supplementation has a robust evidence base. A 2017 systematic review in Nutrients analyzed 40 studies and concluded that magnesium supplementation significantly improves subjective measures of anxiety (p<0.01). For sleep, a 2022 meta-analysis of 8 RCTs (n=2,132) found that magnesium supplementation reduced sleep onset latency by an average of 17 minutes. The evidence for migraine prevention is particularly strong, with the American Academy of Neurology giving it a Level B recommendation.

Evidence by Condition

ConditionStudied DoseEvidence
Sleep support200-400mg glycinate, 30-60 min before bedStrong
Anxiety200-400mg glycinate, divided dosesModerate
Migraine prevention400-600mg dailyStrong
Muscle cramps200-400mg dailyModerate
Constipation200-400mg citrateStrong

Related Research Summaries

Magnesium for Anxiety: 2017 Randomized Controlled Trial
rct · 264 participants
Magnesium and Sleep: 2023 Meta-Analysis of 8 RCTs
meta-analysis · 2,132 participants
See which Magnesium products match the research
Products ranked against the clinical evidence
Full Magnesium Guide

References

  1. ReviewBoyle NB, Lawton C, Dye L (2017). The Effects of Magnesium Supplementation on Subjective Anxiety and Stress—A Systematic Review. Nutrients. DOI PubMed
  2. ReviewArab A, Rafie N, Amani R, Shirani F (2023). The Role of Magnesium in Sleep Health: a Systematic Review of Available Literature. Biological Trace Element Research. DOI PubMed
  3. Meta-analysisArgeros Z, Xu X, Bhandari B, Harris K, et al. (2025). Magnesium Supplementation and Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.. Hypertension (Dallas, Tex. : 1979). DOI PubMed
  4. Meta-analysisChen F, Wang J, Cheng Y, Li R, et al. (2024). Magnesium and Cognitive Health in Adults: A Systematic Review and Meta-Analysis.. Advances in nutrition (Bethesda, Md.). DOI PubMed
  5. Meta-analysisCurran J, Ross-White A, Sibley S (2023). Magnesium prophylaxis of new-onset atrial fibrillation: A systematic review and meta-analysis.. PloS one. DOI PubMed
  6. Meta-analysisGroenendijk I, van Delft M, Versloot P, van Loon LJC, et al. (2022). Impact of magnesium on bone health in older adults: A systematic review and meta-analysis.. Bone. DOI PubMed