Remedy Routes
    MagnesiumtoAnxiety(not yet rated)
    Condition
    Effectiveness 2/5

    Magnesium for Anxiety

    Magnesium supplementation produces small subjective anxiety improvements in some trials, with the most credible signal in people who are magnesium-depleted or experiencing premenstrual anxiety.

    Overview

    For food sources of magnesium, see our guide to magnesium-rich foods.

    How It Works

    Magnesium regulates NMDA receptor activity, supports GABA-ergic inhibition and dampens hypothalamic-pituitary-adrenal axis reactivity — the three systems most implicated in anxiety physiology.

    Dosing & Protocol

    For how soon mood effects showed up in trials, see our guide on how long magnesium takes to work.

    Wondering which form to try? Our guide to magnesium threonate vs glycinate compares their evidence for anxiety, sleep and memory.

    Evidence

    What the studies say

    Systematic reviews of small trials find modest reductions in subjective anxiety scores with magnesium supplementation, but study quality is low and blinding is difficult. The signal is most consistent in people with low baseline magnesium status and in premenstrual anxiety. Trials in unselected anxious populations are weaker, suggesting magnesium corrects a deficiency-driven contribution rather than acting as a general anxiolytic.

    Role of magnesium supplementation in the treatment of depression: A randomized clinical trial

    Score: 5/10
    2017n=126

    Tarleton EK, Littenberg B, MacLean CD +1 more

    Magnesium is effective for mild-to-moderate depression in adults. It works quickly and is well tolerated without the need for close monitoring for toxicity.

    View source

    A synergistic effect of a daily supplement for 1 month of 200 mg magnesium plus 50 mg vitamin B6 for the relief of anxiety-related premenstrual symptoms: a randomized, double-blind, crossover study

    Score: 6/10
    2000
    crossover
    n=44

    De Souza MC, Walker AF, Robinson PA +1 more

    A small synergistic effect of a daily dietary supplementation with a combination of Mg + vitamin B6 in the reduction of mild premenstrual anxiety-related symptoms was demonstrated during treatment of 44 women for one menstrual cycle.

    View source

    Magnesium supplementation and subjective anxiety: a systematic review

    Score: 6/10
    2017
    systematic_review

    Boyle NB, Lawton C, Dye L

    Existing evidence is suggestive of a beneficial effect of Mg on subjective anxiety in anxiety vulnerable samples. However, the quality of the existing evidence is poor.

    View source

    The Effects of Magnesium Supplementation on Subjective Anxiety and Stress-A Systematic Review

    Score: 6/10
    2017
    systematic_review

    Boyle NB, Lawton C, Dye L

    Magnesium produced modest reductions in subjective anxiety and stress-hormone reactivity

    View source

    Examining the Effects of Supplemental Magnesium on Self-Reported Anxiety and Sleep Quality: A Systematic Review

    Score: 6/10
    2024
    systematic_review

    Rawji A, et al.

    Given the generally positive results across studies, the preponderance of preclinical evidence, and minimal side effects, however, supplemental magnesium is likely useful in the treatment of mild anxiety and insomnia, particularly in those with low magnesium status at baseline.

    View source

    Safety

    Caveats

    {"Effect is clearest where baseline magnesium is low","Gastrointestinal upset limits dose escalation for some","Does not treat an anxiety disorder — persistent symptoms need proper assessment"}

    Less likely to help if

    People with adequate magnesium status and primary anxiety disorders are unlikely to notice meaningful change; addressing sleep, caffeine and the underlying condition matters more.

    Medical Disclaimer

    The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.