Condition
    Moderate Evidence
    Effectiveness 3/5

    Magnesium for ADHD (Attention Deficit Hyperactivity Disorder)

    Children with ADHD show lower average magnesium status in observational work, and small trials pairing magnesium with vitamin B6 report symptom improvement. The trials are methodologically weak, so this is best viewed as correcting a deficiency rather than treating ADHD.

    Overview

    Children with ADHD show lower average magnesium status in observational work, and small trials pairing magnesium with vitamin B6 report symptom improvement. The trials are methodologically weak, so this is best viewed as correcting a deficiency rather than treating ADHD.

    Verdict

    Insufficient evidence

    How It Works

    Magnesium is a cofactor for over 300 enzymatic reactions and acts as a physiological NMDA-receptor antagonist, damping glutamatergic excitation. It also participates in the synthesis of dopamine and serotonin, giving a plausible link to attention and impulse regulation. The more defensible framing is deficiency correction. Case-control studies repeatedly find lower serum and erythrocyte magnesium in children with ADHD than in controls; if low magnesium contributes to irritability, poor sleep and hyperexcitability, repletion may improve those features without acting on the disorder itself.

    Dosing & Protocol

    Typical dose

    Recommended dose
    400-600mg elemental magnesium daily
    Expected timeframe
    6-8 weeks

    Protocol

    form
    Magnesium glycinate or citrate - oxide is poorly absorbed
    duration
    8 weeks
    co factor
    Evidence is insufficient: supportive trials were small, mostly in magnesium-deficient children, and often paired with vitamin B6. Do not stop prescribed ADHD medication.
    titration
    Increase to 300-400 mg after two weeks if stools remain normal
    starting dose
    200 mg elemental magnesium with food in the evening

    Evidence

    What the studies say

    Several small trials, mostly from European groups, have combined magnesium with vitamin B6 and reported reductions in hyperactivity and inattention scores in children over 8 weeks to 6 months. Observational studies consistently find lower magnesium status in ADHD cohorts than in matched controls. The trials are limited by small samples, absent or inadequate blinding, and the confound of co-administered B6, which makes the contribution of magnesium alone impossible to isolate. Systematic reviews conclude that evidence is insufficient to recommend magnesium as an ADHD treatment. Testing magnesium status and correcting a documented shortfall is a reasonable step; expecting stimulant-like effects is not.

    No studies are yet linked to both Magnesium and ADHD (Attention Deficit Hyperactivity Disorder).

    Safety

    Caveats

    Safety ceiling: the tolerable upper intake from supplements is 350 mg/day for adults and lower in children; higher doses cause diarrhoea. Magnesium reduces absorption of tetracyclines, quinolones, levothyroxine and bisphosphonates - separate by four hours. Dangerous accumulation in renal impairment.

    Less likely to help if

    Children and adults with adequate magnesium status, and anyone expecting change in core inattention rather than restlessness or sleep.

    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.