Substrate ·evidence-based
interventions / Magnesium / stress

Does Magnesium help stress? (Grade C evidence)

For stress, Magnesium sits at Grade C — a hint of benefit in limited trials, especially in adults, low certainty, at doses 200–400 mg.

Exact question reviewed

Population
adults
Intervention
Magnesium · 200–400 mg
Comparator
not reported
Outcome
stress
Time horizon
not reported

Bottom line. For stress, Magnesium sits at Grade C — a hint of benefit in limited trials, especially in adults, low certainty, at doses 200–400 mg. [1 RCT]

Direction
benefit
Magnitude
may modestly reduce subjective anxiety/stress, esp. in deficiency
Grade
C
Certainty
low
Clinical meaning
small but potentially useful
Who it applies to
adults
Dose / form studied
200–400 mg
Safety
minor_with_ssri
The one limitation
Claim-specific limitation details are not available in this public record.

Reviewed · Evidence last changed · Claim clm_ec_b1-mg-stress v0

⚠ Safety in context

Grade
C
what does the grade mean?
Certainty
low
what does certainty mean?

Grade C / low: hints of benefit in small trials; a well-run RCT could easily push this to B or to null.

Who it works for

Best-studied in adults. Recorded studied dose: 200–400 mg.

Evidence

StudyDesignRoleCite
The Effects of Magnesium Supplementation on Subjective Anxiety and Stress-A Systematic Reviewpeer-reviewednot classifiedPMID:28445426

Why this grade

Reasoning trace

The current record stores Grade C at low certainty and links 1 publishable source. A claim-specific domain-by-domain grading rationale is not available in this public record, so no reason for upgrading or downgrading is inferred here.

Audit and version

Claim ID
ec_b1-mg-stress
Claim version
not reported
Governance
legacy, not verified
Last evidence search
not reported
Last editorial review
2026-07-16T04:32:14.988Z

Public receipt · Machine-readable claim · Methodology

Dose & form

Studied intake: 200–400 mg.

Full dose & form comparison for Magnesium →

How it stacks up for stress

Grade history

Re-review cadence: every 6 months (Grade C+) · next scheduled by · methodology v1.

Frequently asked

How long does Magnesium take to work for stress?

Trials of Magnesium for stress typically report effects within 2–4 weeks, though individual response varies. Studies rarely find benefit inside 1 week for chronic outcomes.

What dose was used in studies of Magnesium for stress?

Studied doses for Magnesium in stress trials cluster around 200–400 mg. See the dose block for the specific range and how it varies by form.

Does Magnesium work for stress if I'm not deficient?

The effect concentrates in adults. If your baseline is normal, expect a smaller effect than the trial averages.

Magnesium or the next-best alternative for stress?

See the compare block above for the head-to-head with the most-cited alternative. Grade + certainty differences matter more than any single trial.

Related

What this is — and is not

Evidence description
may modestly reduce subjective anxiety/stress, esp. in deficiency
Substrate's interpretation
The current reviewed record assigns Grade C at low certainty. A domain-by-domain rationale is shown only when recorded.
Discuss with a clinician
If you're on medication or have a condition that changes the calculus, bring the interaction & population blocks above to your pharmacist or prescriber before deciding.
Individualized medical advice
Not provided here or on any Substrate surface (API, agent tool, embed) — see YMYL policy.

Cite this page

Citation is encouraged. The proposed reuse license is CC-BY-4.0; status: pending-governance-ratification.

Plain-text citation
Substrate. Does Magnesium help stress? (Grade C). https://evidencebased.info/interventions/magnesium/stress. Updated 2026-07-16.
BibTeX
@misc{substrate_tionsmagnesiumstress,
  author = {Substrate editorial},
  title  = {Does Magnesium help stress?},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/magnesium/stress},
  note   = {Grade C, evidencebased.info}
}

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