Substrate ·evidence-based
interventions / Creatine / strength

Does Creatine help strength? (Grade A evidence)

For strength, Creatine has Grade A evidence: repeated randomised trials converge on a real, meaningful effect, especially in training adults. Studied doses: 3–5 g/day.

Exact question reviewed

Population
training adults
Intervention
Creatine · 3–5 g/day
Comparator
not reported
Outcome
strength
Time horizon
not reported

Bottom line. For strength, Creatine has Grade A evidence: repeated randomised trials converge on a real, meaningful effect, especially in training adults. Studied doses: 3–5 g/day. [1 RCT]

Direction
benefit
Magnitude
reliable improvement in strength/power with resistance training
Grade
A
Certainty
high
Clinical meaning
moderate
Who it applies to
training adults
Dose / form studied
3–5 g/day
Safety
not assessed
The one limitation
Claim-specific limitation details are not available in this public record.

Reviewed · Evidence last changed · Claim clm_ec_creatine_strength v0

Grade
A
what does the grade mean?
Certainty
high
what does certainty mean?

Grade A / high: consistently helps at meaningful doses; new studies would need to reverse a large body of RCT evidence to change this.

Who it works for

Best-studied in training adults. Recorded studied dose: 3–5 g/day.

Evidence

StudyDesignRoleCite
International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicinepeer-reviewednot classifiedPMID:28615996 · DOI

Why this grade

Reasoning trace

The current record stores Grade A at high 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_creatine_strength
Claim version
not reported
Governance
legacy, not verified
Last evidence search
not reported
Last editorial review
2026-07-16T04:28:34.257Z

Public receipt · Machine-readable claim · Methodology

Dose & form

Studied intake: 3–5 g/day.

How it stacks up for strength

Grade history

Re-review cadence: every 12 months (Grade A/B) · next scheduled by · methodology v1.

Frequently asked

How long does Creatine take to work for strength?

Trials of Creatine for strength 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 Creatine for strength?

Studied doses for Creatine in strength trials cluster around 3–5 g/day. See the dose block for the specific range and how it varies by form.

Does Creatine work for strength if I'm not deficient?

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

Creatine or the next-best alternative for strength?

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
reliable improvement in strength/power with resistance training
Substrate's interpretation
The current reviewed record assigns Grade A at high 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 Creatine help strength? (Grade A). https://evidencebased.info/interventions/creatine/strength. Updated 2026-07-16.
BibTeX
@misc{substrate_ionscreatinestrength,
  author = {Substrate editorial},
  title  = {Does Creatine help strength?},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/creatine/strength},
  note   = {Grade A, evidencebased.info}
}

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