Does Creatine help cognition? (Grade B evidence)
Creatine shows a Grade B benefit for cognition — moderate-certainty evidence from randomised trials. Typical studied doses are 5 g/day.
Bottom line. Creatine shows a Grade B benefit for cognition — moderate-certainty evidence from randomised trials. Typical studied doses are 5 g/day. [1 RCT]
- Direction
- benefit
- Magnitude
- Meta-analysis of 16 RCTs (n≈492 adults): improved memory, attention, and processing speed; no significant effect on overall or executive function.
- Grade
- B
- Certainty
- moderate
- Clinical meaning
- small but potentially useful
- Who it applies to
- adults
- Dose / form studied
- Safety
- none identified in this claim
- The one limitation
- Sample sizes are small in most included trials; effect sizes may shrink with larger studies.
Reviewed · Evidence last changed · Claim clm_ec_creatine_cog v1
Grade B / moderate: probably helps, and new studies are unlikely to reverse this — but could shrink the effect size.
Who it works for
Studied broadly; population-specific effect data is thin. Effective doses cluster around 5 g/day.
Evidence
| Study | Design | Cite |
|---|---|---|
| The effects of creatine supplementation on cognitive function in adults: a systematic review and meta-analysis. | — | PMID:39070254 |
Why this grade
Reasoning trace
Grade B at moderate certainty. The grade reflects the direction and size of the effect across the 1 publishable source above; certainty reflects heterogeneity, sample sizes, and design quality. What would move it upward: additional well-powered RCTs in the target population that replicate the effect at similar doses. What would move it down: a large null trial, discovery of publication bias, or a retraction of a keystone study.
Dose & form
Studied intake: 5 g/day.
People say · Evidence shows
“Creatine only helps muscles, not the brain”
Evidence: Grade B — Meta-analysis of 16 RCTs (n≈492 adults): improved memory, attention, and processing speed; no significant effect on overall or executive function..
How it stacks up for cognition
- Creatine vs Omega-3 for cognition — Omega-3 Grade —
- Creatine vs Lion's Mane for cognition — Lion's Mane Grade C
- Creatine vs Caffeine for cognition — Caffeine Grade A
- Creatine vs Ginkgo for cognition — Ginkgo Grade C
- Creatine vs L-Theanine for cognition — L-Theanine Grade C
- Creatine vs Iron for cognition — Iron Grade C
- All interventions graded for cognition →
Grade history
- C → BNew RCTs on cognitive performance (notably under sleep deprivation) strengthened the grade. details →
Re-review cadence: every 12 months (Grade A/B) · next scheduled by · methodology v1.
Frequently asked
How long does Creatine take to work for cognition?
Trials of Creatine for cognition 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 cognition?
Studied doses for Creatine in cognition trials cluster around 5 g/day. See the dose block for the specific range and how it varies by form.
Does Creatine work for cognition if I'm not deficient?
The effect concentrates in people with lower baseline levels or heavier symptoms. If your baseline is normal, expect a smaller effect than the trial averages.
Creatine or the next-best alternative for cognition?
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
- Meta-analysis of 16 RCTs (n≈492 adults): improved memory, attention, and processing speed; no significant effect on overall or executive function.
- Substrate's interpretation
- Grade B at moderate certainty — the direction and size the studies converge on, as our reading of the corpus.
- 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
Reuse under CC-BY 4.0 with attribution to evidencebased.info.
Plain-text citation
Substrate. Does Creatine help cognition? (Grade B). https://evidencebased.info/interventions/creatine/cognition. Updated 2026-05-02.
BibTeX
@misc{substrate_onscreatinecognition,
author = {Substrate editorial},
title = {Does Creatine help cognition?},
year = {2026},
url = {https://evidencebased.info/interventions/creatine/cognition},
note = {Grade B, evidencebased.info}
}Found something wrong on this page? Report an error →