Does Ginkgo help cognition? (Grade C evidence)
Ginkgo shows a Grade C benefit for cognition: small trials suggest a modest effect, low certainty. Dose range not specified.
Exact question reviewed
- Population
- not reported
- Intervention
- Ginkgo
- Comparator
- not reported
- Outcome
- cognition
- Time horizon
- not reported
Bottom line. Ginkgo shows a Grade C benefit for cognition: small trials suggest a modest effect, low certainty. Dose range not specified. [1 RCT]
- Direction
- benefit
- Magnitude
- no reliable benefit for preventing cognitive decline in large trials
- Grade
- C
- Certainty
- low
- Clinical meaning
- small but potentially useful
- Who it applies to
- —
- Dose / form studied
- not reported
- Safety
- serious_with_warfarin; moderate_with_ssri
- The one limitation
- Claim-specific limitation details are not available in this public record.
Reviewed · Evidence last changed · Claim clm_ec_ginkgo_cog v0
⚠ Safety in context
- seriouswith Warfarin: Ginkgo has antiplatelet activity; with warfarin it may increase bleeding risk. full interaction →
- moderatewith SSRI: Possible additive bleeding/serotonergic effects with SSRIs. full interaction →
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
The studied population is not reported in this public record.
Evidence
| Study | Design | Role | Cite |
|---|---|---|---|
| Ginkgo biloba for prevention of dementia: a systematic review and meta-analysis | peer-reviewed | not classified | PMID:26058281 |
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_ginkgo_cog
- Claim version
- not reported
- Governance
- legacy, not verified
- Last evidence search
- not reported
- Last editorial review
- 2026-07-16T04:25:50.928Z
People say · Evidence shows
“Ginkgo prevents dementia and boosts memory”
Evidence: Grade C — no reliable benefit for preventing cognitive decline in large trials.
How it stacks up for cognition
- Ginkgo vs Creatine for cognition — Creatine Grade B
- Ginkgo vs Caffeine for cognition — Caffeine Grade A
- Ginkgo vs Lion's Mane for cognition — Lion's Mane Grade C
- Ginkgo vs L-Theanine for cognition — L-Theanine Grade C
- Ginkgo vs Iron for cognition — Iron Grade C
- Ginkgo vs Ashwagandha for cognition — Ashwagandha Grade C
- All interventions graded for cognition →
Grade history
- C → CCorrection by Claude (gold-standard provenance sweep): live Postgres source drift replaced with the verified seed source set [pmid-26058281] details →
- B → CA large dementia-prevention trial reported a null result. details →
Re-review cadence: every 6 months (Grade C+) · next scheduled by · methodology v1.
Frequently asked
How long does Ginkgo take to work for cognition?
Trials of Ginkgo 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 Ginkgo for cognition?
Studied doses for Ginkgo in cognition trials cluster around a moderate daily dose. See the dose block for the specific range and how it varies by form.
Does Ginkgo 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.
Ginkgo 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
- no reliable benefit for preventing cognitive decline in large trials
- 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 Ginkgo help cognition? (Grade C). https://evidencebased.info/interventions/ginkgo/cognition. Updated 2026-07-16.
BibTeX
@misc{substrate_tionsginkgocognition,
author = {Substrate editorial},
title = {Does Ginkgo help cognition?},
year = {2026},
url = {https://evidencebased.info/interventions/ginkgo/cognition},
note = {Grade C, evidencebased.info}
}Found something wrong on this page? Report an error →