Evidence map›Paper›PMID 25506211›Full record

SynthesisClinical interventions in aging2014

Efficacy and tolerability of Ginkgo biloba extract EGb 761® in dementia: a systematic review and meta-analysis of randomized placebo-controlled trials.

Serge Gauthier, Sandra Schlaefke

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Clinical interventions in aging, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 9 pooled it
43.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

80 citing papers in PubMed, 9 syntheses or guidelines pooled it, 164 citations in OpenAlex.

  1. Efficacy and safety ofFrontiers in pharmacology · 2026
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Dietary Flavonoids and Human Cognition: A Meta-Analysis.Molecular nutrition & food research · 2022
    Pooled it
  5. Oxidative medicine and cellular longevity · 2021
    Pooled it
  6. Effects of saffron (Crocus sativus L.) on cognitive function. A systematic review of RCTs.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2020
    Pooled it
  7. Pooled it
  8. Guideline
  9. Clinical interventions in aging · 2018
    Pooled it
  10. Current neuropharmacology · 2024
    Trial
  11. Trial
  12. Trial
  13. Trial
  14. Trial
  15. Trial
  16. Efficacy of EGb 761Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale
    Trial
  17. Review
  18. Review
  19. Article
  20. Journal of clinical medicine · 2025
    Article

20 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Serge GauthierAlzheimer Disease Research Unit, Memory Clinic, McGill Centre for Studies in Aging, McGill University, Verdun, QC, Canada.
Sandra SchlaefkeClinical Research Department, Dr Willmar Schwabe GmbH & Co. KG, Karlsruhe, Germany.
Dr Willmar Schwabe (Germany) · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The objective of this systematic review was to evaluate current evidence for the efficacy of Ginkgo biloba extract EGb 761(®) in dementia. Seven of 15 randomized, placebo-controlled trials in patients with dementia identified by database searches met all our selection criteria and were included in the meta-analysis. In these trials, patients were treated with 120 mg or 240 mg per day of the defined extract EGb 761 or placebo. Efficacy was assessed using validated tests and rating scales for the cognitive domain, the functional domain (activities of daily living), and global assessment. Tolerability was evaluated by risk differences based on incidences of adverse events and premature discontinuation rates. Of 2,684 outpatients randomized to receive treatment for 22-26 weeks, 2,625 represented the full analysis sets (1,396 for EGb 761 and 1,229 for placebo). Standardized mean differences for change in cognition (-0.52; 95% confidence interval [CI] -0.98, -0.05; P=0.03), activities of daily living (-0.44; 95% CI -0.68, -0.19; P<0.001), and global rating (-0.52; 95% CI -0.92, -0.12; P=0.01) significantly favored EGb 761 compared with placebo. Statistically significant superiority of EGb 761 over placebo was confirmed by responder analyses as well as for patients suffering from dementia with neuropsychiatric symptoms. Treatment-associated risks in terms of relative risks of adverse events and premature withdrawal rates did not differ noticeably between the two treatment groups. In conclusion, meta-analyses confirmed the efficacy and good tolerability of Ginkgo biloba extract EGb 761 in patients with dementia.

Indexed as

Activities of Daily LivingAlzheimer DiseaseCognitionDementiaGinkgo bilobaGinkgo ExtractHumansPlant ExtractsRandomized Controlled Trials as TopicGinkgo biloba extractGinkgo ExtractPlant ExtractsAlzheimer’s diseaseefficacymixed dementiasafetyvascular dementia

Identifiers

PMID25506211
PMCPMC4259871
OpenAlexW1973101326

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.