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Ginkgo

What does the research say about Ginkgo?

3 health outcomes synthesised

Ginkgo biloba extract has been researched for 3 health outcomes, with the strongest evidence supporting its use for improving activities of daily living in people with dementia or mild cognitive impairment (5 studies, high evidence strength). The standardized EGb 761 extract at 240 mg daily is the most studied dose, with effects typically observed over several months.

Strongest evidence: Ginkgo's strongest evidence is for Improved Activities of Daily Living (high evidence strength). Across 5 studies, all reported beneficial effects, with effect sizes predominantly small. Moderate-sized effects were seen in subgroup analyses of patients with mild dementia. The most studied dose is 240 mg daily of standardized EGb 761 extract.

Mixed or weaker evidence: For Improved Cognitive Function (moderate evidence strength), 7 of 9 studies reported benefits, but effect sizes were mixed and the highest-quality systematic review (n=3582) found neutral effects, suggesting possible publication bias. For Improved Memory Function (low evidence strength), all 3 studies reported benefits, but the evidence base is small and considered preliminary.

Effective dose patterns: Across outcomes, 240 mg daily of EGb 761 extract is the most consistent effective dose for activities of daily living and cognitive function. For memory function, the frequently studied dose is 120 mg twice daily.

Population insights: Effects are most consistently observed in elderly clinical populations with mild cognitive impairment, dementia, or post-stroke cognitive impairment. For memory function, benefits were also noted in healthy adults, but the evidence is limited.

Notable caveats: The clinical literature across these outcomes is subject to publication bias (null-result studies are less likely to be published). Many studies combined ginkgo with other interventions, making it difficult to isolate its independent effect. Only 2 of 9 cognitive function studies reported treatment duration, limiting conclusions about optimal length of use.

Frequently asked

  • What is Ginkgo good for according to research?
    Research shows Ginkgo may support activities of daily living in people with dementia or mild cognitive impairment (5 studies, high evidence strength). Effects on cognitive function are mixed (7 of 9 studies show benefit, but the largest study found neutral effects), and memory function benefits are supported by only 3 preliminary studies.
  • What dose of Ginkgo is typically used in studies?
    The most studied dose is 240 mg daily of the standardized EGb 761 extract for activities of daily living and cognitive function. For memory function, the frequently studied dose is 120 mg twice daily. Effects are typically observed over several months of use.
  • Who benefits most from Ginkgo?
    Elderly clinical populations with mild cognitive impairment, dementia, or post-stroke cognitive impairment appear to benefit most. For memory function, healthy adults also showed benefits, though the evidence is limited to 2 studies.
  • Are there caveats or limitations in the research on Ginkgo?
    Yes. The clinical literature is subject to publication bias, as null results are less likely to be published. Many studies combined ginkgo with other interventions, making it difficult to isolate its independent effect. For cognitive function, only 2 of 9 studies reported treatment duration, and the highest-quality review found neutral effects.
  • Does Ginkgo help with memory function?
    The evidence is preliminary. All 3 studies reported beneficial effects on memory, with effect sizes ranging from small to moderate. However, the evidence base is small (low evidence strength) and subject to publication bias, so conclusions should be considered tentative.
  • How strong is the evidence for Ginkgo and cognitive function?
    The evidence is moderate. While 7 of 9 studies showed benefits, effect sizes varied substantially (small to large) and the largest systematic review (n=3582) found neutral effects, suggesting possible publication bias. The most studied dose was 240 mg daily of EGb 761.

Safety profile

7 studies reporting safety data1 serious adverse event

Across 7 clinical studies, no specific adverse events were significantly increased with Ginkgo compared to control. Three studies reported no significant difference in overall adverse event rates (e.g., p=0.66), and multiple studies described the supplement as generally well tolerated. One study reported two serious adverse events (1.3% of patients) but deemed them unrelated to the study drug.

Caveats: Evidence is limited to short-term studies (most ≤8 weeks) and studies were not specifically powered for safety; rare adverse events may not be detected. The findings reflect the specific formulations used in trials and may not generalize to other products.

Most-studied combinations with Ginkgo

most supplement research is combination research
Also studied with:Lemon Balm (3), St. John's Wort (2), Passion Flower (2), Turmeric (2), Resveratrol (2), Saffron (2), Red Grape (2), Pine (2), Vitamin E (2), Ginseng (2)

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