Ginkgo Biloba Supplements: Benefits, Dosage and Safety
Ginkgo supplements are among the best-selling memory products, yet a large trial of more than 3,000 older adults found ginkgo didn't prevent dementia or memory decline. Evidence for tinnitus is also negative. Ginkgo may increase bleeding risk.
Evidence at a glance
| Use | Grade | What the research shows |
|---|---|---|
| Preventing memory decline or dementia | D | No benefit in the GEM trial. |
| Tinnitus | D | No meaningful benefit in reviews. |
A: strong, consistent human evidence · B: moderate · C: limited or mixed · D: good evidence of no benefit.
Ginkgo comes from one of the oldest living tree species.
How to take it
We don't recommend ginkgo for memory or tinnitus. See brain health supplements for better-supported options.
Safety and interactions
May increase bleeding, especially with blood thinners or before surgery. Raw seeds are poisonous.
Always tell your doctor and pharmacist about the supplements you take. Check combinations with our interaction checker.
Sources
This page is for education and is not a substitute for advice from your doctor. Read our medical disclaimer.