Herbs & botanicals
Ginkgo Biloba
Names you may see: gingko ginkgo maidenhair tree ginkgo leaf extract
The quick take
Ginkgo biloba is a tree whose leaf extracts are used in cognitive and circulation-focused supplements.
A closer look
What forms will I see on a label?
Most research uses particular leaf extracts. Check the extract amount and standardization; a leaf-equivalent amount is not the same as the extract weight. Seeds are not interchangeable with leaf extract.
Why people use it
People choose ginkgo for memory, concentration and mental clarity. Supplement companies also market it for circulation and healthy aging.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Large trials have not shown that ginkgo prevents dementia. Evidence for better cognitive performance in healthy people remains uncertain, and findings for dementia symptoms are inconsistent.
What should I know before using it?
Ginkgo can interact with medicines and may increase bleeding risk with anticoagulants. It may be unsafe during pregnancy. Headache, dizziness and digestive symptoms can occur; ginkgo seeds can be toxic.
Sources & further reading
Content reviewed: October 1, 2026
General educational information. Follow the product label and seek individual advice when needed.