Herb & BotanicalNo.038

Ginkgo Biloba

Memory & circulation (marketed).

Typical / RDA120–240 mg

Upper limitGenerally safe

EvidenceLimited

How to take it

Timing With a mealFood OptionalForm Leaf extract

What to know

Widely sold for memory, but large trials found no meaningful benefit for preventing cognitive decline. Acts as a blood thinner, which is the bigger practical concern.

Interactions & cautions

Thins blood — real bleeding risk with warfarin/aspirin and surgery.

Do you actually need it?

Little proven cognitive benefit; mind the bleeding risk.

Questions people ask about ginkgo biloba

What happens if you take too much ginkgo biloba?Ginkgo biloba is generally safe at typical doses, but exceeding them or combining with blood thinners significantly raises bleeding risk. Learn the signs and precautions.
Lion’s Mane and Ginkgo for Brain Fog: Do They Really Work?Supplements like Lion's Mane and Ginkgo Biloba are often marketed for brain fog, but current evidence is limited. Focus on underlying causes first.

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Reference values: NIH Office of Dietary Supplements, adult general population. Educational information only — not medical advice. Confirm with a healthcare professional.