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