
Leaf extract
Ginkgo biloba
Ginkgo biloba
The best-studied memory herb. A large trial at 240 mg a day found no less decline; it can raise bleeding risk.
Ginkgo biloba: the research
- Studied at
- 240 mg a day for about 6 years (GEM)
- What studies found
- No less decline or dementia than placebo (JAMA 2009, Snitz et al., GEM cognitive decline trial)
- Watch for
- May raise bleeding risk with blood thinners.
- In Neuro Recall
- Amount not published














