Initial Posting: 4/21/2017    Last Update: 7/25/2017
Answer: As discussed in the "What It Does" section of the Ginkgo Supplements Review, it is true that most evidence indicates no significant benefit for Ginkgo biloba in preventing or treating Alzheimer's disease or other dementias. In healthy individuals, it may modestly improve limited aspects of memory and cognition — although this evidence comes from small, company-funded studies.
There is some evidence that ginkgo may reduce the frequency of attacks of Raynaud's disease and may decrease symptoms of vertigo and vestibular disturbances. The dose and type of ginkgo used in each of these conditions is noted in the "What to Consider When Using" section of the Review — which includes ConsumerLab's tests and comparisons of marketed Gingko biloba supplements.