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Verbal Fluency

Kamal
Research analysis lead by Kamal Patel
All content reviewed by Examine.com Team. Published:
Last Updated:

Summary of Verbal Fluency

Primary Information, Benefits, Effects, and Important Facts

Scientific Information on Verbal Fluency


Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect verbal fluency
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The mo re evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-c Oxiracetam Minor Very High See 2 studies
Appears to favor improvements in verbal fluency in persons with cognitive dementia, despite benefiting most parameters measured
grade-c D-Serine - - See study
In a category fluency test, 2.1g D-serine taken two hours earlier appears to improve fluency. The increase was larger than seen with placebo, but comparing the two groups did not yield a significant benefit with D-serine over placebo statistically
grade-c Ginkgo biloba - Very High See 2 studies
No significant influence of supplemental ginkgo on verbal fluency even in persons with cognitive injuries.
grade-c Polygala tenuifolia - - See study
No significant improvements in verbal fluency noted in elderly adults with memory complaints supplementing this herb.
grade-c Vitamin E  

All comparative evidence is now gathered in our ​A-to-Z Supplement Reference.

The evidence for each separate supplement is still freely available ​here.