Human Effect Matrix
The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect memory
Grade | Level of Evidence |
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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 more evidence, the more we can trust the results.
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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.
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Consistency of research results ?
Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
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Notes |
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Ginkgo biloba |
All comparative evidence is now gathered in our A-to-Z Supplement Reference. The evidence for each separate supplement is still freely available here. |
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Bacopa monnieri | ||||
Melissa officinalis | ||||
Caffeine | ||||
PRL-8-53 | ||||
Blueberry | ||||
CDP-choline | ||||
Fish Oil | ||||
Ginger | ||||
Melatonin | ||||
Modafinil | ||||
Nicotine | ||||
Nigella sativa | ||||
Oxiracetam | ||||
Phosphatidylserine | ||||
Piracetam | ||||
Red Clover Extract | ||||
S-Adenosyl Methionine | ||||
Vinpocetine | ||||
Black Cohosh | ||||
Choline | ||||
Chromium | ||||
Cocoa Extract | ||||
Creatine | ||||
Marijuana | ||||
Polygala tenuifolia | ||||
Sceletium tortuosum | ||||
Vitamin E | ||||
Pramiracetam | ||||
Peppermint |