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Uncaria tomentosa

Uncaria Tomentosa (Cat's Claw) is an Amazonian vine that has been traditionally recommended for antiinflammatory and fatigue syndromes.

Our evidence-based analysis on uncaria tomentosa features 46 unique references to scientific papers.

Research analysis led by .
Reviewed by
Examine.com Team
Last Updated:

How to Take

Medical Disclaimer

Recommended dosage, active amounts, other details

Studies using Cat's Claw tend to use 250-350mg of the ethanolic extract once a day. This is usually standardized to a Pentacyclic Oxindole Alkaloid content.

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Human Effect Matrix

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The Human Effect Matrix summarizes human studies to tell you what effects Uncaria tomentosa has on your body, how much evidence there is, and how strong these effects are.

Full details are available to Examine Plus members.
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 more 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-d Minor - See study
An increase in white blood cell count has been noted with Cat's Claw by 9% over 9 weeks with a water extract, which is thought to be related to the immunoenhancing properties. The white blood cells that were increased were not assessed
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Things to Note

Is a Form Of

Primary Function:

Also Known As

Cat's Claw, Vincaria

Do Not Confuse With

Devil's Claw (Harpagophytum procumbens), the other Cat's Claw (Uncaria rhynchophylla)

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Click here to see all 46 references.