Health Notes

Cat′s Claw

Also indexed as:Uncaria tomentosa
Cat′s Claw 
: Main Image © Steven Foster
Botanical names:
Uncaria tomentosa

Botany

Cat’s claw grows in the rain forests of the Andes Mountains in South America, particularly in Peru. The two species of the plant used most commonly are U. tomentosa, which makes up most of the cat’s claw imported to the U.S., and U. guianensis, which is more widely used in Europe. In South America, both species are used interchangeably. The root bark is used as medicine.

  • Reliable and relatively consistent scientific data showing a substantial health benefit.
  • Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
  • For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.

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This supplement has been used in connection with the following health conditions:

Clinically relevant conditions Dosage Indications
Osteoarthritis
100 mg of a freeze-dried preparation daily 3 stars [3 stars]
Cat’s claw has been used traditionally for osteoarthritis. In one trial, cat's claw was significantly more effective than a placebo at relieving pain and improving overall condition.
Rheumatoid Arthritis
Refer to label instructions 2 stars [2 stars]
Cat’s claw has been used traditionally to treat rheumatoid arthritis.
HIV and AIDS Support
Refer to label instructions 1 star [1 star]
Cat’s claw is an immuno-modulating herb. Standardised extracts of it have been shown to help prevent CD4 cell counts from dropping and to prevent opportunistic infections.
Immune Function
Refer to label instructions 1 star [1 star]
Substances found in cat’s claw, called oxyindole alkaloids, have been shown to stimulate the immune system.

Historical or Traditional Use

Cat’s claw has been reportedly used by indigenous peoples in the Andes to treat inflammation, rheumatism, gastric ulcers, tumours, dysentery, and as birth control.1 Cat’s claw is popular in South American folk medicine for treating intestinal complaints, gastric ulcers, arthritis, and to promote wound healing.

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The information presented by TraceGains is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2024.