Skip to main content

Cat’s Claw

Compilation by Armando Gonzalez Stuart, PhD

Scientific Name:

Uncaria spp.

Common Names in Spanish:

Uña de gato, Bejuco de agua, Garabato.
Note: *Cat’s claw is the common name that in the commercial herbal market usually refers to 2 closely related plants, U. tomentosa (Willd.) DC and U. guianensis (Aubl.) Gmel.

  • Although these 2 species are very similar in appearance and medicinal application, they do not have exactly the same active ingredients.

Parts of the plant used:

The bark and root from plants that are at least 6 years old.

  • Younger plants reportedly possess much less medicinal value, if any at all.

How is it used?

  • The plants available in the Western market are usually sold as extracts or capsules.
  • In some cases, cat’s claw may be combined with other herbs that purportedly stimulate the immune system.

What is it used for?

  • Cat’s claw ( tomentosa) is employed as a contraceptive by some indigenous tribes in South America, as well as for the treatment of osteoarthritis.
  • Because of its anti inflammatory action, it may have value in the treatment of gastritis and rheumatoid arthritis, but conclusive data is not available at this time.
  • Various preparations based on this plant have been touted as possible options for cancer prevention and treatment, but few clinical trials have been done in humans.
  • Both species of cat’s claw have anti microbial properties, especially against some types of viruses, including HIV.
  • Other potential uses include: as an anti-inflammatory, antioxidant, immune stimulant and as a treatment to reduce the negative side effects of chemotherapy.

 

Safety / Precautions

Safety/Precautions:

  • Avoid these herbs during pregnancy and lactation.
  • Avoid use in children.
  • Cat’s claw preparations may cause tissue rejection in patients undergoing organ or tissue (including bone marrow) transplants.
  • The plants’ active ingredients may interact with certain hormones, vaccines, and medications to suppress the immune system.
  • Use only under medical supervision in patients with auto-immune disorders, such as lupus and rheumatoid arthritis, for example.

Before you decide to take any medicinal herb or herbal supplement, be sure to consult with your health care professional first. Avoid self-diagnosis and self-medication: Always be on the safe side!