Cat’s claw (Uncaria tomentosa) is a woody vine native to the Amazon and Central American rainforests. Cat’s claw bark and root have been used for centuries by South Americans as a remedy for a wide range of ailments, including stomach ulcers and fevers. It has been shown to have immune-modulating, antioxidant, and anti-inflammatory effects and research is looking into its potential use for several health benefits.‡
Warning: If you are pregnant or lactating woman, have any health conditions, or are taking any medication, make sure to consult your healthcare provider prior to use.
‡ These statements have not been evaluated by the Food and Drug Administration.
These products are not intended to diagnose, treat, cure or prevent any disease.
One vegetable capsule daily.
Piscoya J, Rodriguez Z, Bustamante SA, Okuhama NN, Miller MJ, Sandoval M. Efficacy and safety of freeze-dried cat’s claw in osteoarthritis of the knee: mechanisms of action of the species Uncaria guianensis. Inflamm Res. 2001 Sep;50(9):442-8. doi: 10.1007/PL00000268. PMID: 11603848.
Sandoval M, Okuhama NN, Zhang XJ, Condezo LA, Lao J, Angeles’ FM, Musah RA, Bobrowski P, Miller MJ. Anti-inflammatory and antioxidant activities of cat’s claw (Uncaria tomentosa and Uncaria guianensis) are independent of their alkaloid content. Phytomedicine. 2002 May;9(4):325-37. doi: 10.1078/0944-7113-00117. PMID: 12120814.
Sandoval M, Charbonnet RM, Okuhama NN, Roberts J, Krenova Z, Trentacosti AM, Miller MJ. Cat’s claw inhibits TNFalpha production and scavenges free radicals: role in cytoprotection. Free Radic Biol Med. 2000 Jul 1;29(1):71-8. doi: 10.1016/s0891-5849(00)00327-0. PMID: 10962207.
Lamm S, Sheng Y, Pero RW. Persistent response to pneumococcal vaccine in individuals supplemented with a novel water soluble extract of Uncaria tomentosa, C-Med-100. Phytomedicine. 2001 Jul;8(4):267-74. doi: 10.1078/0944-7113-00046. PMID: 11515716.
Sheng Y, Bryngelsson C, Pero RW. Enhanced DNA repair, immune function and reduced toxicity of C-MED-100, a novel aqueous extract from Uncaria tomentosa. J Ethnopharmacol. 2000 Feb;69(2):115-26. doi: 10.1016/s0378-8741(99)00070-7. PMID: 10687868.
Hardin SR. Cat’s claw: an Amazonian vine decreases inflammation in osteoarthritis. Complement Ther Clin Pract. 2007 Feb;13(1):25-8. doi: 10.1016/j.ctcp.2006.10.003. Epub 2006 Dec 13. PMID: 17210508.