Uncaria tomentosa is a woody vine found in the tropical jungles of South and Central America. It is known as cat's claw or uña de gato in Spanish because of its claw-shaped thorns.[1][2] The plant root bark is used in herbalism for a variety of ailments, and is sold as a dietary supplement.[2][3][4]
Evidence of anti-inflammatory action is limited to cell culture studies.[5][6] and has not been demonstrated in randomized control human trials.[citation needed] Cat's claw is being studied for a number of other possible uses, including HIV, Crohn disease, multiple sclerosis, systemic lupus erythematosus (SLE or lupus), endometriosis, kidney problems, bladder cancer, and Alzheimer disease. More research is needed before scientists can say whether it is effective.[7][8]