Cat's Claw (Uncaria tomentosa) belongs to the family of Rubiaceae and is especially known as ingredient in medication.
Cat's Claw is originated in the whole Amazon area. Preferential it grows on humid shady grounds in the natural rainforest. The tribe has got a diameter up to 25 cm and a length up to 100 meter. If cultivated the plants are mostly small and bushy.
The main effect of root extracts/ stem extracts of Cat's Claw is to act on the immune system.