Cat's claw (Uncaria tomentosa) is a woody vine that grows in the Peruvian Amazon rain forest. Indigenous people have utilized this renowned plant for hundreds of years. Planetary Herbals Cat's Claw uses only the inner bark of the above-ground vine, which preserves the root for future growth.

Cat's Claw (Uncaria tomentosa) grows in the peruvian Amazon where it has been used for centuries by the Native Peruvians. Recent research has discovered that its inner bark contains unique active, alkaloid constituents that help support the body's immune system. Now used worldwide as a nutritional supplement, cat's claw is obtained without needless destruction of the plant, thereby protecting the delicate Amazon ecosystem.