Natures Answer Cats Claw Bark 60ml is a woody vine that grows wild in the Amazon rainforest and other tropical areas of Central and South America. The name Cat's Claw comes from the shape of its thorns that look like a cat's claw. Cat's claw inner bark extracts, liquids, tablets, capsules, and tea are made from the bark and root of the vine. The use of a cat's claw for health dates back to the Inca civilization. Nature's Answer Cat's Claw Inner Bark brings you the benefits of this unique vine. This potent 1350 mg formula supports healthy joint and muscle function naturally. A recent study showed that Cat's Claw significantly elevated the infection-fighting white blood cell count in adult men who supplemented with this herb for 6 months. Researchers also noted a repair in DNA - both single and double-strand breaks. Its effect on the immune system appears to be two-fold, with the ability to both boost and dampen the immune response, depending on what is needed. Hyperimmune responses can be contained, whilst a weak immune system that allows the disease to advance undeterred is strengthened by supplementation with Cat's Claw.