Cats Claw Powdered Inner Bark has been used in Peru and other South American countries by several native tribes over the centuries. Some traditional uses include as an anti-bacterial and anti-fungal, immune system support, and to prevent pregnancy. Other benefits may include reducing or eliminating the spread of growths and calming digestive system issues. This is the highest quality Cats Claw Inner Bark Extract available on the market in raw, powder form. It is a yellowish-orange powder.