Cat's claw bark extract comes from the inner bark of the Uncaria tomentosa vine, native to the Amazon rainforest. Unlike whole-herb or root preparations, the bark extract is concentrated for its alkaloid and antioxidant compounds. It is often used to support immune modulation and inflammatory balance.
People commonly use this extract to support immune function, promote joint comfort, and aid digestive health. The extract modulates inflammatory pathways and encourages the body's natural defense responses. Many take it during seasonal changes for immune resilience or as part of a joint health routine.
Capsules and tinctures are common. Take it with meals to lessen stomach irritation. Split the daily amount into two or three doses across the day. Because extracts differ by brand, stick to the serving size on the label.
Do not take cat's claw if you are pregnant or nursing. Avoid it if you have an autoimmune condition like rheumatoid arthritis or lupus, or if you take immunosuppressant drugs. The extract can stimulate the immune system. It may also interact with blood pressure medications and blood thinners. Talk to your doctor before using it, especially if you have a chronic health issue or take any prescription drugs.