Supports Joint Comfort: In one trial, cat’s claw extract promoted joint comfort in volunteers.* Gut Health Support: This extract may provide important antioxidant protection for gut health and has traditionally been used in Peru for 2,000 years.* Immune Support: The alkaloids in Cat's claw have been associated with enhancing phagocytosis and macrophage activity for healthy immune function.* Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity. Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives. Cat's Claw, also known as Uncaria tomentosa, has been used traditionally in Peru for over 2,000 years. Alkaloids, phenols, sterols, and glycosides comprise some of the naturally-occurring constituents of this herb. The effects of these compounds are far-reaching and include support for joint function, gastric and intestinal health, cellular protection and immune activity. In one trial, cat's claw extract promoted joint comfort in volunteers. This extract may also provide important antioxidant protection for gut health. Its alkaloids are thought to support healthy immune function. This product may be contraindicated for individuals who are taking blood thinning or antihypertensive medications due to a potential synergistic effect.