Cat's claw is an adjuvant product for the immune system to function properly and to try to improve the body's natural defenses. Cat's claw corresponds to a genus of plants among which Uncaria guianensis and Uncaria tomentosa stand out. The latter is the most commonly used for medicinal purposes, since its properties have interesting effects on health. Basically, it stimulates the production of white blood cells that intervene in the fight against pathogens that cause infections.