Cats Claw by Now Foods is a dietary supplement in the form of capsules containing fluffy cats claw (Uncaria tomentosa). This vine is commonly called vilcacora or cats claw (from Spanish: Una de Gato) and belongs to the madder family. Vilcacora is native to northern and western South America, Central America, and the Caribbean. Cats claw is a plant that can be used as a natural support for the proper functioning of the immune system. One capsule of the preparation provides 500 mg of active ingredient in powder form. Cats claw is suitable for adults as a supplement to the daily diet, including vegan and vegetarian diets.