Una de Gato/Cat"s Claw herb grows in the rain forests of Peru where the inner bark containing the beneficial factors is gathered without destroying the plant, maintaining the fragile ecological balance of the rain forest. Native Ashaninka Indians have relied on its benefits for centuries for a wide variety of health concerns. Current research indicates it may play a valuable role in supporting the body"s Immune System, and is combined for synergistic action in this formula with the immune-enhancing echinacea and astragalus. Una de Gato is a remarkable tonic herb and is now considered equal, if not superior, to the world"s foremost immune-fortifying herbs: echinacea, golden seal, pau d"arco, garlic and eleuthero. It has also been compared favorably with shark cartilage and caprylic acid. It is particularly beneficial to the immune, digestive and structural systems. The inner bark of this vine provides beneficial alkaloids. Each capsule contains 300 mg of una de gato combined with astragalus and echinacea. Take 1 capsule daily with a meal.