Shore up your body's defenses with the herbal power of Swanson Full Spectrum Cat’s Claw! The bark of this Peruvian vine is rich in alkaloid compounds that deliver nutritional support for a healthy immune system.; Each capsule features 500 mg of pure cat's claw bark.; Powerful herbal antioxidant from the rain forests of Peru, containing alkaloid compounds.; Helps support a healthy immune system, digestive system, and joint comfort.; Full Spectrum formula features plant-based ingredients without unnecessary processing.