Alkaloids are the active organic compounds found in herbs and plants. It is from alkaloids that plants derive their potent power. Six oxindole alkaloids are prevalent in Una de Gato bark. These alkaloids are what seem to give Una de Gato its unique healing benefits and the ability to enhance the immune system and gastro-intestinal tract. Studies have shown these alkaloids to be anit-viral, anti-inflammatory, immuno-stimulating, and act as antioxidants-Generation II