This triple combo pack adds Paw-Greens which has a cooling effect on the digestive tract which can have an overall balancing effect on the body. ALSO adds the benefit of the heart & kidney organs and glands found in Rena GO -- which are ideal supplements for pets for when the owners want to provide nutritional support for specific endocrine systems, and to complement the diet with the incredible array of nutrients found in organs and glands from healthy, carefully raised animals.