Dr. Harvey has formulated each of his whole food and herbal supplements to enhance the health of your precious cat. Each herbal supplement formula uses a specific mixture of organic, wild crafted herbs for natural vitamins and minerals for health, balance and wellness of your cat. These powdered formulas are based on Dr. Harvey's extensive knowledge of how each herb stimulates the body and how they work synergistically to optimize the effect that each herb has on the other. Herbs also contain many vitamins and minerals that promote health and healing.