The functioning of the thyroid gland and liver is often chronically impaired, especially in older cats. A special liver diet in cats is composed of antioxidants, highly digestible carbohydrates and proteins as well as a lower copper content to relieve the liver metabolism. The cat’s thyroid is supported and relieved by controlled additions of phosphorus and less sodium as well as important omega-3 fatty acids, at the same time as the heart, kidneys and urinary tract.