Veterinary Strength Kidney Health supports kidney health and function in cats and dogs, especially in times of stress. This holistic formula helps maintain normal kidney function by supporting renal circulation, immune and antioxidant defense system functions, homocysteine balance, normal fluid retention, stress management, liver functions, and normal detoxification. Astragalus root powder supports kidney circulation and immune function, while the Chinese herb Rehmannia supports kidney and liver function and is known as the "kidney’s own food." Other ingredients like vitamins B1 and B2 support metabolic activity, including the metabolism of proteins, fats, and carbohydrates, supporting proper energy production. Pets love these tasty chicken liver-flavored chews!