1st Choice Hypoallergenic Grain free Formula with duck (Adult) has been designed to meet the needs of adult dogs suffering from food allergies, intolerances, or need to avoid grains. To obtain a formula that is gentle on the stomach, our animal nutrition expert team has carefully chosen easily digested ingredients that rarely cause allergic reactions. Furthermore, this formula contains our Prebiotic Fiber Balance. The ideal soluble and insoluble fiber ratio promotes intestinal health so that dogs feel good and full of energy! Each kibble offers an optimal supply of prebiotic fiber contributing to the intestinal flora’s balance. For better digestive health, a strong immune system, and increased vitality.