Natural Balance® L.I.D. Limited Ingredient Diets® Sweet Potato & Chicken Formula is a Grain-Free Formula for dogs with allergies based on our unique protein and carbohydrate blend. Some dogs may be highly sensitive to commonly used proteins, carbohydrates and food additives in their diet. Allergic reactions can lead to irritable bowel, upset stomach, and a number of skin problems. Natural Balance® has created Sweet Potato and Chicken formula for dogs with these food allergies. Our Sweet Potato and Chicken formula combines fresh chicken and sweet potatoes, along with effective natural ingredients to help rebuild the dog's immune system.