Hill's Hypoallergenic Dog Treats are delicious rewards for your dog formulated to help reduce allergic reactions to food and to support skin function. Hypoallergenic treat. Clinically proven to help reduce skin and digestive signs caused by food allergies. Great taste your dog will love. Suitable for dogs being fed z/d, d/d, derm defense and i/d. Indulge your dog with a crunchy and delicious, healthy and rewarding treat specially formulated for dogs with food sensivities.