HA Hydrolyzed Dry Dog Food by Purina is a highly digestible, hydrolyzed protein diet for dogs with food sensitivities. Uses just a single carbohydrate source, along with hydrolyzed protein sources to reduce the cause of a negative response of certain food allergens. Complete and balanced formula for adult dogs.,HA Hydrolyzed Dry Dog Food by Purina is a highly digestible, hydrolyzed protein diet for dogs with