Food sensitivity generally appears as gastrointestinal upset or intense itching or scratching. The Pro Plan Veterinary Diets HA Hydrolyzed Feline Formula contains  hydrolysed proteins which are less likely to induce an allergic response, and the low-allergen carbohydrates help minimise the risk of an allergic reaction. HA is formulated to be highly digestible and provide optimal nutrition.

Ingredients: Rice starch, hydrolyzed soy protein isolate, partially hydrogenated canola oil preserved with TBHQ, hydrolyzed chicken liver, tricalcium phosphate, powdered cellulose, hydrolyzed chicken, corn oil, sodium bisulfate, potassium chloride, choline chloride, L-Lysine monohydrochloride, phosphoric acid, DL-Methionine, salt, guar gum, taurine, magnesium oxide, zinc sulfate, Vitamin E supplement, ferrous sulfate, niacin (Vitamin B-3), manganese sulfate, Vitamin A supplement, calcium pantothenate (Vitamin B-5), thiamine mononitrate (Vitamin B-1), copper sulfate, riboflavin supplement (Vitamin B-2), Vitamin B-12 supplement, pyridoxine hydrochloride (Vitamin B-6), folic acid (Vitamin B-9), Vitamin D-3 supplement, calcium iodate, biotin (Vitamin B-7), menadione sodium bisulfite complex (Vitamin K), sodium selenite.   B-2564