z/d Skin & Food Sensitivities Hydrolyzed Chicken Flavor Dry Cat Food
A veterinary therapeutic dry diet for adult cats, this formula uses hydrolyzed chicken liver as the protein source to help reduce reactions in cats with suspected food sensitivities. It provides complete and balanced nutrition with rice-based carbohydrates and added omega fatty acids, antioxidants, and taurine. The recipe is supported by AAFCO feeding trials for adult maintenance.
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This is a therapeutic diet, formulated for a specific medical condition under veterinary direction. KibbleLab does not assign it a general wellness score, because a therapeutic diet's nutrient targets are set clinically, not by maintenance standards. Your veterinarian selects the right therapeutic diet for your pet.
At a Glance
Where these benefits come from
Benefits the manufacturer highlights in its own product marketing. KibbleLab lists them for reference and does not verify these claims.KibbleLab Review
Strengths
- Uses hydrolyzed chicken liver as the main protein, which can help reduce food reaction risk in sensitive cats.
- Backed by AAFCO feeding trials for adult maintenance, which is the strongest form of nutritional validation.
- Provides solid protein and fat levels for adult cats, with added taurine for heart and eye health.
- Includes fish oil, flaxseed, and controlled omega-3 and omega-6 levels to support skin, coat, and overall health.
Considerations
- Because the protein source is chicken based, it may not be ideal if your cat has a confirmed chicken allergy that persists even with hydrolyzed diets.
- Soybean oil and rice protein are included, which may not suit owners specifically seeking soy-free or legume-free options.
- This is formulated for adult maintenance, so it is not appropriate for growing kittens or pregnant or nursing cats.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Brewer's Rice
Brewer’s rice is a milling byproduct of rice processing made up of small broken white rice kernels commonly used in pet foods as a highly digestible carbohydrate source, filler and binder that provides readily available energy for dogs and cats while contributing little protein, fat or fiber. It is generally gentle on the stomach and cost‑effective, but diets using it must supply other ingredients for essential nutrients; pet owners should note its relatively high glycemic load (relevant for weight or diabetic pets), the potential for trace environmental contaminants associated with rice, and not confuse it with brewer’s yeast.
02
Hydrolyzed Chicken Liver
Hydrolyzed chicken liver is enzymatically broken-down chicken liver used in pet foods as a highly palatable, easily digested source of protein, amino acids and liver-derived nutrients (notably vitamin A and B vitamins), and it’s commonly included in hypoallergenic or limited-ingredient diets because hydrolysis reduces the likelihood of an allergic reaction. While it can improve digestibility and flavor and add nutrient density, very sensitive animals may still react to hydrolyzed proteins, and concentrated liver ingredients can contribute excess vitamin A or purines if overused, so follow feeding guidelines and consult your veterinarian for pets with known sensitivities or metabolic concerns.
03
Rice Protein Concentrate
Rice protein concentrate is a plant-based protein source commonly used to boost protein content in pet foods, treats, and specialty diets and is often chosen for its relatively low allergenic potential. It provides digestible protein and some essential amino acids for dogs but can be limiting in certain amino acids (and taurine for cats), so formulations should balance it with other proteins or supplements to meet complete nutritional needs, especially for obligate carnivores.
04
Soybean Oil
Soybean oil is used in pet foods as a concentrated fat source and palatability enhancer, providing energy and omega‑6 fatty acids (primarily linoleic acid) that support skin and coat condition. Because it is calorie‑dense and higher in omega‑6 than omega‑3, formulators balance it with omega‑3 sources to avoid an inflammatory imbalance; highly refined soybean oil is unlikely to trigger soy protein allergies but can oxidize and should be stabilized and stored properly, and it does not supply the arachidonic acid cats require from animal fats.
05
Chicken Liver Flavor
Chicken liver flavor is used primarily as a palatability enhancer in dog and cat foods, made from concentrated chicken liver extracts or flavoring compounds to improve aroma and taste rather than to serve as a significant protein source. Although liver-derived flavors can contribute trace amounts of B vitamins, iron and vitamin A, inclusion levels are typically small, so they shouldn’t be relied on for nutrition; pets with liver-related dietary restrictions, sensitivities, or a history of pancreatitis may warrant caution and owners should consult their veterinarian if concerned.
Nutritional Breakdown
How to read As Fed versus Dry Matter
As fed shows the numbers straight off the label, water included. Dry matter removes the water so you can compare a wet food and a dry food fairly.What is calorie density
How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.Not sure how much of this to feed?
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Product Details & Brand
Product Specs
AAFCO Nutritional Adequacy
What is AAFCO
Association of American Feed Control Officials. It sets the nutritional
adequacy standards US pet foods are measured against.
What is AAFCO
Association of American Feed Control Officials. It sets the nutritional adequacy standards US pet foods are measured against.Brand
Hill's Prescription Diet offers clinically formulated therapeutic nutrition designed to help manage specific health conditions in pets such as kidney disease, urinary issues, skin sensitivities, digestive problems, and weight management. Sold primarily through veterinarians, it's backed by research from Hill's Pet Nutrition Center and veterinary nutritionists.
WSAVA publishes criteria for evaluating a manufacturer (qualified nutritionists, feeding trials, published research); it does not certify or endorse brands.
Manufacturer
Hill's Pet Nutrition maintains strict quality and safety standards in all of its manufacturing sites, with adherence to rigorous ingredient testing and safety validation procedures. Facilities follow current Good Manufacturing Practices (cGMPs) and are regularly audited for quality, safety, and consistency. All products meet or exceed AAFCO and FDA regulatory standards for pet food.
PSC is a nonprofit that Accredits pet companies on their environmental and social impact, through third-party verification. Hill's Pet Nutrition is a PSC Accredited business. View profile
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
No recall is listed for Hill's Prescription Diet z/d Skin & Food Sensitivities Hydrolyzed Chicken Flavor Dry Cat Food.
Source: FDA animal food recall listings back to January 2019 · Checked daily, last on Aug 31, 2026
Hill's Prescription Diet has 1 recall on record. View brand recalls
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Frequently Asked Questions
Has Hill's Prescription Diet ever been recalled?
Hill's Prescription Diet has 1 recall on record. The most recent was FDA Recall: Hill’s Pet Nutrition on May 21, 2019.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall listings. Last verified dates reflect our most recent data check. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
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