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Hill's Science Diet Science Diet
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By Health Condition

z/d® Feline - Dry

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Hill's® Prescription Diet®
z/d® Feline

Skin/Food Sensitivities

Food sensitivity and intolerance are potentially serious problems that can result in sensitive or irritated skin, coat and ear conditions or even gastrointestinal upset. Cats that have a food sensitivity or intolerance, also called adverse reactions to food, typically experience an abnormal response to the protein in the food. If your cat suffers from adverse reactions to food, it is even more important to feed the right food.

Hill's nutritionists & veterinarians developed Prescription Diet® z/d® clinical nutrition especially formulated to support your cat's skin and food sensitivities. In fact, z/d is clinically proven nutrition to help avoid adverse reactions to food.

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100% Guarantee We're confident your pet will enjoy Hill's® Prescription Diet® foods. We're so confident that we offer a 100% money-back guarantee.*

Prescription Diet Foods are made in our own U.S. facilities with ingredients from North America, Europe, and New Zealand, which exceed industry standards for purity and nutrient content.

* 100% Satisfaction Guarantee - if you are unsatisfied for any reason, return the unused portion to the place of purchase for a full refund or replacement.

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Key Benefits

How It Helps

  • Helps improve digestion & stool quality
  • Helps eliminate food related causes of skin irritation
  • Helps maintain a healthy skin barrier

How It Works

  • Highly hydrolyzed protein
  • Single carbohydrate source: Rice
  • Essential fatty acid enriched
  • Clinically proven antioxidants

Additional Info

Hill's® Prescription Diet® z/d® Feline provides all the nutrition your cat needs. Please consult your veterinarian for further information on how our Prescription Diet® foods can help your cat to continue to enjoy a happy and active life.

Feeding Guide

Daily Feeding Guide:

Adjust feeding amounts as necessary to maintain optimal weight. If you are unsure, ask your veterinarian.
For best results & safety practices:

  • Gradually transition to your pet's new food over a 7 day period.
  • Exclusively feed the recommended Prescription Diet dry food, wet food & treats.
  • Keep fresh water available at all times.
  • Have your veterinarian monitor your pet's condition.
  • To prevent suffocation, keep the packaging out of the reach of pets and children.

Feeding transition

Adult maintenance

Weight of CatAmount per Day
6 lb (2,7 kg) 1/2 cup (55 g)
8 lb (3,6 kg) 5/8 cup (65 g)
10 lb (4,5 kg) 2/3 cup (70 g)
12 lb (5,4 kg) 3/4 cup (80 g)
14 lb (6,4 kg) 7/8 cup (90 g)
16 lb (7,3 kg)1 cup (105 g)
18 lb (8,2 kg)1 cup (105 g)
Use only as directed by your veterinarian.
Animal feeding tests using AAFCO procedures substantiate that Prescription Diet® z/d® Feline provides complete and balanced nutrition for maintenance of adult cats.

Average Nutrient and Caloric Content

Dry 3797 kcal/kg (398 kcal/cup)

Dry Matter1
Carbohydrate (NFE)41.7
Crude Fiber2.6
Vitamin C142 mg/kg
Vitamin E722 IU/kg
Omega-3 Fatty Acids Total0.52
Omega-6 Fatty Acids Total4.85


1The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles of products with differing moisture contents.
An eight fluid oz. measuring cup of z/d® Feline contains 3.7 oz. by weight.


Brewers Rice, Hydrolyzed Chicken Liver, Soybean Oil, Powdered Cellulose, Chicken Liver Flavor, Lactic Acid, Calcium Carbonate, Calcium Sulfate, Glyceryl Monostearate, Potassium Chloride, DL-Methionine, Choline Chloride, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Taurine, Iodized Salt, Dicalcium Phosphate, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene

z/d® Feline - Dry zd 052742790510,052742872803,052742872810,052742790503 7905,8728

Rated 4.5 out of 5 by 54 reviewers.
Rated 5 out of 5 by Great tasting product! One of my cats needs the z/d prescription diet - but the other cats in the house enjoy eating the same food, which makes mealtime a lot easier for me. They get both the z/d dry kibble and z.d wet food in the mornings and dry kibble and treats appropriate for the z/d diet in the evening. They enjoy all 3 products. I sometimes soak the dry kibble in hot water and feed it after it softens - they love both the soaked kibble and the "gravy" it makes. The z/d prescription diet has literally been a lifesaver and the fact that my cats enjoy the taste keeps me from feeling I'm depriving them in any way. March 27, 2014
Rated 5 out of 5 by Great for sensitive stomachs I adopted 2 cats who were very stressed with their previous moves. They started vomiting on their regular food so tried gradually changing food. Nothing seemed to work. Vet suggested prescription diet z/d which is working out quite well for them. I feed them both wet and dry. I recently retired and I am on fixed income. I just wish it wasn't so expensive. November 29, 2013
Rated 5 out of 5 by Food allergies and atopic dermatitis My "free" kitty started showing signs of food allergy-related distress almost a year ago. "Cheeto" has been on z/d about 10 months now. His fur is softer. His skin is less inflamed. His attitude has even improved! I've always fed my pets Science Diet, and I'm so thankful for Prescription Diet now! May 8, 2014
Rated 3 out of 5 by Hills Prescription Diet feline z/d Two of my cats have tried z/d. One was later switched to i/d. The other cat just started eating it, and it's too soon to say if it will help with his ear issues. Both seemed to like the dry okay, but neither would eat the canned version. The canned version has a strange, almost gelatin-like texture. Not sure if Hills can do anything about that for the future? October 29, 2014
Rated 5 out of 5 by the only thing that helped This was prescribed for my kitty with intestinal problems/IBS. She has a chronic loose stool and this is the only food that helps with that problem. I only feed her this. I have 2 other cats and they eat this as. well, because it is impossible to feed them separately. They all like it very much. July 11, 2014
Rated 5 out of 5 by ZD helps my cat My cat Angel was prescribed ZD, as he has food allergies. It has eliminated the bumps and itching he used to get. And he loves it, even asks for it during the day. Thanks for coming up with such a variety of foods that help specific feline problems. June 16, 2014
Rated 5 out of 5 by prescription cat food 7r my cat needs this food, she had a hard time digesting anything else out there. This food is necessary for her survival!! Thanks for providing great cat food!! asa September 27, 2015
Rated 3 out of 5 by Has reduced my cats itchy skin Good product, nice size bags. Some of the competitors bag size are too large. Kibble is small, I would like to see a larger kibble or at least an option to purchase the same product with a larger kibble. Has was too many carbs in it. Would be nice if treats of some type came in the ZD formula. September 11, 2015
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