Hill's Prescription Diet z/d Original Skin/Food Sensitivities Dry Dog Food

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25-lb bag
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Food sensitivities and intolerance are potentially serious problems that can result in sensitive or irritated skin, coat and ear conditions or even gastrointestinal upset. Dogs that have a food sensitivities or intolerance, also called adverse reactions to food, typically experience an abnormal response to the protein in the food. If your dog suffers from adverse reaction to food, it is even more important to feed the right food. Hill's nutritionists and veterinarians developed Prescription Diet z/d clinical nutrition especially formulated to support your dog's skin and food sensitivities. In fact, z/d is clinically proven nutrition to help avoid adverse reactions to food.

Key Benefits

  • Helps improve digestion & stool quality
  • Helps eliminate food related causes of skin irritation
  • Visible improvement in skin & coat
  • Helps maintain a healthy skin barrier
  • Highly hydrolyzed protein
  • Single carbohydrate source: Corn Starch
  • Essential fatty acid enriched
  • Clinically proven antioxidants

Special Note

Hill's is going through a packaging and formulation change. Customers may receive the old packaging and formulation during this transition.

Hill's Prescription Diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to rx@chewy.com.

See all items by Hill's Prescription Diet

  • Item Number
  • Weight
    25.0 pounds
  • Brand
  • Breed Size
    Small, Medium, Large, All Breeds
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Prescription Food

Nutritional Info


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

Caloric Content

  1. 354 kcal/cup
Guaranteed Analysis
Crude Protein 14.0% min
Crude Fat 10.0% min
Crude Fiber 5.0% max
Omega 3 Fatty Acids 0.3% min
Omega 6 Fatty Acids 3.0% min

Feeding Instructions

Adjust feeding amounts as necessary to maintain optimal weight. If you are unsure, ask your veterinarian. For best results & safety practices: Use only as directed by your veterinarian. Gradually transition to your pets new food over a 7 day period. Exclusively feed the recommended Prescription Diet dry food, canned food & treats. Keep fresh water available at all times. Have your veterinarian monitor your pets condition.

Transition Instructions

A gradual transition to a new pet food is important to avoid digestive upset. To transition, mix your pet’s current food with the new food. Over 7 days, gradually decrease the amount of the current pet food while increasing the amount of new pet food. In some cases, your veterinarian may recommend no transition or a shorter transition time.

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Customer Reviews

Rated 4.6 out of 5 by 246 reviewers.
Rated 5 out of 5 by Helped my Border Collie's IBS My 10 year old Border Collie was in and out of the hospital and ER with severe GI upset. We thought we were going to lose her a couple times. After a bowel biopsy revealed Irritable Bowel Syndrome, my vet recommend the Hills Z/D. I'm all about natural ingredients, so I was skeptical about this, but would do anything for my dogs and was willing to try it. After a week, her symptoms got better and then resolved. Now this is the only food she can eat. NO more diarrhea, vomiting, teeth grinding, or drooling. For her it is a miracle food. We've discovered after trial and error that she can't have fish products (or anything marine related), so this is the only food of its kind on market she is able to stomach. Literally. Glad they have a treat as that is the only treat she can have as well. Glad to have my barn friend back. :-) September 28, 2016
Rated 1 out of 5 by Stay away What to begin... I have a older English bulldogge that was prescribed this diet which I didn't agree with from the start. The ingredients are just horrible. Well he actually did good on the Hills Science Diet Ultra z/d until we bought the bag that said "New & Improved" because they decided to make numerous changes. So my dog ended up at the vet after continuous scratching and a very large hot spot with mild ear infection and also some hair loss on his face. Well my roommate decided to try the remainder of the bag for her dog. Low and behold he now has a large hot spot (he is not a bulldog and is a mixed breed). The roommate's dog is 6 years old and has never experienced a hot spot and bouts of itching such as this. I'm sorry Science Diet but I also called and complained and the lady seemed careless as to what I was saying. I hope others read this and decide to make better choices!!! August 30, 2016
Rated 4 out of 5 by Dog actually likes it I have a 11-year-old Shih Tzu that constantly scratches and so vet suggested trying this for 8 weeks. It's been 8 weeks and she's still scratching so I think I'll try something else, but she does seem to like this food. However, it's pretty pricey and if I'm spending the big bucks, I'd like to have her not scratching. October 26, 2016
Rated 5 out of 5 by Finally a Food That Willow Can Enjoy! Trust me, I have tried to feed my little girl most "quality" foods on the market and other prescription foods. She always seemed to have an upset tummy and wouldn't enjoy eating. Dr. gave a sample pack of Z/D and Willow loved it. Ordered an 8 lb bag. Also took allergy tests. It looks like we will be on Z/D for some time. We are also so happy that "Chickie" is not one of the foods that she is allergic to because she loves baked chicken breast in it too. Just a tiny bit! So very happy and it seems that Willow is too. Having an upset tummy for so long I think she is adjusting to not having one. Thank you Hill's prescription Diet for Z/D! October 8, 2016
Rated 5 out of 5 by Terrific product, expensive price This product is terrific, however it is very expensive. It is always appreciated when free shipping is offered. October 22, 2016
Rated 5 out of 5 by Great for dogs with food allergies! great food for dogs with stomach/pancreas sensitivities!! October 24, 2016
Rated 5 out of 5 by My dog loves this food ! My dog has medical problems and this food helps with her issues October 23, 2016
Rated 5 out of 5 by It's A Miracle My cocker spaniel will be 11 soon. She was diagnosed with food allergies and prescribed Hill zd dry and wet when she was 4. She hated the wet and since neither seemed to be making any difference in her skin lesions, I stopped using the canned and began cooking for her myself. She loved that for a while and got bored. Now she is on the new zd dry and Hills +7. I bathe Taffy twice a week to control her skin issues. Two days on the zd dry new formula (which reads exactly the same as the old), her skin cleared up with no new eruptions. I was surprised not to find differences in the formula since the size and texture of the new zd dry are so different. I've got my fingers crossed and I hope Hills will continue to research and upgrade their products for our beloved pets. PAdams, NY September 16, 2016
  • 2016-10-31 T07:01:00.726-05:00
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