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Hill's Prescription Diet z/d Canine Ultra Dry Dog Food

List Price: $107.89
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25-lb bag
  • 8-lb bag
  • 17.6-lb bag
  • 25-lb bag

Hill's Prescription Diet z/d Canine Ultra Dry Dog Food, 25-lb bag

Food sensitivites 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.

Prescription Diet z/d Canine Ultra is formulated with the following benefits:

  • Formulated with Hill's Hydrolyzed Protein System, highly digestible proteins that minimize the chances of adverse reactions to food
  • No intact animal protein to help avoid adverse reactions to food
  • Highly digestible carbohydrates and fats to help reduce gastrointestinal workload
  • Increased in omega 3 and 6 Fatty Acids to help nourish the skin
  • Added antioxidants to control cell oxidation and promote a healthy immune system and skin barrier function

NOTE: 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 786-528-6088 or e-mailed to

See all items by Hill's Prescription Diet »

Item Number 69806
Special Diet
  • Prescription Food
  • Hill's Science Diet
  • Science Diet
  • Dry Food
Country of Origin
  • United States
Breed Size
  • All Breeds
  • Adult

Starch, Hydrolyzed Chicken Liver, Soybean Oil, Hydrolyzed Chicken, Powdered Cellulose, Lactic Acid, Dicalcium Phosphate, Calcium Carbonate, Glyceryl Monostearate, Potassium Chloride, Iodized Salt, Choline Chloride, 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, Vitamin D3 Supplement , Folic Acid), DL-Methionine, minerals (Ferrous Sulfate, Zinc Oxide, Copper sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Taurine, Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene

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Hill's Prescription Diet z/d Canine Ultra Dry Dog Food Customer Reviews

Hill's Prescription Diet z/d Canine Ultra Dry Dog Food 4.7 5 81 81
only food dog can eat This dog food is the only food my dog can eat and keep down. We had to keep her on steroids two weeks then after a week she would quit eating and drinking. Once she started eating this food we have had no problems with her eating or drinking. October 22, 2014
Excellent product for dogs with allergies This product has definitely helped my dog. I still add other food like peas and a few string beans but ZD is by far the primary food . Glad I started with they really have helped with questions I had regarding this and other products. a GREAT PLACE TO SHOP. October 17, 2014
Allergic reaction resolution! My poor Sadie has been riddled with skin afflictions for about six months now. She is constantly itching but since we started Hills she seems to be itching less and her sores are healing. The vet told me it would take about 9 weeks to see the full effect if indeed she has allergies. We are about 4 weeks in now. I will be sure to let you know. October 14, 2014
Helps with GI and Allergy Issues My dog's quality of life has improved significantly since we switched to z/d, but she's much more interested in the canned version than she is the dry. October 10, 2014
very happy all around great service save $$ and direct to door what could be easier. October 8, 2014
Great product at reasonable price Food was much cheaper than I had been paying at my local vet. Delivery was prompt. Will definitely be ordering again. October 2, 2014
My male English Bulldog's itching has greatly improved since I have been using ZD. And whatever it has in it, it distracts fleas. His skin improved. My English Bulldog's sensitive skin has improved so much since I started using Hills ZD for sensitive skin. The itching has stopped and the redness disappeared. He also loves the flavor so much. His digestion is also very good, so whatever it has in it, helps him in so many ways, including him not getting one flea. I appreciate that this can be shipped to me without a shipping charge as well. I have tried other products for sensitive skin, but it doesn't work like the Hills Science Diet ZD for sensitive skin! September 24, 2014
This product has helped improve my dog's belly troubles. My dog has food allergies and an irritable bowl. This product has really helped improve my dog' quality of living. September 22, 2014
This produce is excellent for dogs who have allergies This product is excellent for dogs who have allergies. Both of my dogs have been using this product for 12 years. September 13, 2014
Works for my dogs allergies I was resistant when the vet said it would help with allergies. It works great for my dog. What I'm most excited about is that you deliver. Thanks September 8, 2014
Pure nutrition! My dog was suffering both from skin issues and random vomiting (1-2 times per week). Since switching to z/d, in the past month she has vomited only once, and had just a single skin flare-up. I'm hopeful that this will be even less frequent over the long-term. Also, it's the only dog food I've ever used that actually smells good! September 6, 2014
This product has helped our Yorkie Our Yorkie is picky about her food, but she really likes this product. It has helped her allergy problem. I recommended it to my sister for her itchy dogs. Thanks September 1, 2014
This works, and Jasper loves it. My vet recommended Hill's Prescription ZD for my dog's skin allergy. Jasper loves the taste and I can see the difference in his skin after just 1 week. No more red, raw patches. Jasper is a calm dog again. September 1, 2014
Product great. Chewy staff, even greater! Customer service was wonderful. Will definitely use this company again! Very impressed!!! Thank you! August 30, 2014
Works well enough My recent rescue and I have been struggling for a while to find a brand of dog food that didn't upset his stomach. Recommended by our Vet, Z/d has definitely helped in changing his stool from being liquid to being a soft level of 'firm'. With a sprinkling of Metamucil at each meal (2 1/8 teaspoons in the morning, 3 in the afternoon) we've finally achieved a level of firmness that I'm happy with (with the added bonus that cleaning up after my dog is now a lot easier). My reason for not giving 5 stars is mainly the price. I bought my first 8lbs bag from my Vet for $50, so am absolutely happy that I can find it almost $20 cheaper on Chewy. However when you compare it to other dog food brands it's still rather pricey. That said until I find another brand that works better, I'll keep coming back to Z/d. August 12, 2014
Chewy's is great! I love buying food and supplies from I always get the items mailed to my door so I don't have to handle the heavy items like I do at the store. Getting litter in and out of the shopping cart is a major pain! I like that I can also get the prescription diet foods for less money than at the vet's office. We actually ordered a pet carrier that turned out to be too small for our kitty and they shipped us another without charge and told us to give the other one to charity or a friend. That happens so rare now that I have been buying supplies from Chewy everysince then. August 4, 2014
Great product and great for my dog. Our dog has allergies, therefore, our vet told us to use Hill's for him. He does well with it....thanks, Hill's July 24, 2014
Great treats for you pet with allergies! My dog, Max, was switched to these treats by his vet due to skin allergies. He never missed a beat..he loves them! They are a perfect size and very reasonable and convenient at Chewy'! I recommend them to you for your dog with allergies! July 23, 2014
My dog loves this food. Abigail loves the food and can't wait until dinner time each day. I am hoping that this z/d diet will also stop her food allergy so that she can enjoy life more. I will be buying more. July 15, 2014
does the job This is food for treatment/ management of illness so it is what it is. My girl seems to like it enough and it is controlling her digestive issues but it is very expensive. As a toy breed she has had a bit of difficulty with the size of the kibble so it would be nice to see it made in smaller bites for smaller dogs. July 8, 2014
This product doesn't upset my Shih-Tzu's tummy. I've tried many different foods, both canned and hard food, and this one seems to agree with my dog more than any others I have tried. Prior to ordering from, I've been purchasing the food from Saluda River and was paying as much as $1.00 a can more at Saluda. July 7, 2014
Excellent Quality My dog is on Hills ZD food and the quality of the food is great. I had some issues with the consistency of the ZD can food in the past being very dry and pasty but the consistency of the ZD can food Chewy provides is great. It is much more moist and hence more palatable and appealing to my little dog. The ZD kibble is of the quality I am used to. I also recommend the ginger and pumpkin treats they are just great for digestive issues. I give a rating of 10 for quality of food, service and price. July 1, 2014
Food was prescribed by vet to help allergies We are currently trying to "cleanse" our dog from meat proteins as suggested by our vet to help with her allergies. We are only about a month into it and it seems like her itching has subsided some, but is not totally gone yet. We were told to keep up with this for 3 months, so we will see if it works! June 11, 2014
Great product! My dog loves the flavor & after only a week she has no signs of food allergies! June 11, 2014
This product has helped Our yorkie has a food allergy... this food is very helpful to her. The kibble is very large for her. I would love to see it in a smaller kibble... :) May 20, 2014
How can anyone not recommend this product? I cannot begin to tell you how brutal it's been while I watched my little yorkie suffer through her food allergies over the past 3 years! I've had saliva testing, thyroid testing, blood allergy testing, skin testing, homeopathic meds, antibiotics, allergy shots, etc.. Nothing worked.. (Thank god for pet insurance!!!!) I originally didn't give this product a chance b/c the kibble size is tooo large, but I soak it in diluted apple cider vinegar and olive oil with warm water so it's easy to break down. Yum!! .. no.. more like yuck! lol!, but she eats it! I stayed the course with this one, and after 6 weeks, the dry spots finally went away and she may itch a tiny bit, but little and normal tolerable stuff. No more hair loss with bloody faces from rubbing her head into the carpet!!! yuck! The funny thing is that I was able to get my hands on the new APOQEL drug for dogs that stops the itch.. It's supposedly safer than pred and the other med and specifically targets the itch ONLY. Well, it's not available in this country yet b/c it has been held up at the manufacturer.. I ended up ordering from the UK and have it on hand "JUST IN CASE".. lol! I'm assuming I won't be needing it any time soon... I only wish the kibble of this food was smaller so I didn't have to make it mushy for her, but hey; I'll do what I have to do!! Anything is better than watching your little doggie suffer in an ungodly fashion! Now I just need to know if she can stay on it for the rest of her life?? Does it provide her with enough nutrients that she needs as she gets older? A+++! May 15, 2014
Allergy Relief My dog has food intolerances and environmental allergies. Since feeding him ZD dry and Canned, he has no digestive issues and 90% of his itching has subsided. May 15, 2014
Does the trick for my dogs. I have two boston terriers who have food allergies. My vet put them on this food several years ago, and they haven't had any problems since. April 26, 2014
Hill's Prescription Diet z/d Canine Ultra Allergen-Free Dry Dog Food We have two Wheatons and they tend to have several allergies, some food and some yeast. We have tried so many things to control our poor pups discomforts and the Hill's Prescription Diet z/d Canine Ultra Allergen-Free Dry Dog Food was the ticket! We are so thankful and pleased! February 21, 2014
Provided relief from skin irritation and scratching. The Hills dog food was effective in neutralizing the incidence of scratching, open sores my 7-year old lab/coon hound mix has experienced over the last year. I mix two tablespoons of brown rice (for fiber) with a cup and 1/4 of the dog food. She loves the food and no more health issues. February 14, 2014
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