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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 64 64
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
Such a great product! My 8-year-old golden retriever has had allergy problems and constantly had ear infections. One vet was content to just keep giving her steroid shots; I never liked that, and they were not only not helping much anymore, but they were hurting her hips. The new vet said he's had about a 90-95% success rate with dogs that have used this food, so we gave it a try. I had tried so many different foods, including limited ingredient ones that got great reviews, so one more couldn't hurt. She's been on the z/d food for more than 2 mos. now, and it's made such a big difference. There was a time or two I was tempted to stop it because it didn't seem to be helping, but the vet said it can take 6-8 wks. or more to really see a difference, so we hung in there, and I'm so glad we did. It has totally cleared up her ears, and they were always so bad before. If your dog has allergies, I recommend giving this food a try. It's pricey, but its formula works, and it's worth the cost. The Chewy price and service are awesome. January 16, 2014
Dog is Allergy Free My two year old doberman developed severe allergies and ear infections. Vet said lets start with food, since it is the most common allergy. He also said food allergy tests are not very accurate. It worked!! Horrific hives, ear infections, etc are all gone. Of course we need to wait till summer comes and see if it holds true. Otherwise it is allergy testing for grass, etc which are very accurate, so my vet says. I have even put my 11 year old dobe on it and her tummy issues have cleared up. Plus my dogs love this food. January 10, 2014
This food is very palatable Our dog was recently diagnosed with food allergies and our veterinarian wanted us to place her on Z/D Ultra. She was on a raw diet before the switch over and we were concerned about her taking to this kibble but she loved it! Not only does she love it, she has transitioned without any side effects. I would definitely recommend this product to anyone who has a pet with allergies December 30, 2013
She likes the food and it resolved her allergy & digestive issues My ten year old lab, Babe, has had digestion and allergy issues her whole life. I've tried everything including a home-made diet of oatmeal & whey protein with GNC canine supplement that worked until she refused to eat it. So my vet put her on Hills z/d diet which is very expensive, but she likes it and it has relieved her intestinal and allergy problems. I just made my first purchase of it from Chewy and was pleased with how quickly I received my first shipment, and with the price which was considerably better than what my vet was charging... even before getting $15 (15% off) my first order for signing-up for autoship. December 17, 2013
I was really surprised. I was surprised because I did not know that z/d ultra is a prescription dog food sold only that way. It is a great dog food that has helped my dog over come her allergies. We had been trying every thing to stop the itching, as well as stomach problems. I would recommend this to everyone with a pet with these problems. Thank you HILLS! December 9, 2013
Good for allergies! I have a Westie who is allergic to rice, lamb, eggs etc. This food he really likes, smells decent and really has helped his itching. Not cheap but worth it. Kibble is a little big for a small dog but he has no problem - just takes him longer to eat it which is probably a good thing! December 7, 2013
The one that works. My boy Tucker has severe allergies and this food is the only one that I have found that works for him. Highly recommend trying it. November 19, 2013
Order Food Online Being on prescription diet food means that you always have to go to the vet to pick up food. We buy big bags of food so this can be a hassle. delivered directly to our door and we greatly appreciate it!! We received a quality product and our dog loves it! Thanks!! November 19, 2013
Best price in town Best price and free shipping no need to run around town. October 27, 2013
Great food for highly allergic dogs I have a 13 yo rescue Maltese. He has severe allergies to EVERYTHING. This is the ONLY food he is able to eat. Ever! October 27, 2013
Another great Hills product, without the allegens my canine suffers from Science Diet Z/D Ultra is a wonderful and welcome relief for my Chessie who suffers from food allergies with painful skin problems. She is doing much better since on this diet. October 23, 2013
This product really helped my dog's skin allergy. My poor Maggie Mae had weeping scabs everywhere and was losing her beautiful border collie coat. We tried other hypoallergenic dog foods but this is the one that works. I resisted putting her on it because of negative comments online stating that vets just sell it to make money. Can't be true my vet gave me a RX to buy online and a friend of ours who is a vet in California also gave it the thumbs up. It's pricey and really zaps my budget (have 3 dogs including a rescue) but for my girl's well being I spend the extra $$. I'm pleased at how beautiful Maggie's coat looks and she loves it. Chewy makes it easy to order and their representatives are so helpful. I was happy with my purchase. October 23, 2013
No more ear infections! My standard poodle Nikita was plagued with ear infections for a very long time. Finally our Veterinarian prescribed Hills Prescription Diet Z/D Canine Ultra, and her ears cleared up immediately. She has not had any itching or problems at all with her ears since we changed her diet. It is a blessing! And I have to add the offered the best price and super fast shipping for a great product. Doesn't get much better than this! October 20, 2013
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