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

By Hill's Prescription Diet
Rated 4.5961 out of 5 stars
Veterinary Diet Item
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Hill's Prescription Diet z/d Skin/Food Sensitivities Original Flavor Dry Dog Food, 17.6-lb bag slide 1 of 11
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Hill's Prescription Diet z/d Skin/Food Sensitivities Original Flavor Dry Dog Food, 17.6-lb bag slide 1 of 11

$89.99Chewy Price
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This Item - Hill's Prescription Diet z/d Skin/Food Sensitivities Original Flavor Dry Dog Food, 17.6-lb bag
Rated 4.5961 out of 5 stars
$89.99Chewy Price
Hill's Prescription Diet z/d Skin/Food Sensitivities Original Flavor Wet Dog Food, 13-oz, case of 12
Rated 4.5285 out of 5 stars
$58.99Chewy Price

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About This Item

  • Helps improve your dog’s digestion and stool quality with highly hydrolyzed protein.
  • Helps eliminate food-related causes of skin irritation and results in a visible improvement of the skin and coat.
  • Helps maintain a healthy skin barrier and enriched with essential fatty acid.
  • Clinically proven antioxidants are added for optimal health benefits, plus it’s developed with a single carbohydrate source—cornstarch.
  • Skin/Food Sensitivities recipe has not changed—it offers the same great taste and benefits as it did prior to the introduction of the S+OXSHIELD seal of confidence.
Play Video: Learn More About Hill's Prescription Diet From Our Team of Experts
Learn More About Hill's Prescription Diet From Our Team of Experts

About Hill's Prescription Diet Foods for Skin / Food Sensitivities

Improving Lives Together

Groundbreaking Nutrition for Sensitive Dogs

Dogs with skin and coat conditions or food sensitivities can benefit from Hill's Prescription Diet z/d and d/d foods. Prescription Diet d/d has limited ingredient nutrition and a single intact animal protein. The Prescription Diet z/d food features a highly hydrolyzed protein and a single carbohydrate source to minimize the risk of allergic reactions. Many pet parents discover that simply eating the right food helps eliminate food-related causes of skin irritation and helps avoid reactions to food.

Clinical Nutrition

With Hill's, it's not just high-quality ingredients that count. Their focus is on the proper balance of nutrients in every recipe. So Hill's has developed foods that are designed to help pets with specific health conditions, providing the right nutrients to support their health. Hill's alliance with veterinarians puts them in a unique position find a nutrition recommendation for your pet no matter what health issue your pet is facing.

Formulated by Veterinarians

Hill's Prescription Diet started with a veterinarian's belief that some health issues could be managed through nutrition. What began as a theory has now been proven through extensive research by a team of over 220 vets, PhD nutritionists and food scientists. The results can be seen in Hill's Prescription Diet therapeutic pet foods.

Meeting the Highest Standards

Providing a food that delivers exactly what it says it does is Hill's number one priority, in fact, they perform over five million safety and quality checks every year. They've established relationships with trusted suppliers and will only accept ingredients that meet stringent standards.

The Taste Factor

You might know that Hill's Prescription Diet is good for your pet, but she's only concerned with the taste. Even though they place a heavy emphasis on nutrition, Hill's hasn't forgotten about palatability. Savory ingredients are combined to produce foods with enticing aromas, textures, and shapes that your pet can't resist.

Find the Right Formula

Talk to your veterinarian about the right formula for your pet.

z/d Skin/Food Sensitivities


Key Nutrients

  • Highly hydrolyzed animal protein
  • Single purified carbohydrate source
  • High levels of vitamin E
  • Natural fiber
  • Essential fatty acid enriched
  • Clinically proven antioxidants

Health Benefits

  • Visible skin and coat improvement in 30 days
  • Promotes healthy skin barrier
  • Helps support a healthy immune system
  • Clinically proven to help normalize stool

d/d Skin/Food Sensitivities

Potato & Venison

Potato & Duck

Potato & Salmon

Key Nutrients

  • Limited ingredient nutrition with single intact animal protein
  • No soy protein or gluten
  • High levels of omega-3 and 6
  • Clinically proven antioxidants

Health Benefits

  • Results you can see in the skin and coat
  • Helps maintain a healthy skin barrier
  • Helps improve digestion and stool quality
  • Supports a healthy immune system

Derm Defense


Key Nutrients

  • With proprietary complex of bioactives and phytonutrients
  • High levels of omega-3 and 6 fatty acids
  • Clinically proven antioxidants, including vitamin E
  • No corn, chicken or by-product meal, artificial colors, flavors or preservatives

Health Benefits

  • Helps strengthen skin barrier
  • Drives healthy skin from within
  • Formulated to help soothe and nourish skin and coat
  • Helps skin to recover naturally
  • Holistic long-term solution supporting healthy immune system

About Hill's Prescription Diet

Hill's mission is to help enrich and lengthen the special relationships between people and their pet. Their Prescription Diet product line delivers clinically proven nutrition that supports common pet health concerns, from digestive and urinary health to aging and weight management.
Shop Hill's Prescription Diet

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Top IngredientsCorn Starch, Hydrolyzed Chicken Liver, Powdered Cellulose...Whole Grain Corn, Brewers Rice, Chicken Meal...Whole Grain Wheat, Whole Grain Corn, Chicken Meal...Wheat Flour, Whole Grain Wheat, Chicken Meal...Potatoes, Potato Starch, Salmon...
Breed SizeSmall Breeds, Medium Breeds, Large Breeds...Small Breeds, Medium Breeds, Large Breeds...Small Breeds, Medium Breeds, Large Breeds...Small Breeds, Medium Breeds, Large Breeds...Small Breeds, Medium Breeds, Large Breeds...
Special DietPea-Free, Veterinary Diet, Hydrolyzed ProteinPea-Free, Veterinary Diet, With GrainVeterinary Diet, Weight Control, With GrainPea-Free, Veterinary Diet, With GrainGluten Free, Grain-Free, Pea-Free, Veterinary Diet, Chicken-Free
Food FlavorChicken, PoultryChicken, PoultryChicken, PoultryChicken, PoultrySalmon, Seafood & Fish
Health FeatureSkin & Coat HealthUrinary Tract HealthWeight ManagementHip & Joint SupportSkin & Coat Health

Questions & Answers

36 Customer Questions

How many cups is in a 25lb bag?
Answer by ChewyJun 09, 2018
There are approximately 32 cups of kibble in the 8 pound bag, 70 cups of kibble in the 17.6 pound bag, and 100 cups in the 25 pound bag.

Do I need a perscription from a vet to use this food?
Answer by ChewyNov 04, 2017
This prescription item requires vet approval. Simply provide your vet's information during checkout, and we'll follow up to confirm the prescription.

Does it help ear yeast infection with growths within the ears in English Springer Spaniels?
Answer by ChewyJun 23, 2018
We would recommend consulting with your veterenarian due to the medical condition, it may require further medical treatment or medicine.

How many calories are in a cup of hill prescription zd dry and wet food?
Answer by ChewyMay 06, 2020
This formula contains approximately 354 calories per cup.

ReviewsWrite a Review

Rated 4.5961 out of 5 stars
869 Reviews
Would recommend to a friend

869 Customer Reviews

Rated 5 out of 5 stars
By Myshadow01 on Aug 8, 2022

Excellent food!

The z/d formula was updated and I was afraid it would be changed. Whatever they did, it did not change the wonderful aroma and beautiful nuggets that we were used to. It seems like my dog cannot tolerate any protein, so I am back to feeding her the prescription diet. It was the only food that did not make her scratch constantly. At first I thought it was only chicken but in the last 6 months, it seems to be that any protein causes the allergy to start up. So we are back to this food. We had good results last time, hopefully it will work again. She loves this food.

Rated 1 out of 5 stars
By Susan on Aug 2, 2022

Inmate K-9 on Hunger Strike

Our Gus, the German Shepherd, has a suspected food allergy (sores on his feet from licking them, and very itchy. Our vet recommended we try this food. He liked it for a week, and it's a week later, and Inmate K-9 is now on hunger strike. He used to eat 1 cup of kibble 3 times a day, and now he's down to only eating once a day, and we have to beg and coax him to do that. I don't know what food we'll try next to address his allergies, but at almost twice the price of his former kibble, this one is seriously detested by poor Gus.

Rated 5 out of 5 stars
By tina on Jun 28, 2022

Best for my shih tzu

We've literally tried all kinds and brands of high end dog food, low end dog food and food for sensitive dogs. This food was recommended by my vet, and prescription was given after I finally gave up trying to fix his issues myself. This food is the one that has helped him. He's never looked it felt better. Granted when he's dirty he still stinks like a wet dog, but he no longer chews his hair off, and he's getting a nice thick coat of hair. He can focus on being a shih tzu without constant chewing and scratching himself. We use the prescription treats also. The food is readily eaten by both my dogs, and they love the treats as well.

Rated 5 out of 5 stars
By Cavaliermama on Jul 29, 2022

Great service

We have tried other online pet stores, but have always had problems, either shipping wrong size or not being available over the weekend if you have issues. We have never had any issues with Chewy. Orders are always prompt and I know that I can call at any time and get a human on the phone. Thank you Chewy!

Rated 5 out of 5 stars
By TreeSwan on Jul 6, 2022

Grateful Puppy

Our German Shepherd puppy has severe food allergies, and we put him on this food while we try to isolate the allergens. He loves these chicken-flavored pellets, and will eat them dry or with a bit of warm water mixed in. Frankly, we have never owned a dog who would eat straight kibble without an assortment of add-ins.Thus, we were mildly shocked when our puppy gobbled these up!

Rated 2 out of 5 stars
By SAllen on Aug 1, 2022


This is not the original formula that my dogs have been eating for the past 3 years, and they will not touch this food. Why do companies feel the need to change dog food all the time? Unless you are making it better, just create a new food and don't change the old, please!!

Rated 5 out of 5 stars
By Sally on Jun 19, 2022

Diagnosed with IBD

Too early to tell. My dog has been very sick. After a 2 month process Sally was diagnosed with IBD and we are on a food trial plus medicine. This is our 2nd bag, smells great and she seems to like the flavor. Until she is off the medicine we won’t know if the ZD food diet will work for her. Chewy has been helpful and understanding our difficult situation, I wouldn’t shop anywhere else!

Rated 5 out of 5 stars
By MomofJRT7229 on Jun 1, 2022

Bella Loves it!

Our JRT can't survive without it. She can't handle any other food. She will bite her skin to the point of drawing blood creating horrible sores and bald spots. The itching and biting even keeps her up at night when we try any other food. WE RECOMMEND IT VERY HIGHLY FOR DOGS WITH SKIN SENSITIVIES! IT HAD BEEN A LIFE SAVER FOR OUR DOG AND US! I SINCERELY HOPE IT HELPS EVERY DOG THAT TRIES IT!

Rated 5 out of 5 stars
By CoopersMom on Aug 14, 2022

perfect prescription for Cooper

of course this diet is prescribed and works great but ordering from Chewy makes it seamless. Gets here so quickly!

Rated 4 out of 5 stars
By Ruthie on May 26, 2022

He's doing better!

Scruffy has just started on Hills z/d and seems to be doing better. Gaining weight and feeling peppy. Have ordered and received the larger bag of food and now on automatic order. Since this is a new food for him, not sure when additional food will be needed. How can I change order? Thanks.