Hill's Prescription Diet d/d Skin/Food Sensitivities Potato & Duck Recipe Dry Dog Food, 25-lb bag

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About This Item

Details

  • Highly digestible single intact animal protein source and single carbohydrate source to help avoid common food sensitivities in a gluten-free formula
  • High levels of omega-6 and omega-3 fatty acids that help nourish the skin and coat
  • Combination of clinically proven antioxidants helps maintain a healthy immune system and skin barrier function
  • Four different novel protein sources to provide more choices in managing food sensitivity
  • Helps improve digestion and stool quality with visible improvements in the skin and coat

Ingredient Information

Feeding Instructions

FAQ

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

Original

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

Chicken

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

Questions & Answers

16 Customer Questions


If my dog is on derm can i switch him to the d/d food?


What does d/d stand for?


I see the bag says “New Formula and kibble”. Can you tell what has changed? Is it possible to see the ingredient side of the bag? Thank you

Answer by ChewyFeb 15, 2021
For a complete list of ingredients and the guaranteed analysis, click the “Nutritional Info” tab, next to the “Description” tab, just under the product photos when viewed on a desk top. Click the "Nutritional Info" tab, next to the "Q&A" tab, towards the top bar above the product image when viewed on the app.

Our vet recommended this for our diabetic baby but is this something our other fur baby can enjoy and have as well?

Answer by ChewyDec 01, 2020
Veterinary diets are formulated with the precise ingredients and nutrients needed to address specific medical issues. It is not recommended to feed this to a pet it is not prescribed for.

4.7
Rated 4.7 out of 5 stars
531 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

87% Positive

Effectiveness

90% Positive

Ingredients

88% Positive

Long-Term Benefits

85% Positive

242 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By Becca on Jul 11, 2019

This saved my Boston!

After 3 years of owning my Boston who is allergic to *EVERYTHING* from chicken, to grass, to bees, to immunizations, etc. he constantly had tummy troubles off and

After 3 years of owning my Boston who is allergic to *EVERYTHING* from chicken, to grass, to bees, to immunizations, etc. he constantly had tummy troubles off and on. The most recent time was for 4 weeks & I felt so helpless. Before this food it was normal for my Boston, Rudy, to throw up at LEAST 3 times a day and have diarrhea or soft stool every other day. My vet finally recommended this prescription food for him and after 3 DAYS my boy was back to a Rudy I haven’t seen in close to 2 years. His poop is completely solid, the throwing up has completely gone away he isn’t even throwing up water now, & he is so spunky and happy! Can we also mention he isn’t itching his ears anymore & no more tear stains!?!? Not to mention the biggest kicker for my picky boy, he is EAGER for his food to go in his bowl! We have tried regular Hills Science Diet active and he was allergic, we have tried 3 different Taste of the Wild, and many more. 5 STARS FROM ME !!!!


Rated 5 out of 5 stars
By PoodleParent on Mar 22, 2026

Vet Recommended

Recommended by Internal Medicine/GI specialist at Auburn University School Of Veterinary Medicine for my boy who was experiencing chronic gastritis, mushy stools,

Recommended by Internal Medicine/GI specialist at Auburn University School Of Veterinary Medicine for my boy who was experiencing chronic gastritis, mushy stools, bouts of vomiting and chronically elevated Alkaline Phosphatase (ALP). He has been on this now since late November 2025 and there has been a dramatic improvement in his stools. They have really firmed up and are not as mushy; at times they are almost dissecated they are so dry (they will almost crumble when I pick them up!) He has not had anymore bouts of full blown gastritis (knock on wood). He had labs drawn a week and a half ago; he has a check up again in a few days, so I will find out the results then. Unfortunately, he still has episodes of vomiting and food aversion/refusing to eat, so I'm not sure what that is all about. When this happens I sneak 8 mg of Zofran down his throat and that seems to help. Overall, I have been real happy with the Hill's Duck D/D food. If you mix it with a little bit of hot water prior to feeding, it makes a lovely gravy which my boy really seems to like. His sister seems to like it too, she will try to steal his food if he refuses to eat it. You can't go wrong with Hill's Prescription Diet. I just wish it came cheaper. But you get what you pay for. Thank goodness I got this dog top of the line insurance!


Rated 4 out of 5 stars
By Lyndon on Jan 18, 2022

Allergies!

I’ve been paying half the price for twice the food, so, I am not pleased with the cost at all. With that said, this dog food has made a huge difference in my mastiffs’

I’ve been paying half the price for twice the food, so, I am not pleased with the cost at all. With that said, this dog food has made a huge difference in my mastiffs’ life. I feed less and the back yard is seeing a positive result as well. This has made a huge impact on his allergies, he still them of course, but the food has given him relief from all the symptoms. So, weigh your options and consider the day to day life of your dog.


Rated 5 out of 5 stars
By Dogmom on Mar 4, 2019

Great customer service on prescription diet rush order.

Thank you so much for your wonderful service and rapid response!! My dog was deathly ill with a food allergy and needed a prescription diet right away. The terrific

Thank you so much for your wonderful service and rapid response!! My dog was deathly ill with a food allergy and needed a prescription diet right away. The terrific folks at Chewy coordinated with my Vet to get a prescription and immediately shipped the special diet that arrived 36 hours, just in the nick of time!! Thank you so much from the bottom of my heart!!!! The product is always nice and fresh too. Always a pleasure doing business with Chewy!


Rated 5 out of 5 stars
By Hollipop on Jan 17, 2015

This product has a flavor my dog loves.

When my dog was given this prescription from the vet I thought "he's never going to eat this". My german Shepherd is the pickiest dog around, I usually have to doctor

When my dog was given this prescription from the vet I thought "he's never going to eat this". My german Shepherd is the pickiest dog around, I usually have to doctor up his food with hamburg or chicken, but not the duck and potato, he actually eats this without anything added. It's like a miracle with Max and we are all shocked!


Rated 5 out of 5 stars
By DannyLab on Apr 6, 2022

Would continue!

My 1.5 years old Lab Cattle dog mix has food sensitivity/IBD. This is the only food that's been working for him so far. He definitely is doing much better in terms

My 1.5 years old Lab Cattle dog mix has food sensitivity/IBD. This is the only food that's been working for him so far. He definitely is doing much better in terms of stomach, skin and healthy weight. He has put on muscles. No diarrhea episode has occurred since we switched to this food. He's a picky eater, so nice to have multiple flavor options in this category. I also love the fact that they add Taurine in the food since there was some investigation couple of years back regarding lack of taurine in grain free food and DCM in dogs. I surely trust Hill's as a brand and definitely they were not in that list of 16 brands. The only thing that's a little downside on this would be the cost, but since I'm getting the quality and results for this cost and it made my pup feel better - I guess I made my peace with that. Also, Venison is not available in market for some reason and Duck flavor is not available to buy on stores, I haven't found a wet food anywhere. So I'd love to see more availability on these 3 variety for d/d and the canned food.


Rated 5 out of 5 stars
By Diana on Oct 25, 2025

Not too bad!

So far Ellie Mei is eating this food. She is a really picky eater and if she doesn't like something she won't eat it. I do mix in a little canned food. After a few

So far Ellie Mei is eating this food. She is a really picky eater and if she doesn't like something she won't eat it. I do mix in a little canned food. After a few days on this food her red areas (she's all white) began to turn pink. She is not scratching as much. I think we are headed in the right direction after months of thinking she had only environmental allergies. When she saw her vet recently, she should have cleared up with the supplements, limited ingredient diet and allergy medication she was on since the spring. Her vet decided to put her on this food and see what happens. Fingers crossed she'll keep heading in the right direction and finally get some relief!


Rated 5 out of 5 stars
By Julie on Mar 13, 2016

Life Saver!

After 3-1/2 years, we finally found a food that works. This was our last resort before seeing a specialist, which we really couldn't afford. We have tried everything,

After 3-1/2 years, we finally found a food that works. This was our last resort before seeing a specialist, which we really couldn't afford. We have tried everything, including raw, dehydrated raw, freeze dried, top of the line kibble, home cooking, etc. We did allergy testing and found out that flax, coconut, sweet potatoes, chicken, beef, salmon, turkey, apples, broccoli and lamb were problems (to name a few). Our poor sweet dog would either have GI upset from the food, or severe itching. Prescription food was our last resort just because of all the bad things that people would say about it. Although the ingredients don't thrill us, it works for our dog. After just a couple weeks, she no longer licks her paws constantly, she is not up all night scratching and no GI issues at all...stools are perfect. We also give a probiotic by Mercola and she is doing great!!


Rated 5 out of 5 stars
By Bridgett on Nov 21, 2025

Good quality

The only thing l don't like is the price. Outside of that, the food smells really good and my dogs allergies seem to be non existent on this food. I'll know more

The only thing l don't like is the price. Outside of that, the food smells really good and my dogs allergies seem to be non existent on this food. I'll know more in 4 months, how he's handling it, but we had a lot of luck with the hydrolyzed protein flavor as well so I'm sure either or will be fine for him.


Rated 5 out of 5 stars
By Blue on Aug 18, 2021

10/10 Recommend for Sensitive Doggos!

Okay I NEVER leave reviews on anything but this dog food has worked miracles for my boy Blue. After 3+ weeks of bloody, mucousy diarrhea and vomiting, countless

Okay I NEVER leave reviews on anything but this dog food has worked miracles for my boy Blue. After 3+ weeks of bloody, mucousy diarrhea and vomiting, countless trips to the vet, a number of diet changes, this food literally solved the problem OVERNIGHT!! Received the food to my doorstep yesterday evening, fed it to him for dinner, and this morning his stool was back to normal and he was acting himself immediately after eating!! Not to mention, he is the pickiest eater (so spoiled) and had been on a home cooked food diet for the 3+ weeks, I thought there was no way he was going to even touch this food. He got excited the second I brought the box inside and SCARFED it down when I gave it to him. I will never feed him anything else ever again, seriously a life saver. I could seriously cry I'm so relieved. Chewy is also amazing and I received my package overnight.