Hill's Prescription Diet z/d Food Sensitivities Dry Dog Food - Petdirect
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Hill's Prescription Diet z/d Food Sensitivities Dry Dog Food

by Hill's Prescription Diet
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Product Change Notice:        Hill's Prescription Diet z/d Food Sensitivities Dry Dog Food

From September 2025 this product will have minor formulation changes due to exciting scientific developments and enhancements from Hill's Pet Nutrition.   The improved z/d recipes are now fortified with Hill's breakthrough ActivBiome+ ingredient technology clinically shown to rapidly activate the gut microbiome to support digestive health and well-being. During this time you may receive either variety as the updated products start to arrive. 
There are no expected changes to palatability, however with veterinary diets and sensitive pets a 7-10 day feeding transition is recommended to support pets through any adjustments to their diet. 

The product details on this page reflect the NEW formula. 

For any other questions regarding this update or the status of our current stock available please contact the Petdirect Customer Care team.  

Description:

Hill's Prescription Diet z/d Hydrolysed Dry Dog Food is clinical nutrition to help reduce skin irritation, scratching and digestive issues from adverse food reactions. 
Fortified with ActivBiome+ Digestion blend, it rapidly activates the gut microbiome and supports digestive health. Nutrition shown to firm loose stool in 3 days.

Made in the USA with global ingredients you can trust. Developed by Hill’s nutritionists and veterinarians.  Veterinarians can provide additional guidance on how Hill’s Prescription Diet products can be fed long-term to help support overall well-being.

Learn more about Hill's Prescription Diet food.

Key Benefits:

  • Hill's Prescription Diet z/d Hydrolysed Dry Dog Food is specially formulated by Hill’s nutritionists and veterinarians to manage dogs' food sensitivities.
  • Nutrition clinically proven to help avoid skin and digestive signs of adverse food reactions.
  • Made with highly hydrolysed proteins that are broken down to avoid detection by the immune system.
  • Rich in Omega-6 & 3 fatty acids to promote skin health and regeneration.
  • Continued feeding reduces risk of adverse food reactions & promotes healthy skin and digestion.
  • Formulated to support visible improvement in skin & coat in 30 days.
  • Clinically shown to firm loose stool in 3 days.
  • Made with ActivBiome+ Digestion, a proprietary blend of prebiotic fibres shown to rapidly activate the gut microbiome to support digestive health and well-being.High levels of vitamin E and natural fibre
  • Backed by Hill's 100% Satisfaction Guarantee

This is a veterinary diet and should be used with your vet's support and recommendation that it suits the health needs of your pet. Details accurate at time of publication. Please refer to the product packaging for further information

Ingredients:

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

Nutritional Analysis:

Crude Protein (min)14.5%
Crude Fat (min)10%
Crude Fibre (max)6%
Moisture (max)10%

Feeding Guidelines:

Weight of Dog (lbs / kgs)Amount per Day (cups & grams)
5 (2.3)5/8 (60)
10 (4.5)1 (100)
15 (6.8)1 & 1/3 (130)
20 (9.1)1 & 2/3 (165)
30 (14)2 & 1/4 (225)
40 (18)2 & 3/4 (270)
50 (23)3 & 1/3 (330)
60 (27)3 & 3/4 (370)
70 (32)4 & 1/4 (420)
80 (36)4 & 2/3 (460)
100 (45)5 & 1/2 (545)
120 (54)6 & 1/3 (625)

New to this food? Mix increasing amounts of your pet's new food with decreasing amounts of the old food over a 7 day period, or longer. 

Keep fresh water available at all times! Your pet's nutritional needs may change as they age. Ask your vet at every checkup.

Storage and Disposal Instructions
Store dry and in closed original packaging.

100% SATISFACTION GUARANTEE 
At Hill’s, we’re dedicated to making foods your pet will love. If you’re not satisfied for any reason with a product purchased from one of our authorised sellers, simply return the unused portion to the place of purchase for your money back or a replacement product.

Hill's Prescription Diet

Hill’s Prescription Diet has combined the expertise of more than 220 veterinarians, scientists and pet nutritionists to deliver the best nutrition-based solutions that help you recapture a normal, vibrant life together.

Alongside your veterinarian’s recommendation, the Hill’s Prescription Diet range can help support your pet’s weight, mobility, kidney, digestive, urinary or skin and coat health.

Learn more about Hill's Prescription Diet food.

100% SATISFACTION GUARANTEE 
At Hill’s, we’re dedicated to making foods your pet will love. If you’re not satisfied for any reason with a product purchased from one of our authorised sellers, simply return the unused portion to the place of purchase for your money back or a replacement product. 

Icons/pill (path)
Veterinary support and advice supplied by our in house vet team

HILL’S PET NUTRITION: PREMIUM PET FOOD BACKED BY SCIENCE

Developed by a team
of PhD nutritionists
and veterinarians.

Nutrition clinically tested for a range of conditions unique to each pet.

Available in both dry & wet for added variety.

Check with your vet before making changes to your pet's diet.

 

We all want our pets to be healthy, but if your vet identifies specialised nutritional needs for your dog, you can rely on Hill’s Prescription Diet foods to help you care for them with every bite.

Every food is formulated with innovative nutritional science to help your dog get back to living their best life, no matter what condition your dog is facing.

BIOLOGY-BASED
NUTRITION
CLINICALLY TESTED NUTRITIONAL SOLUTIONS TO HELP TRANSFORM YOUR DOG'S LIFE

DENTAL
Clinically proven nutrition to reduce plaque, stain & tartar buildup

JOINT
Clinically proven nutrition to support your dog's ability to run, walk and jump

WEIGHT
Nutrition specially formulated to support healthy weight loss and maintenance

URINARY
Clinical nutrition specifically formulated to support your pet's urinary health

GI
Clinical nutrition to help promote growth of beneficial gut bacteria and improve stool quality and digestive health

Food Shelter Love
100% Satisfaction

Reviews

5 out of 5 stars
Based on 5 customer ratings
  • "Very good"
    Posted bySandy Burmesteron11th Jul 2025

    We have been feeding Poppy our beagle with this food for quite awhile now, with permission from our vet. When we first got her 2 years ago she had super itchy feet, now they are greatly improved. Tried raw feeding for a little while, but came back to this food as her tummy was a little off on raw. We knew we can count on this food to keep her healthy.

  • "Hill's Prescription Diet z/d Food Sensitivities Dry Dog Food"
    Posted byWendy Earleon1st Dec 2022

    Tried what seemed like everything else for my puppys tummy issues over a year. Finally something that works - wish I'd found it sooner!

  • "ZD prescription dog food"
    Posted byRhona Shawon8th Sep 2022

    Easy to order once I found it was in prescription food. Good communication, promopt delivery. Great service thank you.

  • "Hills zd skin sensitivity biscuits "
    Posted byJoy Crutchleyon29th Jun 2021

    Good price with fast delivery. Only just started using this company but seem very reliable so would recommend to my friends

  • "Hills z/d dogs "
    Posted byLisa Rogerson6th Mar 2021

    This is the only food that worked for my dog with chronic pancreatitis and reflux. Overnight was stopped after eating z/d. Wish vet had put me onto it earlier

All orders are dispatched from Petdirect’s Auckland and Christchurch warehouses, offering fast, reliable delivery throughout New Zealand.

Standard Shipping
  • Next working day delivery for most main centres
  • 2 business days to regional areas
  • 3 business days to rural addresses

Free shipping on orders $79.00 and over
Flat $5.90 delivery for smaller orders

Evening Express

This is ideal for urgent pet supply needs within the Auckland and Christchurch regions.

Available in eligible Auckland and Christchurch suburbs only.

  • Same-day delivery if you order before 2pm Monday–Friday.
  • Cost is $15.95 per order.
  • Orders placed after 2pm or during weekends/public holidays will be delivered the next business evening.
  • Eligible addresses can select evening express shipping at checkout.

See our shipping & delivery page for more information

You have 30 days to return products in original condition if you change your mind. Courier costs apply for change-of-mind returns.

If we made a mistake or your order is faulty or damaged, we’ll make it right — and cover the return shipping.

In-person returns are welcome at our Auckland store or Christchurch warehouse (by appointment).

See our full returns & refunds policy for more detail