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

by Hill's Prescription Diet
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Product Change Notice:        Hill's Prescription Diet z/d Food Sensitivities Dry Cat 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 z/d Hydrolysed Dry Cat 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, supports digestive health and improve quality stool.

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 Cat Food is specially formulated by Hill’s nutritionists and veterinarians to manage cats' food sensitivities.
  • Nutrition formulated to help reduce scratching, itching, and digestive issues caused by adverse food reactions.
  • Made with highly hydrolysed proteins that are broken down to avoid detection by the immune system.
  • Promotes healthy skin barrier & helps eliminate food related causes of skin irritation.
  • Continued feeding reduces risk of adverse food reactions & promotes healthy skin and digestion.
  • Rich in Omega-6 & 3 fatty acids to promote skin health and regeneration.
  • Nutrition to improve stool quality & promotes a healthy gut microbiome.
  • Made with ActivBiome+ Digestion, a proprietary blend of prebiotic fibres shown to rapidly activate the gut microbiome to support digestive health and well-being.ighly hydrolysed protein.
  • 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:

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

Nutritional Analysis:

Crude Protein (min)15.5%
Crude Fat (min)11%
Crude Fibre (max)8%
Moisture (max)10%
Omega-3 Fatty Acids* (min)0.5%
Omega-6 Fatty Acids*, (min)1.5%

Feeding Guidelines:

 

Weight of Cat - lbs (kgs)Amount per Day - cups (grams)
6 (2.7)3/8 (45)
8 (3.6)1/2 (60)
10 (4.5)1/2 (60)
12 (5.4)5/8 (75)
14 (6.4)3/4 (90)
16 (7.3)3/4 (90)
18 (8.2)7/8 (105)

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 cat, 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 cat get back to living their best life, no matter what condition your cat is facing.

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

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

KIDNEY
Clinical nutrition to support your cat's kidney function proven to improve & lengthen quality of life.

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 3 customer ratings
  • "Z/D Hills Cat Food"
    Posted byElizabeth Saldirayon30th Dec 2022

    Brilliant service, quick delivery!

  • "Hills ZD diet"
    Posted byChristine Clarkon17th May 2020

    Interesting to read in previous review that the formula for these biscuits has changed, as my cat previously ate them out of hunger also but is eating this latest packet with much more enthusiasm. Also a lockdown purchase so as not to bother the vet clinic and arrived very promptly - and cost less.

  • "My cats love this"
    Posted bySusanna Mayeron9th May 2020

    One of my cats has had a very sensitive stomach since she was a kitten. She's now 8 and has been on these Z/D biscuits for around 7 years and no longer has any issues. We have two cats, both get the same diet. To be honest, neither liked these biscuits much but ate them out of pure hunger. Hills have recently changed the formula and no joke, both cats are going nuts for them. So much so I was considering asking Hills if they have any of the old formula because our cats won't leave us alone and want more biscuits constantly! Pet Direct delivered these to us super quickly under lockdown which was awesome. Really happy with the purchase (even though our cats are driving us insane).

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