z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food Packshot
z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food Packshot
z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food Food Shot Scale
z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food How It Helps
z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food How It Works
z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food Key Claims
z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food Ingredient Panel
Alt Text

Roll over image to zoom in

Hill's Prescription Diet

z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food



8lb, 17.6lb, 25lb

Nutrition specially formulated with hydrolyzed soy protein and low fat levels to help avoid adverse food reactions and promote healthy skin in dogs with food and fat sensitivities. Fortified with Hill's breakthrough ActivBiome+ ingredient technology clinically shown to rapidly activate the gut microbiome to support digestive health and well-being.


Food Sensitivities


Hydrolyzed Soy Recipe


Small Breed, Medium Breed, Large Breed


Adult, Senior



Satisfaction guarantee

If you are unsatisfied for any reason, return the unused portion to the place of purchase for a full refund or replacement

Dogs with recurrent gastrointestinal upset may have a food or fat sensitivity. Dogs that have a food allergy (typically to a protein in the food) or intolerance, may respond to a food designed for food sensitivities while dogs with a fat sensitivity require a low fat food but determining which nutrition to use is frequently a trial and error process.

With this in mind, Hill's nutritionists and veterinarians developed Prescription Diet z/d Low Fat, which is clinical nutrition specially formulated for dogs with food and fat sensitivities.

How it works:

  • Highly digestible, hydrolyzed soy protein & low in fat
  • Rich in omega-6, and 3 fatty acids from fish oil
  • Unique prebiotic blend to fuel activity of beneficial gut bacteria
  • Clinically proven antioxidants
  • Formulated without intact animal protein sources

How it helps:

  • Nutrition to help manage food & fat sensitivities
  • Formulated to help improve skin & coat
  • Formulated to promote easy digestion & help normalize stool
  • Helps support a healthy immune system
  • S+OXSHIELD: Formulated to promote a urinary environment that reduces the risk of developing struvite & calcium oxalate crystals

Additional info:

Hill's Prescription Diet z/d Low Fat Dry Dog Food is a complete and balanced food that provides all the nutrition your dog needs. Please consult your veterinarian for further information on how our Prescription Diet foods can help your dog to continue to enjoy a happy and active life.

Formulated to help

reduce the risk of struvite & calcium oxalate crystals

Made in the USA
with global ingredients you can trust

Proud to have helped
14 million shelter pets
find a forever home & counting


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

Adult maintenance

Weight of Dog - lbs (kgs) Amount per Day - cups (grams)
5 (2,3) 2/3 (65)
10 (4,5) 1 1/8 (110)
15 (6,8) 1 1/2 (150)
20 (9,1) 1 3/4 (175)
30 (14) 2 1/2 (250)
40 (18) 3 (295)
50 (23) 3 2/3 (365)
60 (27) 4 1/4 (420)
70 (32) 4 3/4 (470)
80 (36) 5 1/4 (520)
100 (45) 6 1/4 (620)
120 (54) 7 (695)

Animal feeding tests using AAFCO procedures substantiate that Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food provides complete and balanced nutrition for maintenance of adult dogs.

Ask your veterinarian for specific feeding instructions for your pet. Daily Feeding Recommendations are only a guide and a place to start. Grams are the most accurate form of measurement; cups are estimated from grams. For best results: – Gradually transition to this new food for 7 days or more. – Exclusively feed the recommended Prescription Diet dry and wet foods. – Keep fresh water available at all times. – Have your veterinarian monitor your pet's condition. – To prevent suffocation, keep the packaging out of the reach of pets & children.



Days 1-2

Days 3-4

Days 5-6

Day 7

Days 1-2

Days 3-4

Days 5-6

Day 7

Days 1-2

Days 3-4

Days 5-6

Day 7

3198 kcal/kg (317 kcal/cup†)

Nutrient Dry Matter1
Protein 27 %
Fat 7.4 %
Carbohydrate / NFE 55.4 %
Crude Fiber 4.5 %
Calcium 0.8 %
Phosphorus 0.55 %
Potassium 0.85 %
Sodium 0.38 %
Magnesium 0.1 %
Vitamin C 123 ppm
Vitamin E 741 IU/kg
EPA 0.084 %
Total Omega-3 FA 0.6 %
Total Omega-6 FA 2.07 %
Carnitine 350 ppm


1The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles with differing moisture contents.

†An eight fluid oz. measuring cup of z/d Low Fat Hydrolyzed Soy Recipe Dry Dog Food contains 3.5 oz. by weight.



Prescription Diet®

Groundbreaking nutrition that can save the lives of sick pets and comfort the people who care for them.

Find Out More