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z/d Low Fat Hydrolysed Soy Dry Dog Food

z/d Low Fat Hydrolysed Soy Dry Dog Food

Hills Prescription Diet

Overview

Hill's Prescription Diet z/d Low Fat Hydrolysed Soy Dry Dog Food is a hypoallergenic dry diet formulated for dogs with food sensitivities or adverse food reactions who also require a reduced fat intake. Many dogs with food allergies or intolerances develop symptoms such as chronic itching, ear infections, recurring digestive issues, and skin inflammation that can be difficult to manage. This formula uses hydrolysed soy protein — broken down to a molecular level unlikely to provoke an immune response — while maintaining a low fat profile to support tolerability in sensitive digestive systems.

Formulated by Hill's nutritionists and veterinarians, it is designed to be fed as a sole diet to effectively identify and manage food-related reactions. It provides complete and balanced daily nutrition in a convenient dry format. Always consult your veterinarian before introducing this diet as part of an elimination or long-term allergy management programme.


Nutritional Analysis

A nutritional analysis shows how a dog food is made up of its main nutrients, such as protein, fat, fibre and other components. This helps you understand where the food’s nutrition and energy come from, and how the formula is balanced.

Protein
27
%
0%
Fat
7.4
%
0%
Fibre
4.5
%
0%
Ash
2.68
%
0%
Carbohydrates
55.4
%
0%
Energy
319.8
0
 kcal/100g

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, L-Ascorbyl-2-Polyphosphate, Niacin, Thiamine Mononitrate, Pyridoxine Hydrochloride, Calcium Pantothenate, Riboflavin, Vitamin A, Biotin, Vitamin B12, Folic Acid, Vitamin D3), 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.

Corn Starch
Corn Starch

Maize Starch, Zea Mays Starch, E1401, Maizena

Summary

Corn starch is a fine, white powder derived from the endosperm of corn kernels, making it a plant-based ingredient. It is primarily used as a carbohydrate source and functional thickener in pet foods, aiding in texture and digestibility. Corn starch is utilised in its processed, refined form rather than as whole corn, ensuring consistency and optimal absorption in formulated diets.

Manufacturer Benefits

Corn starch is included as a cost-effective carbohydrate source and bulk-adding agent, helping to optimise product texture and binding. It also contributes to shelf stability by absorbing moisture and preventing spoilage.

Hydrolysed Soy Protein
Hydrolysed Soy Protein

Hydrolyzed Soy Protein, Hydrolysed Soya Protein, Hydrolyzed Soya Protein, Glycine Max Protein Hydrolysate

Summary

Hydrolysed soy protein is a plant-derived ingredient produced by breaking down whole soybeans into smaller peptides and amino acids through hydrolysis. It is primarily included in pet food for its highly digestible protein content, supporting muscle maintenance and overall health. Rather than using whole soybeans, hydrolysed soy protein is utilised in its processed form to enhance digestibility and reduce allergenic potential.

Manufacturer Benefits

Hydrolysed soy protein is included as a cost-effective, highly digestible source of plant-based protein that can help meet nutritional requirements while supporting hypoallergenic or limited-ingredient formulations. Its use also enhances palatability and improves product texture.

Cellulose Powder
Cellulose Powder

Microcrystalline Cellulose, Powdered Cellulose, E460, Cellulosum

Summary

Cellulose powder is a plant-derived ingredient sourced primarily from wood pulp. It serves as an insoluble dietary fibre, supporting digestive health and stool quality in pets. Rather than being used in its raw, fibrous state, cellulose is processed into a fine powder to optimise its functional benefits and ensure safe, consistent inclusion in pet food formulations.

Manufacturer Benefits

Cellulose powder is included as a cost-effective fibre source to aid stool quality and promote digestive health. It also functions as a bulk-adding agent, helping to control calorie density in pet food formulations.

Dicalcium Phosphate
Dicalcium Phosphate

Calcium Hydrogen Phosphate, Dibasic Calcium Phosphate, E341(ii), Calcium Phosphate Dibasic

Summary

Dicalcium phosphate is a mineral compound derived from calcium and phosphorus, commonly sourced from phosphate rock. It serves as a key dietary supplement in pet foods, providing essential calcium and phosphorus to support healthy bones and teeth. Dicalcium phosphate is not used in its natural raw or metallic state; instead, it is utilised in its purified compound form to ensure safety and optimal absorption.

Manufacturer Benefits

Dicalcium phosphate is included as a cost-effective mineral supplement to provide essential calcium and phosphorus for skeletal health. It also serves as a functional agent to improve product texture and processing stability.

Soybean Oil
Soybean Oil

Glycine Max Oil, E322, Soya Oil, Soya Bean Oil

Summary

Soybean oil is a plant-derived oil extracted from the seeds of the soybean (Glycine max). It serves as a concentrated source of energy and provides essential fatty acids, particularly linoleic acid, which supports skin and coat health in pets. Soybean oil is utilised in its refined liquid form, not as whole soybeans, to optimise digestibility and nutrient availability in pet food formulations.

Manufacturer Benefits

Soybean oil is included as a cost-effective source of fat and essential fatty acids, supporting energy density and skin and coat health in pet food. It also contributes to product texture and palatability while helping to optimise manufacturing costs.

Hydrolysed Chicken Flavour
Hydrolysed Chicken Flavour

Hydrolysed Chicken Extract, Hydrolysed Chicken Protein, Hydrolysed Gallus Gallus Domesticus Flavour, Hydrolysed Poultry Flavour

Summary

Hydrolysed chicken flavour is a functional ingredient derived from animal sources, specifically chicken proteins that have been broken down into smaller peptides through hydrolysis. Its primary purpose is to enhance palatability, making pet food more appealing. This ingredient is not used in its natural whole form; instead, it is utilised as a hydrolysed compound to optimise digestibility and reduce allergenic potential.

Manufacturer Benefits

Hydrolysed chicken flavour is included as a palatability enhancer to improve the taste and aroma of the product, encouraging dogs to consume the food. It also allows manufacturers to label the product as containing chicken-derived ingredients without significantly increasing production costs.

Ground Pecan Shell
Ground Pecan Shell

Pecan Shell Powder, Carya Illinoinensis Shell, Pecan Husk Powder, Pecan Shell Fibre

Summary

Ground pecan shell is a plant-derived ingredient sourced from the outer shell of pecan nuts. It is primarily included in pet food as a natural fibre source to support digestive health and promote regular bowel movements. Ground pecan shell is used in its natural, finely milled form, providing a safe and effective means of increasing dietary fibre content in premium pet food formulations.

Manufacturer Benefits

Ground pecan shell is included as a cost-effective fibre source to aid in stool quality and provide bulk to the product. It may also serve as a natural abrasive to support dental health in some formulations.

Coconut Oil
Coconut Oil

Cocos Nucifera Oil, Copra Oil, E472c, Coconut Fat

Summary

Coconut oil is a plant-derived oil extracted from the flesh of mature coconuts. It is primarily included in pet food for its energy-dense medium-chain triglycerides, which support healthy skin, coat, and metabolism. Coconut oil is used in its natural, refined form, ensuring it is safe and readily digestible for pets while delivering its functional nutritional benefits.

Manufacturer Benefits

Coconut oil is included as a source of medium-chain triglycerides, which are marketed for their potential health benefits and digestibility. It also serves as a label-friendly ingredient that appeals to consumers seeking natural or premium pet food formulations.

Lactic Acid
Lactic Acid

2-Hydroxypropanoic Acid, E270, DL-Lactic Acid, L(+)-Lactic Acid

Summary

Lactic acid is an organic compound of microbial origin, commonly produced through the fermentation of carbohydrates. It is primarily included in pet food as a preservative and acidifier, helping to inhibit the growth of harmful bacteria and maintain product freshness. Lactic acid is not used in its natural, raw state but is instead utilised in a purified, food-grade form to ensure safety and effective absorption.

Manufacturer Benefits

Lactic acid is included as a preservative to inhibit microbial growth and extend the product’s shelf life. It may also be used to enhance palatability by providing a mildly tangy flavour that appeals to pets.

Potassium Chloride
Potassium Chloride

E508, Muriate of Potash, Potassium Monochloride, KCl

Summary

Potassium chloride is a mineral compound derived from the element potassium, typically sourced from naturally occurring mineral deposits. It is utilised in pet food as a purified salt rather than in its raw metallic form, ensuring safety and optimal absorption. Its primary purpose is to provide essential potassium, which supports nerve function, muscle contraction, and fluid balance in companion animals.

Manufacturer Benefits

Potassium chloride is included as a cost-effective mineral supplement to help meet pets’ dietary potassium requirements. It also functions as a salt substitute to optimise electrolyte balance in the formulation.

Linseed
Linseed

Flaxseed, Linum Usitatissimum, Flax, Flaxseed Oil

Summary

Linseed, also known as flaxseed, is a plant-derived ingredient sourced from the seeds of the flax plant (Linum usitatissimum). It is primarily included in pet food for its high content of omega-3 fatty acids and dietary fibre, supporting skin health and digestion. Linseed is used in its natural, whole or ground form to optimise nutrient availability and functional benefits.

Manufacturer Benefits

Linseed is included as a source of omega-3 fatty acids and dietary fibre, supporting skin and coat health as well as digestive function. Its presence also allows manufacturers to market the product as containing plant-based nutrients and functional ingredients.

Glycerol Monostearate
Glycerol Monostearate

Monostearin, Glyceryl Stearate, E471, 1-Monostearoyl Glycerol

Summary

Glycerol monostearate is a compound derived from the esterification of glycerol (a plant or animal-based alcohol) and stearic acid (a fatty acid). It serves primarily as an emulsifier, helping to blend fats and water in pet food for improved texture and stability. Glycerol monostearate is not used in its natural raw form but is specifically utilised as a processed compound to optimise safety and functionality.

Manufacturer Benefits

Glycerol monostearate is included as an emulsifier to improve texture and maintain the stability of fats within the pet food, preventing separation during processing and storage. It may also contribute to extending shelf life by helping to retain moisture and inhibit staleness.

Dried Beet Pulp
Dried Beet Pulp

Beet Fibre, Beet Fiber, Beta Vulgaris Pulp, Beta Vulgaris Fibre

Summary

Dried beet pulp is a fibrous by-product derived from sugar beet plants after sugar extraction. As a plant-based ingredient, it serves primarily as a source of fermentable fibre, supporting digestive health and stool quality in pets. Dried beet pulp is used in its processed, dried form rather than as fresh beet, optimising its digestibility and functional benefits in pet food formulations.

Manufacturer Benefits

Dried beet pulp is included as a cost-effective source of dietary fibre to promote digestive health and stool quality in pets. It also serves as a bulk-adding agent, helping to optimise the texture and consistency of the final product.

Dried Citrus Pulp
Dried Citrus Pulp

Citrus Pulp, Citrus Pulp Meal, Citrus Residue, Citrus Spp. Pulp

Summary

Dried citrus pulp is a plant-derived ingredient produced from the residual pulp of citrus fruits after juice extraction. It serves primarily as a source of dietary fibre and fermentable carbohydrates, supporting digestive health and beneficial gut bacteria in pets. Dried citrus pulp is utilised in its processed, dried form rather than as fresh fruit, ensuring stability, palatability, and consistent nutrient content in pet food formulations.

Manufacturer Benefits

Dried citrus pulp is included as a cost-effective source of dietary fibre and energy, supporting digestive health and stool quality. It also serves as a bulk-adding agent, helping to optimise production costs while maintaining product texture.

Methionine
Methionine

L-Methionine, 2-Amino-4-(Methylthio)butyric Acid, E620, L-2-Amino-4-(Methylthio)butyric Acid

Summary

Methionine is an essential amino acid derived from animal or plant sources, crucial for protein synthesis and overall metabolic health in pets. It primarily supports healthy skin, coat, and liver function. Methionine is not used in its raw elemental form; instead, it is incorporated as a specific compound, such as DL-methionine, to optimise safety, stability, and bioavailability in pet food formulations.

Manufacturer Benefits

Methionine is included as an essential amino acid to support protein synthesis and overall health in pets, particularly when animal protein sources are limited or variable. It also serves as a cost-effective way to meet nutritional requirements and optimise the amino acid profile of the final product.

Fish Oil
Fish Oil

Fish Liver Oil, Oleum Piscis, Oleum Jecoris, Oleum Piscarium

Summary

Fish oil is a nutrient-rich oil derived from the tissues of oily fish, making it an animal-based ingredient. It is primarily included in pet food for its high content of omega-3 fatty acids, which support skin, coat, and joint health. Fish oil is utilised in a purified, liquid form rather than as whole fish, ensuring optimal absorption and safety for pets.

Manufacturer Benefits

Fish oil is included as a source of omega-3 fatty acids to support skin, coat, and joint health, enhancing the nutritional profile of the product. Its presence also serves as a marketing point, appealing to consumers seeking functional health benefits for their pets.

Choline Chloride
Choline Chloride

Trimethylethanolamine Chloride, Choline Monochloride, E1001, 2-Hydroxy-N,N,N-Trimethylethanaminium Chloride

Summary

Choline chloride is a synthetic compound derived from choline, an essential nutrient typically sourced from plant or animal origins. It is primarily included in pet food to support healthy brain function, liver metabolism, and cellular structure. Choline is not used in its natural state; instead, it is utilised as choline chloride to ensure stability, safety, and optimal absorption in pet diets.

Manufacturer Benefits

Choline chloride is included as an essential nutrient to support normal liver function and brain health in pets. It is a cost-effective way to meet regulatory requirements for choline content in complete and balanced pet foods.

Calcium Sulphate
Calcium Sulphate

Gypsum, E516, Anhydrite, Dihydrate Gypsum

Summary

Calcium sulphate is a mineral-derived compound commonly included in pet food formulations. Sourced from naturally occurring gypsum, it is not used in its raw mineral state but is instead utilised as a purified, food-grade compound. Its primary purpose is to provide a bioavailable source of calcium, supporting healthy bone development and maintenance in pets, while also serving as a firming agent in some recipes.

Manufacturer Benefits

Calcium sulphate is included as a cost-effective source of calcium to support nutritional balance and bone health in pet food formulations. It also functions as a firming agent, helping to optimise texture and product stability.

Pressed Cranberry
Pressed Cranberry

Cranberry Juice, Vaccinium Macrocarpon Juice, Vaccinium Macrocarpon Extract, Cranberry Extract

Summary

Pressed cranberry is a fruit ingredient derived from whole cranberries, a plant source known for their rich antioxidant content. It is included in pet food primarily to support urinary tract health and provide natural antioxidants. Pressed cranberry is used in its natural, whole-food form, ensuring pets benefit from its full spectrum of nutrients and bioactive compounds.

Manufacturer Benefits

Pressed cranberry is included as a natural source of antioxidants and to enhance the product’s marketing appeal by highlighting fruit content. It may also contribute to urinary tract health claims, supporting a premium positioning in the pet food market.

Vitamin E
Vitamin E

Tocopherol, Alpha-Tocopherol, E307, D-Alpha-Tocopherol

Summary

Vitamin E is a fat-soluble vitamin derived from plant sources such as vegetable oils, nuts, and seeds. It functions primarily as an antioxidant, helping to protect cell membranes from oxidative damage and supporting immune health. In pet food, Vitamin E is not used in its natural raw form but is typically utilised as a stabilised compound, such as tocopherol acetate, to optimise safety and absorption.

Manufacturer Benefits

Vitamin E is included as a natural antioxidant to help preserve the freshness and stability of fats and oils in the product, thereby extending shelf life. It also serves as a label-friendly nutrient that appeals to consumers seeking added health benefits for their pets.

Ascorbyl Polyphosphate
Ascorbyl Polyphosphate

L-Ascorbyl Polyphosphate, Ascorbic Acid Polyphosphate, Polyphosphate Ester of Ascorbic Acid, E304

Summary

Ascorbyl polyphosphate is a synthesised compound derived from vitamin C (ascorbic acid), typically of plant origin. It serves as a stable source of vitamin C, supporting immune function and acting as an antioxidant in pet food. Ascorbyl polyphosphate is not used in its natural form; instead, it is utilised as a phosphate-bound compound to optimise stability and bioavailability.

Manufacturer Benefits

Ascorbyl polyphosphate is included as a stable, cost-effective source of vitamin C that resists degradation during processing and storage. Its use helps manufacturers ensure consistent nutrient labelling and extend the shelf life of the finished product.

Niacin
Niacin

Nicotinic Acid, Vitamin B3, Pyridine-3-Carboxylic Acid, E375

Summary

Niacin, also known as vitamin B3, is a water-soluble vitamin of synthetic or natural origin, commonly derived from plant or animal sources. It plays a crucial role in energy metabolism and supports healthy skin, nerves, and digestion in pets. Niacin is not used in its raw form but is typically included as a safe, bioavailable compound such as niacinamide or nicotinic acid.

Manufacturer Benefits

Niacin is included as an essential B vitamin to meet nutritional requirements and support metabolic health in pets. Its addition ensures compliance with regulatory standards for complete and balanced pet food labelling.

Thiamine Mononitrate
Thiamine Mononitrate

Vitamin B1 Mononitrate, Nitrate Salt of Thiamine, E101a, Thiamin Mononitrate

Summary

Thiamine mononitrate is a synthetic, water-soluble form of vitamin B1, derived from chemical synthesis rather than natural sources. It is added to pet food to support energy metabolism and proper nervous system function. Thiamine is not used in its natural state; instead, the mononitrate compound is utilised for stability, safety, and optimal absorption in formulated diets.

Manufacturer Benefits

Thiamine mononitrate is included as a stable, cost-effective source of vitamin B1 to meet nutritional requirements and ensure product labelling compliance. Its synthetic form maintains potency during processing and storage, supporting both product stability and regulatory standards.

Pyridoxine Hydrochloride
Pyridoxine Hydrochloride

Vitamin B6, E300, Pyridoxine HCl, Pyridoxine Monohydrochloride

Summary

Pyridoxine hydrochloride is a synthetic, water-soluble form of vitamin B6, derived from chemical synthesis rather than natural sources. It is added to pet foods to support protein metabolism, nervous system health, and immune function. Unlike naturally occurring vitamin B6 in foods, pyridoxine is utilised in its hydrochloride salt form to ensure stability, safety, and optimal absorption in companion animals.

Manufacturer Benefits

Pyridoxine hydrochloride is included as a cost-effective, stable source of vitamin B6 to ensure nutritional adequacy and meet regulatory labelling requirements. Its addition helps manufacturers guarantee consistent vitamin content throughout the product’s shelf life.

Calcium Pantothenate
Calcium Pantothenate

D-Calcium Pantothenate, E315, Pantothenic Acid Calcium Salt, Calcium D-Pantothenate

Summary

Calcium pantothenate is a synthetic compound derived from pantothenic acid, a water-soluble B vitamin (vitamin B5) of plant or animal origin. It is primarily included in pet food to support energy metabolism and maintain healthy skin and coat. Rather than using pantothenic acid in its natural form, calcium pantothenate is utilised for its stability, safety, and enhanced bioavailability in pet nutrition.

Manufacturer Benefits

Calcium pantothenate is included as a stable, bioavailable source of vitamin B5 to meet nutritional requirements and support labelling claims of complete and balanced nutrition. Its use ensures consistent vitamin content throughout the product’s shelf life.

Riboflavin
Riboflavin

Vitamin B2, E101, Lactoflavin, 7,8-Dimethyl-10-Ribityl Isoalloxazine

Summary

Riboflavin, also known as vitamin B2, is a water-soluble vitamin of synthetic origin commonly added to pet foods. It plays a crucial role in energy metabolism and supports healthy skin, eyes, and nervous system function. Riboflavin is not used in its natural form but is typically utilised as a synthesised compound to ensure stability, safety, and optimal absorption in pet diets.

Manufacturer Benefits

Riboflavin is included as an essential vitamin to meet nutritional requirements and ensure regulatory compliance for complete and balanced pet food labelling. Its addition helps optimise the product’s nutrient profile without significantly impacting cost or palatability.

Vitamin A
Vitamin A

Retinol, Retinyl Palmitate, Retinyl Acetate, E160a

Summary

Vitamin A is an essential fat-soluble nutrient derived from animal sources (as retinyl esters) or plant sources (as carotenoids). It supports vision, immune function, and skin health in pets. In pet food, Vitamin A is not used in its raw or natural state but is provided as stabilised compounds (such as retinyl acetate or retinyl palmitate) to ensure safety, stability, and optimal absorption.

Manufacturer Benefits

Vitamin A is included as an essential nutrient to support vision, immune function, and overall health in pets, ensuring the product meets established nutritional standards. Its addition also allows manufacturers to optimise the nutritional profile and comply with regulatory labelling requirements.

Biotin
Biotin

Vitamin B7, Vitamin H, D-Biotin, Coenzyme R

Summary

Biotin is a water-soluble B-vitamin (vitamin B7) of synthetic origin, commonly included in pet foods to support healthy skin, coat, and metabolic function. Its primary benefit is aiding in the metabolism of fats, proteins, and carbohydrates. Biotin is not used in its natural, free form but is instead utilised as a stable, bioavailable compound to optimise absorption and efficacy in pets.

Manufacturer Benefits

Biotin is included as an essential vitamin to support skin, coat, and metabolic health in pets, fulfilling nutritional requirements for complete and balanced diets. Its addition also allows manufacturers to highlight the inclusion of key micronutrients on product labelling, appealing to health-conscious consumers.

Vitamin B12
Vitamin B12

Cobalamin, Cyanocobalamin, Hydroxocobalamin, Methylcobalamin

Summary

Vitamin B12 is a water-soluble vitamin of animal origin, essential for nerve function and red blood cell formation in pets. It is primarily included in pet food to support energy metabolism and overall vitality. Vitamin B12 is not used in its natural, raw form but is instead utilised as a specific compound, such as cyanocobalamin, to ensure stability, safety, and optimal absorption.

Manufacturer Benefits

Vitamin B12 is included as an essential nutrient to support metabolic and neurological functions in pets, ensuring the product meets established nutritional standards. Its addition helps manufacturers achieve complete and balanced labelling claims.

Folic Acid
Folic Acid

Pteroylmonoglutamic Acid, Pteroylglutamic Acid, Vitamin B9, E920

Summary

Folic acid is a synthetic form of vitamin B9, originally derived from plant sources but produced for pet food as a stable, bioavailable compound. Its primary purpose is to support cell division, DNA synthesis, and overall growth in pets. Folic acid is not used in its natural state; instead, it is utilised as a manufactured supplement to optimise absorption and efficacy.

Manufacturer Benefits

Folic acid is included as a synthetic vitamin to ensure nutritional adequacy and meet regulatory requirements for B-vitamin content in pet food. Its addition helps standardise nutrient levels across batches, supporting consistent product labelling and animal health.

Vitamin D3
Vitamin D3

Cholecalciferol, Colecalciferol, Calciol, E671

Summary

Vitamin D3, also known as cholecalciferol, is a fat-soluble vitamin of animal origin commonly derived from lanolin or fish oil. It plays a crucial role in regulating calcium and phosphorus metabolism, supporting healthy bone development in pets. Vitamin D3 is not used in its natural form but is instead utilised as a stabilised compound to ensure safety, efficacy, and optimal absorption in pet food formulations.

Manufacturer Benefits

Vitamin D3 is included to ensure the finished product meets established nutritional requirements for canine health, supporting bone development and calcium regulation. Its addition allows manufacturers to guarantee consistent vitamin content regardless of natural variation in raw materials.

Calcium Carbonate
Calcium Carbonate

Chalk, Limestone, E170, Marble Dust

Summary

Calcium carbonate is a naturally occurring mineral compound derived from sources such as limestone or marine shells. It is primarily included in pet food as a source of calcium, essential for healthy bones, teeth, and metabolic functions. Calcium carbonate is not used in its raw mineral state; instead, it is processed into a purified, food-grade compound to optimise safety and bioavailability for pets.

Manufacturer Benefits

Calcium carbonate is included as a cost-effective mineral supplement to provide a bioavailable source of calcium, supporting bone health and proper nutritional balance. It also functions as a pH stabiliser, contributing to product consistency and shelf stability.

Iodised Salt
Iodised Salt

Iodized Salt, Iodate Salt, Iodised Sodium Chloride, Iodised Table Salt

Summary

Iodised salt is a mineral-based ingredient produced by adding iodine, an essential trace element, to refined table salt. Sourced from mineral deposits, its primary purpose is to provide dietary sodium and ensure adequate iodine intake, supporting thyroid function and metabolic health. Iodised salt is not used in its natural raw form; instead, it is utilised as a fortified compound to optimise safety and bioavailability.

Manufacturer Benefits

Iodised salt is included as a cost-effective source of essential sodium and iodine, supporting pet health and meeting nutritional requirements. It also acts as a flavour enhancer to improve palatability.

Taurine
Taurine

2-Aminoethanesulphonic Acid, L-Taurine, E107, 2-Aminoethane-1-Sulphonic Acid

Summary

Taurine is a naturally occurring amino sulfonic acid derived from animal sources, particularly meat and fish. It is added to pet food to support cardiovascular health, vision, and proper immune function, especially in cats who cannot synthesise it sufficiently. Taurine is not used in its raw form; instead, it is incorporated as a purified, synthesised compound to ensure stability, safety, and optimal absorption.

Manufacturer Benefits

Taurine is included to ensure adequate levels of this essential amino acid, particularly in diets where animal protein content may be insufficient to meet canine or feline nutritional requirements. Its addition supports cardiovascular health and is often used to address consumer concerns about diet-associated heart issues.

Magnesium Oxide
Magnesium Oxide

Magnesia, E530, Magnesium(II) Oxide, Calcined Magnesia

Summary

Magnesium oxide is an inorganic compound derived from the mineral magnesium, typically sourced from natural deposits. It is utilised in pet food as a supplemental source of magnesium, an essential mineral that supports nerve, muscle, and bone health. Rather than its raw metallic form, magnesium is provided as magnesium oxide to optimise safety, stability, and bioavailability for pets.

Manufacturer Benefits

Magnesium oxide is included as a cost-effective mineral supplement to ensure adequate magnesium levels in the diet, supporting essential metabolic functions. Its use allows manufacturers to meet nutritional requirements efficiently without significantly impacting product cost or palatability.

Ferrous Sulphate
Ferrous Sulphate

Iron(II) Sulphate, Ferrous Iron Sulphate, E172, Green Vitriol

Summary

Ferrous sulphate is an inorganic compound derived from iron, an essential mineral for animal health. It is primarily included in pet food to support normal red blood cell formation and prevent iron deficiency anaemia. Ferrous sulphate is not used in its natural metallic state; instead, it is utilised as a salt to optimise safety, stability, and absorption within the animal’s body.

Manufacturer Benefits

Ferrous sulphate is included as a cost-effective source of dietary iron to meet nutritional requirements in pet food formulations. It helps ensure the product delivers essential minerals for pet health while maintaining compliance with labelling standards.

Zinc Oxide
Zinc Oxide

Zinc White, CI 77947, Calamine, Chinese White

Summary

Zinc oxide is an inorganic compound derived from the mineral zinc, commonly used in pet food as a supplemental source of the essential trace mineral zinc. Its primary benefit is to support immune function, skin health, and enzyme activity. Zinc is not used in its natural metallic state; instead, it is utilised as zinc oxide to optimise safety, stability, and bioavailability in pet nutrition.

Manufacturer Benefits

Zinc oxide is included as a cost-effective and stable source of essential zinc, supporting nutritional adequacy in pet food formulations. Its use ensures compliance with regulatory requirements for trace minerals while maintaining product shelf stability.

Copper Sulphate
Copper Sulphate

Cupric Sulphate, Blue Vitriol, Roman Vitriol, E519

Summary

Copper sulphate is an inorganic compound derived from copper, an essential trace mineral. It is primarily included in pet food to support vital physiological functions such as enzyme activity, immune health, and connective tissue formation. Copper sulphate is not used in its natural metallic state; instead, it is utilised as a salt to optimise safety, stability, and bioavailability for animal nutrition.

Manufacturer Benefits

Copper sulphate is included as a cost-effective and reliable source of essential copper, a trace mineral necessary for canine health. Its use ensures precise nutrient formulation and supports compliance with nutritional labelling standards.

Manganous Oxide
Manganous Oxide

Manganese(II) Oxide, Manganese Monoxide, E172, Manganese Oxide

Summary

Manganous oxide is an inorganic compound derived from the mineral form of manganese, an essential trace element. It is included in pet food primarily as a source of manganese, which supports bone development, metabolism, and antioxidant function. Manganous oxide is not used in its natural metallic state; instead, it is utilised as a safe, bioavailable compound to optimise absorption and nutritional benefit.

Manufacturer Benefits

Manganous oxide is included as a cost-effective source of manganese, an essential trace mineral that supports metabolic and skeletal functions in pets. Its stable form allows for consistent nutrient delivery throughout the product’s shelf life.

Calcium Iodate
Calcium Iodate

Calcium Diiodate, E917, Ca(IO3)2, Calcium Iodate Anhydrous

Summary

Calcium iodate is a mineral-derived compound commonly included in pet foods as a source of iodine, an essential trace element. It is not used in its natural, raw mineral state; instead, it is utilised in the form of a stable, food-grade compound to ensure safety and optimal absorption. Its primary purpose is to support healthy thyroid function and metabolic processes.

Manufacturer Benefits

Calcium iodate is included as a stable, bioavailable source of iodine to support thyroid function and overall metabolic health in pets. Its use ensures consistent iodine content throughout the product, optimising nutritional labelling and regulatory compliance.

Sodium Selenite
Sodium Selenite

Disodium Selenite, E901, Selenious Acid Disodium Salt, Disodium Selenious Acid

Summary

Sodium selenite is an inorganic compound derived from selenium, an essential trace mineral. It is included in pet food formulations to provide a bioavailable source of selenium, which supports antioxidant defence and immune function. Sodium selenite is not used in its natural elemental form; instead, it is utilised as a salt compound to ensure safety, stability, and optimal absorption in pets.

Manufacturer Benefits

Sodium selenite is included as a cost-effective and stable source of the essential trace mineral selenium, which supports normal metabolic and immune functions in pets. Its use allows manufacturers to meet nutritional requirements efficiently and with consistent quality.

Tryptophan
Tryptophan

L-Tryptophan, L-α-Aminoindole-3-Propionic Acid, 2-Amino-3-(Indol-3-yl)Propanoic Acid, EAA 10

Summary

Tryptophan is an essential amino acid derived from animal or plant protein sources. It plays a crucial role in pet nutrition by supporting protein synthesis and serving as a precursor for serotonin, which influences mood and behaviour. Tryptophan is not used in its isolated, natural form but is instead incorporated as a purified amino acid to optimise dietary balance and bioavailability in pet food formulations.

Manufacturer Benefits

Tryptophan is included as an essential amino acid to support complete and balanced nutrition, meeting regulatory requirements for canine dietary adequacy. Its addition ensures the product can be marketed as providing all necessary amino acids for dogs’ health.

Mixed Tocopherols
Mixed Tocopherols

Tocopherols, E306, Natural Tocopherols Concentrate, D-Alpha Tocopherol Concentrate

Summary

Mixed tocopherols are a blend of compounds derived from plant oils, primarily functioning as a source of vitamin E. Their main purpose in pet food is to act as natural antioxidants, helping to preserve the freshness of fats and oils. Rather than being used in their isolated, pure form, mixed tocopherols are incorporated as stabilised extracts to optimise safety, efficacy, and nutrient retention.

Manufacturer Benefits

Mixed tocopherols are included as a natural preservative to extend shelf life by slowing the oxidation of fats and oils in pet food. They are often used as a label-friendly alternative to synthetic preservatives to appeal to consumer preferences for natural ingredients.

Natural Flavour
Natural Flavour

Natural Flavouring, Flavouring Substance, Flavouring Preparation, Flavouring Complex

Summary

Natural flavour is a food additive derived from animal or plant sources, designed to enhance the palatability of pet food. Its primary purpose is to improve taste and encourage consistent consumption. Rather than being used in its original raw form, natural flavour is typically processed and concentrated to ensure safety, stability, and uniformity in pet food formulations, while maintaining its natural origin.

Manufacturer Benefits

Natural flavour is included to enhance palatability, encouraging pets to consume the product. It also allows manufacturers to improve taste without specifying individual flavouring agents, supporting flexible formulation and label-friendly marketing.

Carnitine
Carnitine

L-Carnitine, Levocarnitine, Vitamin Bt, E306

Summary

Carnitine is a naturally occurring compound derived from animal sources, primarily meat and fish. It plays a crucial role in energy metabolism by transporting fatty acids into the mitochondria for cellular energy production. In pet food, carnitine is utilised in a synthesised, bioavailable form rather than its raw state, ensuring optimal absorption and safety for companion animals.

Manufacturer Benefits

Carnitine is included as a functional ingredient to support fat metabolism and energy production, particularly in formulas targeting active or senior pets. Its addition allows manufacturers to market the product as supporting heart health and weight management.

Beta Carotene
Beta Carotene

Provitamin A, E160a, All-Trans-Beta-Carotene, CI 40800

Summary

Beta carotene is a plant-derived pigment and precursor to vitamin A, commonly sourced from carrots and other colourful vegetables. Its primary nutritional benefit is supporting vision, immune function, and antioxidant defence. In pet food, beta carotene is utilised in its extracted or purified form rather than as whole vegetables, ensuring consistent potency and bioavailability for optimal health outcomes.

Manufacturer Benefits

Beta carotene is included as a natural source of vitamin A and as a colour-enhancing agent to improve the visual appeal of the product. Its presence also allows for label-friendly marketing, appealing to consumers seeking natural additives.

Score Card

Every product is assessed using the Dog Directory Integrity Framework, giving dog owners a clear and trustworthy way to compare products. This ensures each review reflects overall quality and formulation integrity, not just marketing claims.

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  • Overall Score
    Score Info

    As a pet owner, you naturally want the best for your dog. From regular vet visits to nutritious meals, ensuring your furry friend is healthy and happy is always top of mind. But beyond food and exercise, supplements are becoming an increasingly popular way to support your dog’s overall well-being. In this comprehensive guide, we’ll dive into the world of dog supplements, explaining what they are, why they matter, and how to choose the right ones for your pup.

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ABOUT


Parent Company
Colgate Palmolive
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Manufactured
United States
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Category
Food
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Life Stage
Adult, Senior
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Breed Size
All Breeds
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Feeding Type
Complete Meal
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Processing Level
High
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PRODUCT TAGS


Single Protein
Gluten Free
Dairy Free

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Price Comparison

7.9kg

About the Brand

Hills Prescription Diet

Hill's Prescription Diet is a veterinary-therapeutic food line from Hill's Pet Nutrition, originating in 1948. Formulas are designed to nutritionally manage specific clinical conditions such as kidney disease, allergies, and diabetes.


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Built for owners who want cheaper products, better weekends and quality recommendations!

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