HA Hydrolyzed Dry Dog Food

Overview
Purina Pro Plan Veterinary Diets HA Hydrolyzed Dry Dog Food is an extruded dry kibble formulated for dogs with adverse food reactions, including confirmed or suspected food allergies and food intolerances. The formula uses hydrolysed soy protein isolate — protein enzymatically broken down into smaller peptide fragments — as the sole protein source, alongside corn starch as the single carbohydrate source. This limited, hydrolysed profile reduces the likelihood of an immune-mediated dietary response.
The vegetarian formulation makes it appropriate for dogs with confirmed sensitivities across multiple animal protein sources. Coconut oil provides medium-chain triglycerides, and the formula includes antioxidants for immune support. It is suitable for all life stages and breed sizes. This diet is not appropriate as a general-purpose food for healthy dogs without a diagnosed food sensitivity. Speak with your veterinarian before introducing this food.
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.
Ingredients
Corn Starch, Hydrolysed Soy Protein Isolate, Coconut Oil, Partially Hydrogenated Canola Oil Preserved With TBHQ, Powdered Cellulose, Tricalcium Phosphate, Dicalcium Phosphate, Corn Oil, Potassium Chloride, Guar Gum, Salt, Choline Chloride, Magnesium Oxide, DL-Methionine, Taurine, Zinc Sulfate, Vitamin E Supplement, Ferrous Sulfate, Manganese Sulfate, Niacin, Copper Sulfate, Vitamin A Supplement, Calcium Pantothenate, Thiamine Mononitrate, Riboflavin Supplement, Vitamin B12 Supplement, Garlic Oil, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement, Calcium Iodate, Biotin, Menadione Sodium Bisulfite Complex, Sodium Selenite.

Maize Starch, Zea Mays Starch, E1401, Maizena
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.
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 Soybean Protein, Hydrolysed Glycine Max Protein, Hydrolysed Soy Protein Concentrate
Hydrolysed soy protein isolate is a plant-derived ingredient produced by breaking down soy protein into smaller peptides and amino acids. It is primarily included in pet food for its highly digestible protein content, supporting muscle maintenance and overall health. Rather than using whole soybeans, the protein is isolated and hydrolysed to enhance absorption and reduce allergenic potential in sensitive pets.
Hydrolysed soy protein isolate is included as a highly digestible, concentrated protein source that can help meet nutritional requirements while being cost-effective compared to animal proteins. Its hydrolysed form also reduces allergenic potential, making it suitable for hypoallergenic or sensitive diet formulations.

Cocos Nucifera Oil, Copra Oil, E472c, Coconut Fat
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.
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.

Hydrogenated Rapeseed Oil, Partially Hydrogenated Canola Oil, Partially Hydrogenated Rapeseed Oil, E Hydrogenated Rapeseed Oil
Hydrogenated canola oil is a plant-derived fat obtained by adding hydrogen to canola oil, altering its structure to increase stability and shelf life. It is primarily used as an energy source and to enhance texture in pet foods. Rather than its natural liquid form, canola oil is utilised in a hydrogenated, solidified state to improve product consistency and oxidative stability.
Hydrogenated canola oil is included as a cost-effective fat source that enhances product texture and extends shelf life by improving oxidative stability. Its use also helps maintain consistent product quality and palatability.

Tertiary Butylhydroquinone, E319, Tert-Butylhydroquinone, 2-(1,1-Dimethylethyl)-1,4-Benzenediol
TBHQ, or tertiary butylhydroquinone, is a synthetic antioxidant derived from petroleum sources. It is primarily added to pet foods to preserve fats and oils, thereby extending shelf life and preventing rancidity. TBHQ is not used in its raw chemical form but is specifically manufactured for food use to ensure safety and efficacy in stabilising products against oxidative spoilage.
TBHQ is included as a synthetic antioxidant to extend the shelf life of pet food by preventing the oxidation of fats and oils. Its use helps maintain product stability and freshness during storage and distribution.

Microcrystalline Cellulose, Powdered Cellulose, E460, Cellulosum
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.
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.

Calcium Phosphate Tribasic, E341(iii), Tribasic Calcium Phosphate, TCP
Tricalcium phosphate is a mineral compound derived from calcium and phosphorus, commonly sourced from inorganic origins. It is primarily included in pet food to provide essential calcium and phosphorus, supporting healthy bones and teeth. Tricalcium phosphate is not used in its natural, raw mineral state; instead, it is utilised as a purified compound to optimise safety, bioavailability, and nutritional efficacy in pet diets.
Tricalcium phosphate is included as a cost-effective mineral supplement to provide calcium and phosphorus, supporting nutritional balance in pet food formulations. It also functions as an anti-caking agent, improving product texture and manufacturing efficiency.

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

Maize Oil, Zea Mays Oil, E927b, Zea Mays Seed Oil
Corn oil is a plant-derived oil extracted from the germ of maize (corn) kernels. It serves primarily as a source of energy and essential fatty acids, supporting skin and coat health in pets. In pet food, corn oil is used in its refined, natural form, ensuring safety and optimal absorption of its beneficial lipids and fat-soluble vitamins.
Corn oil is included as a cost-effective fat source to provide essential fatty acids and enhance the energy content of the pet food. It also improves palatability, making the product more appealing to pets.

E508, Muriate of Potash, Potassium Monochloride, KCl
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.
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.

Cyamopsis Tetragonoloba Gum, E412, Guaran, Guar Flour
Guar gum is a natural polysaccharide derived from the seeds of the guar plant (Cyamopsis tetragonoloba), a legume native to India and Pakistan. It is primarily used as a thickening and stabilising agent in pet food, helping to improve texture and moisture retention. Guar gum is utilised in its processed powder form, not as whole seeds, to ensure optimal functionality and digestibility.
Guar gum is included as a cost-effective thickening and stabilising agent to improve the texture and consistency of pet food products. It also helps maintain product uniformity during storage and extends shelf life.

Sodium Chloride, NaCl, Table Salt, E535
Salt is a mineral ingredient derived from the combination of sodium and chloride, typically sourced from natural deposits or seawater. It is primarily included in pet food to support electrolyte balance, nerve function, and hydration. Salt is not used in its raw mineral form but is utilised as sodium chloride, a purified compound, to ensure safety, palatability, and optimal absorption in pets.
Salt is included as a palatability enhancer to improve taste and encourage consumption, and also functions as a preservative to help extend product shelf life. Its use allows manufacturers to optimise flavour while maintaining product stability.

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

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

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

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

Zinc Sulphate Monohydrate, Zinc Sulphate Heptahydrate, E6, ZnSO₄
Zinc sulphate is a mineral compound derived from the element zinc, typically sourced from mined zinc ores. It is utilised in pet food as a supplemental source of zinc, an essential trace mineral that supports immune function, skin health, and enzyme activity. Zinc is not used in its natural metallic state; instead, it is provided as zinc sulphate to optimise safety and bioavailability for pets.
Zinc sulphate is included as a cost-effective and bioavailable source of the essential mineral zinc, which supports immune function and skin health in pets. Its addition ensures the product meets nutritional requirements for complete and balanced pet food labelling.

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

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

Manganese(II) Sulphate, Manganous Sulphate, Epsomite (Manganese), Sulphuric Acid Manganese(2+) Salt
Manganese sulphate is an inorganic compound derived from the mineral manganese, typically sourced from mined ores. It is included in pet food as an essential trace mineral to support bone development, enzyme function, and metabolic processes. Rather than using raw metallic manganese, the sulphate form is utilised to ensure safety, stability, and optimal absorption in companion animals’ diets.
Manganese sulphate is included as a cost-effective source of the essential trace mineral manganese, which supports metabolic and skeletal health in pets. Its addition ensures nutritional adequacy and compliance with regulatory labelling requirements for complete and balanced pet foods.

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

Cupric Sulphate, Blue Vitriol, Roman Vitriol, E519
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.
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.

Retinol, Retinyl Palmitate, Retinyl Acetate, E160a
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.
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.

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

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

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

Cobalamin, Cyanocobalamin, Hydroxocobalamin, Methylcobalamin
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.
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.

Allium Sativum Oil, Garlic Essential Oil, Allium Sativum Essential Oil, Oleum Allii Sativi
Garlic oil is an extract derived from the bulbs of the garlic plant (Allium sativum), a member of the Allium family. It is primarily included in pet food for its natural antioxidant properties and potential to support immune health. Rather than using whole garlic, garlic oil is utilised in a concentrated, oil-based form to optimise efficacy and control dosage for safety.
Garlic oil is included as a natural flavouring agent to enhance palatability and appeal to pet owners seeking recognisable, label-friendly ingredients. Its use is primarily for marketing purposes, as it provides minimal nutritional benefit to dogs.

Vitamin B6, E300, Pyridoxine HCl, Pyridoxine Monohydrochloride
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.
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.

Pteroylmonoglutamic Acid, Pteroylglutamic Acid, Vitamin B9, E920
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.
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.

Cholecalciferol, Colecalciferol, Calciol, E671
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.
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 Diiodate, E917, Ca(IO3)2, Calcium Iodate Anhydrous
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.
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.

Vitamin B7, Vitamin H, D-Biotin, Coenzyme R
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.
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 K3, Menadione Sodium Bisulphite, MSBC, E223
Menadione Sodium Bisulphite Complex is a synthetic compound derived from vitamin K, specifically used as a source of vitamin K3 in pet foods. Its primary purpose is to support normal blood clotting and bone health. Unlike natural vitamin K found in plants or animal tissues, this ingredient is not used in its raw form but is utilised as a stable, water-soluble compound to optimise absorption and safety.
Menadione Sodium Bisulphite Complex is included as a cost-effective, stable source of synthetic vitamin K to ensure consistent nutrient levels in the final product. Its use helps manufacturers meet nutritional requirements without relying on less stable or more expensive natural alternatives.

Disodium Selenite, E901, Selenious Acid Disodium Salt, Disodium Selenious Acid
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.
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.
Score Card
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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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Pro Plan Veterinary Diet
Purina Pro Plan Veterinary Diet offers scientifically formulated therapeutic meals and supplements to help manage complex health conditions in dogs. Discover their targeted range of vet recommended nutrition designed to support your pet's specific medical requirements and long term wellness.
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