Canine Hydrolyzed Protein PS Dry Dog Food
Verified Jun 20, 2026
This is a veterinary prescription dry diet for adult dogs with food sensitivities that need a hydrolyzed-protein formula. It uses hydrolyzed soy as the protein source with potato as the main carbohydrate, plus added omega-3s and antioxidants. The recipe is designed to be complete and balanced for adult maintenance while helping to reduce the risk of reactions to intact food proteins.
Nutritionally, this is a well-designed therapeutic diet for adult dogs who need a hydrolyzed protein formula because of suspected or known food allergies or sensitivities. The use of hydrolyzed soy protein and potato provides highly digestible nutrients while minimizing exposure to intact animal proteins, and the diet is fully AAFCO-compliant for adult maintenance. It’s best suited for dogs under veterinary care for skin or gastrointestinal issues where a hydrolyzed diet has been recommended.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
KibbleLab may earn an affiliate commission when you buy through a link. No one can pay for a higher score, or to change what we recommend for your pet.
At a Glance
KibbleLab Review
Strengths
- Hydrolyzed soy protein is the main protein source, which can greatly reduce the likelihood of triggering food-allergic reactions compared with intact proteins.
- Potato and potato protein provide a simple, easily digestible carbohydrate and additional amino acids, useful in sensitive dogs.
- Complete and balanced to AAFCO standards for adult maintenance, so it can be used as a sole diet for adult dogs when prescribed.
- Includes fish oil and a defined omega-3 level plus added antioxidants (vitamin E, vitamin C, marigold extract) to support skin, coat, and overall health in sensitive dogs.
Considerations
- Protein and fat levels (19% and 10% as-fed) are a bit lower than many standard adult dog foods, which may not be ideal for very active or working dogs unless portions are carefully adjusted.
- Soy is a common allergen for some dogs; while hydrolyzation greatly reduces reactivity, a small number of dogs with severe soy sensitivity may still not tolerate it.
- This is formulated for adult maintenance only and is not appropriate for growing puppies or pregnant/lactating dogs.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Potato
Potato is commonly used in pet foods as a digestible carbohydrate source and functional binder, supplying starch, fiber, and modest amounts of vitamins (B6, C) and potassium—often included as cooked or dehydrated flakes, starch, or protein concentrates. While it provides energy and helps formulate grain‑free recipes, potatoes are not a primary protein for dogs or cats (and are not nutritionally required for obligate‑carnivore cats), can contribute to excess calories or affect blood glucose in diabetic animals, and must be cooked and free of green skins or sprouts to avoid solanine toxicity; allergies are uncommon but possible.
02
Hydrolyzed Soy Protein
Hydrolyzed soy protein is a processed plant protein broken into small peptides and amino acids and is used in pet foods as a digestible protein source and flavor enhancer, often in hypoallergenic or limited‑ingredient formulations. It can improve digestibility and may reduce allergic reactions for some animals, but it may still trigger soy‑sensitive pets, does not supply certain nutrients cats need from animal proteins (e.g., taurine), and formulations should be evaluated for added sodium or flavoring compounds.
03
Coconut Oil
Coconut oil is used as a concentrated fat source and palatability enhancer in dog and cat diets, providing medium-chain triglycerides (notably lauric acid) that can be rapidly metabolized for energy and may help support skin and coat condition. Because it is high in saturated fat and calories, coconut oil should be used sparingly and introduced gradually to avoid gastrointestinal upset, and pets with obesity or a history of pancreatitis should only use it under veterinary guidance.
04
Potato Protein
Potato protein is a concentrated plant-based protein used in pet foods as a protein source, binder and texture enhancer, offering a highly digestible amino acid profile with relatively good lysine content compared with other plant proteins. It can be a useful hypoallergenic alternative for dogs and a supplement in balanced formulas, but it should not be the sole protein for obligate carnivores like cats because it lacks certain nutrients (e.g., sufficient taurine and other animal-derived factors) and must be used within complete, nutritionally formulated diets; quality processing also minimizes potato-specific compounds such as glycoalkaloids.
05
Natural Flavor
Natural flavor is used primarily as a palatability enhancer in pet foods to improve taste and aroma and is not intended to provide significant nutrients, typically coming from concentrated extracts of meat, poultry, plant, or fermentation sources. While it can increase acceptance in picky dogs and cats, manufacturers are not required to disclose specific sources so pets with known sensitivities or allergies may react, and presence of natural flavor should not be taken as a guarantee of overall product quality.
Nutritional Breakdown
How to read As Fed versus Dry Matter
As fed shows the numbers straight off the label, water included. Dry matter removes the water so you can compare a wet food and a dry food fairly.What is calorie density
How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.Product Details & Brand
Product Specs
AAFCO Nutritional Adequacy
What is AAFCO
Association of American Feed Control Officials. It sets the nutritional
adequacy standards US pet foods are measured against.
What is AAFCO
Association of American Feed Control Officials. It sets the nutritional adequacy standards US pet foods are measured against.Brand
Royal Canin is a premium pet food brand offering highly specific diets tailored to different breeds, life stages, sizes, and health conditions of dogs and cats. The brand is known for its science-driven approach and collaboration with veterinarians and pet professionals.
Visit Royal CaninWSAVA publishes criteria for evaluating a manufacturer (qualified nutritionists, feeding trials, published research); it does not certify or endorse brands.
Manufacturer
Royal Canin operates manufacturing facilities globally with strict quality control processes and adheres to ISO certification standards. The company maintains full traceability of ingredients, follows HACCP principles, and complies with local and international pet food safety regulations including EU and FDA requirements.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Royal Canin Canine Hydrolyzed Protein PS Dry Dog Food has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
Sign up for the full picture
Feeding Calculator
Personalized portion sizes based on your pet's weight, age, and activity level.
Get startedSimilar Foods
Post your dog's report card and challenge friends to check their food.
Frequently Asked Questions
Has Royal Canin ever been recalled?
We have no recalls on record for Royal Canin. We monitor the FDA Pet Food Recall Database daily.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall database. Last verified dates reflect our most recent data check.
Continue with Google
Continue with Facebook