Royal Canin Veterinary Diet Hypoallergenic Hydrolyzed Protein HP Dry Cat Food

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7.7-lb bag
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  • 17.6-lb bag
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Royal Canin Veterinary Diet Hypoallergenic Hydrolyzed Protein Adult HP Dry Cat Food is a tasty, highly digestible, hydrolyzed soy protein isolate diet that manages adverse reactions to food. Provide a complete and balanced meal for your cat, without ingredients that will cause harmful allergic reactions. This healthy hypoallergenic food is specially formulated for adult cats. In combination with your veterinarian’s allergy treatment plan, Royal Canin Veterinary Diet Hypoallergenic Hydrolyzed Protein Adult HP Dry Cat Food will control those feline allergies!

Key Benefits

  • Feline Hydrolyzed Protein Adult HP is a highly palatable, highly digestible, complete and balanced hydrolyzed protein diet.
  • Hydrolyzed soy protein, composed of low molecular weight peptides, is highly digestible and supports gastrointestinal and dermatological health.
  • Features a specific nutrient blend to help regulate intestinal transit and to help support the digestive flora
  • Royal Canin Urinary S/O Index® promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals
  • This diet is specifically formulated for use as short-term elimination feeding and as long-term nutrition for cats with food sensitivities

Note: Royal Canin Veterinary Diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to

See all items by Royal Canin Veterinary Diet

  • Item Number
  • Brand
    Royal Canin
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Sensitive Digestion, Prescription Food

Nutritional Info


  1. Brewers Rice, Hydrolyzed Soy Protein, Chicken Fat, Natural Flavors, Powdered Cellulose, Dried Plain Beet Pulp, Monocalcium Phosphate, Fish Oil, Potassium Chloride, Calcium Sulfate, Calcium Carbonate, Vegetable Oil, Sodium Silico Aluminate, Fructooligosaccharides, Taurine, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), Inositol, Niacin Supplement, L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), D-Calcium Pantothenate, Biotin, Pyridoxine Hydrochloride (Vitamin B6), Riboflavin Supplement, Thiamine Mononitrate (Vitamin B1), Vitamin A Acetate, Folic Acid, Vitamin B12 Supplement, Vitamin D3 Supplement], Choline Chloride, Dl-Methionine, Marigold Extract (Tagetes Erecta L.), Trace Minerals [Zinc Proteinate, Zinc Oxide, Ferrous Sulfate, Manganese Proteinate, Copper Proteinate, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite], Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

  1. 3,909 kcal/kg, 328 kcal/cup
Guaranteed Analysis
Crude Protein 23.0% min
Crude Fat 18.0% min
Crude Fiber 5.6% max
Moisture 8.0% max
Eicosapentaenoic Acid (EPA) 0.18% min
Docosahexaenoic Acid (DHA) 0.08% min

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Customer Reviews

Royal Canin Veterinary Diet Hypoallergenic Hydrolyzed Protein HP Dry Cat Food is rated 4.7 out of 5 by 145.
Rated 5 out of 5 by from They love it!!!!!!! Jack had an open sore under his chin that would not heal up, even after a steroid shot. Finally it healed up, only to come back again. It itched him fiercely. So Dr Keller prescribed this hydrolyzed protein food. (Ouch! What a price!! But I figure it's cheaper than continuous vet visits.) We have three cats and I was afraid one or all would not like it. But I took away the other food and put this down (without a gradual mix from one food to the other) and they gobbled it right up. We leave the food out all day and let them eat throughout the day as they wish. They don't go through this food any quicker than they did their Hills Science Diet food. And I'm hoping maybe they won't need as much of it. Oh, and a nice side benefit is that Jack was a barfer, but not once has he urped since changing food!!
Date published: 2017-02-20
Rated 5 out of 5 by from Special Needs Kitty WSU in Pullman, Washington recommended this to my Vet, Frankie (kitty) she was having terrible soft pooping problems. Thank goodness for tile floors... She has been on special foods for several years now and never had problems then all of sudden Problems... so after a year of cleaning up behind her we tried this diet and within a week her stool firmed up. She is now about to try the soft food too since she has no colon and her system does not create enough water for her stool. I found her starving 10 years ago, her tail and hip broken. Its been very challenging for her system has changed over the years but she is a sweetheart. The only negative is the price hope Royal Canin gives out coupons once in a while to help with the high cost, I am in my 60's and would like to retire... Just a note when a few years ago a lot of the foods had pets sick and dying from an ingredient they purchased from China, I was feeding Royal Canin and they were one of the few manufacturers who did not buy from China. High quality all the way.
Date published: 2013-01-23
Rated 5 out of 5 by from The Royal Canin Hypoallergenic, hydrolyzed protein dry food, is the only thing that is keeping my cat healthy. My one cat has very severe food allergies so this food and the Purina Proplan probiotics, are working great for him. He's gained most of his weight back, and isnt throwing up hardly at all anymore. It's hard finding these 2 products at regular pet food places, or only my vet and you so far carry them. Except my vet charges way more for both of them. Thanks Chewy for carrying these two great products our cat truly needs, at a decent price, great delivery time, and so easy to order it too. My cat is doing so much better now. Thank you again for making a great difference in my cat's health.
Date published: 2017-02-25
Rated 5 out of 5 by from Great Value My cat needs to have the Royal Canin Adult HP. I had a few questions about the auto ship service. I called the customer service and the representative was so helpful. He sent two bags out to me and set me up for the auto delivery. I will now get a bag of food and a half pound bag of treats with each shipment and it will be $17 less than what I was paying for just the food at my vet. The bags of food that I had ordered were alos delivered within 2 days. GREAT SERVICE AND VALUE
Date published: 2017-02-05
Rated 5 out of 5 by from Stopped Barfing! (knock on wood) My cat has barfed from the time he was a kitten. He is now 8 years old. He barfed almost daily. After numerous visits to the vet and over $1100 in charges to run tests that showed he was perfectly healthy I was at my wits end. I had tried going grain free, limiting his feeding, special dishes to slow down his eating, etc. and the barfing continued. On this last visit the vet prescribed this food (yes it needs a prescription from the vet) as a last-ditch "let's try this and see" attempt to help him. I mixed it 1/2 and 1/2 with the Fromm food I was currently feeding at the time in order to transition him over to the new food and the barfing immediately stopped. My intention was to transition to just this food (as the vet recommended) but the cat seems to be doing fine on the 1/2 and 1/2 mixture. Due to the cost of this, as long as he keeps doing well I will just leave this mixture alone. So far it has been almost 4 weeks and he vomited once and it was just hair. No food came back up. He likes this food. I have 2 other indoor only cats who eat from the same bowl. They all seem happy with it. Definitely worth trying if you have a cat with a chronic vomit problem. I just hope it continues doing such a great job for us.
Date published: 2016-10-17
Rated 5 out of 5 by from Very glad we made the switch We switched to Hydralized Protein after our two ragdoll cats seemed to throw up every other day. We took them in and our vet recommended this replacement food. And while it took a few weeks for them to adjust, it's been great. The food is fairly expensive but they eat a lot less than the cheaper brands. Their health has also greatly improved and they really love the food. It's worth the switch if you're on the fence! And thanks to Chewy, auto-shipping is a breeze!
Date published: 2017-02-16
Rated 5 out of 5 by from great results for my 2 babies my male cat had problems with food vet had me start them both on this about a year ago and the change has been great
Date published: 2017-01-26
Rated 5 out of 5 by from Great dry hydrolized Protein food for IBS He liked this immediately and I give some with each feeding of Z/D wet food. Small feedings 4 times a day has helped his IBS.
Date published: 2017-03-04
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