Helps reduce skin and GI reactions that may be a result of sensitivities to common proteins found in pet foods

Helps minimize risk of reaction with proteins that are broken down to a size that’s less likely to be recognized by the immune system

Reinforces the skin barrier with essential nutrients to support healthy skin in cats with skin sensitivity and irritation

Helps support healthy digestion with an exclusive blend of fibers and prebiotics

Whether a veterinarian has determined through an elimination diet trial that your cat has food sensitivities or that she requires long-term support for her skin and GI issues, your vet recommended Royal Canin Hydrolyzed Protein Adult HP for a reason. This highly palatable diet is designed for adult cats. It’s formulated with hydrolyzed soy proteins, composed of low molecular weight peptides, so they can be absorbed in the digestive tract with a reduced risk of triggering an immune reaction. Optimal amounts of B vitamins and amino acids reinforce your cat’s skin barrier. Omega-3 fatty acids EPA and DHA help promote healthy skin and coat. An exclusive blend of fibers helps support healthy digestion in cats prone to digestive upsets, including diarrhea. And with strict manufacturing procedures to help avoid cross contamination, you can confidently feed Royal Canin Hydrolyzed Protein Adult HP long-term to cats with food sensitivities.

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Discover our tool that calculates the daily portion for your pet. Fill in your pet's information and you will get their daily feeding recommendation. In case of weight issues, do not hesitate to consult your vet to adapt this portion. Note that this feeding recommendation is more precise than the feeding table, therefore the values may slightly differ.


Brewers rice, hydrolyzed soy protein, chicken fat, powdered cellulose, natural flavors, dried plain beet pulp, calcium sulfate, fish oil, potassium chloride, monocalcium phosphate, vegetable oil, DL-methionine, sodium pyrophosphate, sodium silico aluminate, salt, fructooligosaccharides, choline chloride, taurine, calcium carbonate, vitamins [DL-alpha tocopherol acetate (source of vitamin E), 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, vitamin B12 supplement, folic acid], trace minerals [zinc proteinate, zinc oxide, manganese proteinate, manganous oxide, copper sulfate, ferrous sulfate, sodium selenite, copper proteinate, calcium iodate], marigold extract (Tagetes erecta L.), magnesium oxide, rosemary extract, preserved with mixed tocopherols and citric acid.

Calorie Content

This diet contains 3940 kilocalories of metabolizable energy (ME) per kilogram or 351 kilocalories ME per cup on an as fed basis (calculated).

Nutrient Amount
Crude Protein (min)24.0%
Crude Fat (min)18.0%
Crude Fiber (max)5.7%
Moisture (max)8.0%
Eicosapentaenoic + Docosahexaenoic acid (EPA + DHA) (min)0.19%
Omega-3 fatty acids* (min)0.45%.

*Not recognized as an essential nutrient by the AAFCO Cat Food Nutrient Profiles.

Weight Low Activity Medium Activity High Activity
3 lb (1.5 kg) - 3/8 cup (26 g) 3/8 cup (31 g)
4 lb (2 kg) - 3/8 cup (31 g) 1/2 cup (38 g)
6 lb (2.5 kg) - 1/2 cup (37 g) 1/2 cup (44 g)
7 lb (3 kg) - 1/2 cup (42 g) 5/8 cup (50 g)
8 lb (3.5 kg) - 1/2 cup (47 g) 5/8 cup (56 g)
9 lb (4 kg) - 5/8 cup (51 g) 3/4 cup (62 g)
10 lb (4.5 kg) - 5/8 cup (56 g) 3/4 cup (67 g)
11 lb (5 kg) 5/8 cup (48 g) 3/4 cup (60 g) 7/8 cup (72 g)
12 lb (5.5 kg) 5/8 cup (52 g) 3/4 cup (65 g) 7/8 cup (77 g)
Hydrolyzed Protein HP Dry Cat Food

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Customer reviews

26 Oct 2022

Cats Are Carnivores

Cats are obligate carnivores, yet the 1st ingredient is brewers rice. Cats are meant to eat meat, not carbohydrates.
01 Jun 2022

Solved Diarrhea Issue

This is the only food that my cat can digest and does not lead to diarrhea. I wish there was a wet food option for cats as well.
01 Jun 2022

Cat food

Bought this cat food many times. Our cat loves it.
01 Jun 2022

Perfect For My Kitties

It has helped keep all of my cat’s IBD, skin sensitivities, and Stomatitis flare ups to a minimum.
31 May 2022

Healthy cat

The cat for which I was buying this hypoallergenic dry cat food lived 20 years.
31 May 2022

Caused so many problems rather than fixing them

Caused my cat to need emergency cystotomy surgery to remove crystals the size a human would have. Was told by Royal Canin that "there's no guarantee the SO Index will prevent crystals". That answer is entirely unacceptable and says it all about the company.
31 May 2022

Saved my kitty

I adopted a cat full of open sores that the vet couldn’t fix. She was on antibiotics and creams. Turns out she was allergic to regular cat food and scratching open her skin. This food changed her life! She’s no longer in pain, she’s living happy and healthy. Just wish it was a little less expensive!
18 Oct 2021

Protein rash is back!

My cat is allergic to protein. She ate this for year's. The last three bags has left her with rashes. I asked the vet if they switched the formula. I was told no. Today, I'm researching renal food for my other girl. So, I decided to research Sunami's food, read all this crap and oh my goodness....we were about to book her in to the vets for blood work, as we could not figure out the rash problem. The rash is only present when she gets protein in her system. I emailed RC months ago regarding their negligence- they left my city and surrounding towns dry of this food. RC did not respond. Typical. Reading all this just infuriates me. All these formula changes RC does. I think I'm better off to check out Hills or even Purinas Vet line.
12 Sep 2021

Please go back to original formula.

My cat used to love this food, but ever since we opened the most recent bags after noticing the change of the bag and then noticed she has done a complete 180. Instead of running over to her bowl and eating her food, she now avoids it until she is hungry. We attempted adding warm water and she licks all the water off. I suspect it's due to the formulation change everyone else is mentioning. Something definitely changed, which is a shame given how limited the options already are for HP cat food. Like other cats, her issues with vomitting and her stool which had gotten better on this food is now worse. We will have to find something else.
Gia Mina Miao Miao
12 Aug 2021

Formula Change

We went through several RX foods and this one is the only one our cat could tolerate. Opened new bag and she will not eat it unless she is starving. Even then, she only eats a tiny bit. Very disappointing.