Helping cats and dogs live their healthiest lives.
Sacred Birman kitten stood next to an adult Yorskhire Terrier in black and white.
Vet Products

Formula and production process dedicated to quality and food safety.

Founded by a veterinarian, Royal Canin has over 40 years experience in Health Nutrition. Our work with veterinarians, pet nutritionists, breeders and cat professionals from around the world has provided us with knowledge about the specific nutritional requirements of cats. This knowledge has allowed us to formulate the precise diet for your cat’s special needs.

Corn starch, hydrolyzed poultry by-products aggregate, coconut oil, vegetable oil, powdered cellulose, natural flavors, dried chicory root, calcium sulfate, fish oil, sodium silico aluminate, fructooligosaccharides, sodium pyrophosphate, potassium phosphate, choline chloride, L-lysine, potassium chloride, DL-methionine, vitamins [DL-alpha tocopherol acetate (source of vitamin E), L-ascorbyl-2-polyphosphate (source of vitamin C), niacin supplement, vitamin B12 supplement, D-calcium pantothenate, biotin, pyridoxine hydrochloride (vitamin B6), riboflavin supplement, thiamine mononitrate (vitamin B1), vitamin A acetate, folic acid, vitamin D3 supplement], taurine, L-tryptophan, L-alanine, histidine, salt, marigold extract (Tagetes erecta L.), magnesium oxide, rosemary extract, glycine, preserved with mixed tocopherols and citric acid, trace minerals [manganese proteinate, ferrous sulfate, manganous oxide, copper sulfate, sodium selenite, copper proteinate], potassium iodate.

Calorie Content

Contains 3759 kcal ME/kg (calculated), 335 kcal ME/cup

Crude Protein (min) 22.6%
Crude Fat (min) 15.0%
Crude Fiber (max) 5.6%
Moisture (max) 8.0%

Weight Overweight Normal Lean
4.4 lb (2 kg) 1/4 cup (26 g) 3/8 cup (33 g) 1/2 cup (39 g)
5.5 lb (2.5 kg) 3/8 cup (30 g) 3/8 cup (38 g) 1/2 cup (46 g)
6.6 lb (3 kg) 3/8 cup (35 g) 1/2 cup (43 g) 5/8 cup (52 g)
7.7 lb (3.5 kg) 1/2 cup (39 g) 1/2 cup (48 g) 5/8 cup (58 g)
8.8 lb (4 kg) 1/2 cup (43 g) 5/8 cup (53 g) 3/4 cup (64 g)
9.9 lb (4.5 kg) 1/2 cup (46 g) 5/8 cup (58 g) 3/4 cup (69 g)
11.0 lb (5 kg) 5/8 cup (50 g) 3/4 cup (62 g) 7/8 cup (75 g)
13.2 lb (6 kg) 5/8 cup (57 g) 3/4 cup (71 g) 1 cup (85 g)
15.4 lb (7 kg) 3/4 cup (63 g) 7/8 cup (79 g) 1 1/8 cups (95 g)
17.6 lb (8 kg) 3/4 cup (70 g) 1 cup (87 g) 1 1/8 cups (104 g)
19.8 lb (9 kg) 7/8 cup (76 g) 1 1/8 cups (95 g) 1 1/4 cups (114 g)
22.0 lb (10 kg) 7/8 cup (82 g) 1 1/8 cups (102 g) 1 3/8 cups (122 g)

Royal Canin Veterinary Diet Feline Ultamino Dry Cat Food

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Customer reviews

Kali 8
24 May 2019

My cats love it!

The vet suggested I try this food for my cat while we determine what was cause her allergy. All of our cats LOVE this food!!!! When it turned out that it wasn't her regular food causing the allergy, but her cat treats, they were a bit upset to have to go back to their regular food. Now, we use this food as cat treats. Even though Royal Canin cost more than regular food, it cost way less than cat treats do. Especially since some members of my household tend to feed the cats quite a few treats! :-) Yes, as others have mentioned, the food does have a very distinctive smell. When we were feeding it to them regularly as food I did get used to the smell after a few weeks. It also helped keeping the food sealed, which is always best anyway to keep the food fresh.
22 Dec 2018

Good and Bad

My cat was put on this due to vomiting and diarrhea. Both are gone, but I can barely get her to eat this. As others have said, it smells awful. I am not exaggerating when I say that I can smell it from 10 feet away. I have to keep the bag sealed or it smells up the room. She will only eat it because I won't let her have anything else and she is starving.
05 Nov 2018

Helped my cat with a protein allergy!

I adopted my cat and he had chronic diarrhea, no idea why. Tried over the counter food sensitivities food but nothing worked. Finally vet put him on this food after a couple others and it worked! Apparently he's sensitive to proteins and this food breaks it down enough that he can digest it. Only downside is it smells horrible and it took him a while to get used to the taste (at first he didn't eat very much of it). Plus too expensive!
02 Nov 2018

Great food

All my cats love this. The quality is always consistant
31 Oct 2018

Awesome Food

I have two very picky older cats. The Royal Canin brand has great choices for older cats that they enjoy. My cats health improved during the time the started to eat tis food. I was a very happy with my choice. My cats are happy with the choice.
31 Oct 2018

Great cat food.

I bought this type of food about 2 months ago, my cat loves it couldn't ask for anything better.
11 Oct 2018

8 pawsdown!

I have 8 cats. One has yet to be determined allergies (itchy/scratchy). He's been on RC Limited Diet Duck/Green Pea formula for years. The DVM thought maybe Ultamino formula would be better. NOT! First, it smells horrendous. Cats have a keen sense of special & they ALL took one whiff of this food and turned up their noses. Even the feral cat I feed wouldn't eat it! Second, it is only available in a 5.5# bag. If my cats HAD liked the food, it would be cost-prohibitive, as are many of the RC foods but as a pet parent, what other option(s) do I have? If they need a certain food, they need it.
Royal Canin response
Thank you for reaching out. An alternative to speak to your veterinarian about is the Hydrolyzed Protein Adult HP
04 Oct 2018

Walter loves it

I bought this about 6 months ago. Walter has IBS and the veterinarian recommended it. It took about 3 weeks and Walter started feeling much better. He doesn't throw up as much as he used to and has started to gain his weight back. This food made a big difference in my cats wellness!
04 Oct 2018


After trying other hydrolized protein feeds, we were were ready to resort to invasive tests to get to the bottom of our cat's colitis. She improved in a day on the Ultamino and was symptom - free in less than a week. And she likes it! Just wish there was a canned version or treats!
04 Oct 2018

My cat had diarrhea for almost an entire year. Vet ran multiple lab test only to find no real issue but confirmed a DX of IBD. This food is a life changer. I can’t say enough about it. She is doing great now and the food is the reason. Thanks so very much !