Contains hydrolyzed milk protein and L-tryptophan to help manage cats exhibiting fearful behaviors in stressful environments and social situations.

Formulated to increase the urine volume and help in the management of both struvite and calcium oxalate crystals through the use of Relative Supersaturation (RSS) methodology.

Specially formulated to assist in the management of lower urinary tract disease, stress and anxiety in the feline patient.

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Labrador Retriever adult sitting with its owner outdoors

Chicken by-product meal, corn gluten meal, brewers rice, wheat, corn, pea fiber, natural flavors, dried chicory root, wheat gluten, fish oil, chicken fat, salt, calcium sulfate, sodium bisulfate, potassium chloride, sodium pyrophosphate, DL-methionine, vegetable oil, psyllium seed husk, monocalcium phosphate, fructooligosaccharides, choline chloride, vitamins [DL-alpha tocopherol acetate (source of vitamin E), niacin supplement, 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], taurine, L-tryptophan, dried hydrolyzed casein, trace minerals [zinc proteinate, zinc oxide, manganese proteinate, ferrous sulfate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], L-carnitine, marigold extract (Tagetes erecta L.), rosemary extract, preserved with mixed tocopherols and citric acid

Calorie Content

This diet contains 3350 kilocalories of metabolizable energy (ME) per kilogram or 322 kilocalories ME per cup on an as fed basis (calculated).

Crude Protein (min)32.0%
Crude Fat (min)9.0%
Crude Fiber (max)6.8%
Moisture (max)8.0%
Tryptophan (min)0.31%
Calcium (max)1.4%
Phosphorus (max)1.3%
Magnesium (max)0.08%.

Dry Feeding

Cat Weight Low Activity Medium Activty High Activty
4.4 lb (2 kg) 1/4 cup (28 g) 3/8 cup (35 g) 1/2 cup (43 g)
6.6 lb (3 kg) 3/8 cup (38 g) 1/2 cup (47 g) 5/8 cup (57 g)
8.8 lb (4 kg) 1/2 cup (46 g) 5/8 cup (58 g) 3/4 cup (70 g)
11 lb (5 kg) 5/8 cup (54 g) 3/4 cup (68 g) 7/8 cup (82 g)
13.2 lb (6 kg) 5/8 cup (62 g) 7/8 cup (78 g) 1 cup (93 g)

Mixed Feeding

Cat Weight Cans / Day Low Activity Medium Activty High Activty
4.4 lb (2 kg) 1/2 1/4 cup (19 g) 1/4 cup (27 g) 3/8 cup (34 g)
6.6 lb (3 kg) 1 1/4 cup (19 g) 3/8 cup (30 g) 3/8 cup (40 g)
8.8 lb (4 kg) 1 1/4 cup (27 g) 3/8 cup (42 g) 5/8 cup (54 g)
11 lb (5 kg) 1 3/8 cup (35 g) 1/2 cup (53 g) 3/4 cup (68 g)
13.2 lb (6 kg) 1 1/2 cup (43 g) 5/8 cup (64 g) 7/8 cup (80 g)
Royal Canin Veterinary Diet Feline Urinary SO + Calm Dry Cat Food

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Customer reviews

20 Feb 2024

Miracle Food

I purchased this product a few weeks ago upon the recommendation of my vet. My cat has suffered from urinary and bladder issues for years. She pees blood, has crystals and chews her belly and paws raw due to suspected bladder pain. She is a entirely new cat since starting her on this food! She no longer chews her belly or paws and is growing hair on her belly for the first time in years. She's calm, happy and using the litter pan on a normal basis without blood in her urine. The vet said that she has no more bladder inflammation either. This food has been a miracle cure for my kitty. Please never stop making it!
Royal Canin response
Thank you! We are very happy to hear that this product has worked great for your cat.
13 Feb 2024

Cat will not eat it.

I purchased this food since its fish flavored for my cat who needs urinary/calm food. He will not eat it at all. I have tried for about 2 weeks to get him to eat it and simply will not touch it.
Royal Canin response
We are very sorry for your experience. Please return the food to the place of purchase for a full refund.
Peter the Boss
14 Nov 2023

Thank you for your cat food.

I got this 2 months ago it has helped my cat a lot he was blocking off and not able to pee 4 times. Could you please mail me some coupons. I have two cats on their special diet.
07 Nov 2022

So far so good.

I brought up my cats anxiety to her vet, and we ended up deciding on this food because she’s already suspected of having struvite crystals (her biological brother was officially diagnosed) but her anxiety was awful. She was also put on fluoxetine as well, and the combination has done wonders. The only problem was that she wasn’t eating it alone, so I had to take a couple of tablespoons away from each of the cats regular food and mix their kibble with canned food. Worked wonders, because now she eats all of it without having to try and coax her. I’m just happy she’ll let me groom her again, she has long fur and it’s all built up.
30 Oct 2022


My vet prescribed this about a month ago and after a week my cat started scratching himself bloody. No other changes or new items in diet or environment. Not sure which specific ingredient is the allergen, but disappointing.
21 Aug 2022

Great urinary food

I have been using this food for a few months now for my male who had crystalluria on a UA. He loves the food and I do think the calming aspect helped when I introduced 2 new kittens into the house!
06 Jun 2022

Very disappointed

My cats have been on Royal Canin ‘Calm’ for about 7 years and it has been amazing! I was a bit nervous to hear that weren’t making it anymore and had changed the formula to ‘Urinary SO + Calm’ but we bought a big bag and gave it a try. It has been a few weeks and the behaviour of both my cats has changed dramatically, one only coming out from under the bed to eat and use the washroom, the issue we had before we found ‘Calm.’ Our issue is not environmental and over the years we had friend many different things to calm her but only had success with the original brand of this food. Not sure where to go from here, very sad to say the least.
31 May 2022

Cats love this food

My cats love this food and are always wanting more. I don't know that the calming ingredients are enough for my cat, but they do seem to help a bit. I still use a diffuser in addition to the food, to help keep my boy less stressed. I would prefer a grain free formula, however I have not found any urinary formulations that do not contain grains. Prior to my cat's urinary issues, I had been feeding what I felt was a better quality food for about half of the price. Overall, my cats like the food and I have peace of mind that he is less likely to have urinary issues while eating this food.
31 May 2022

Wonderful product!

My cat had to have emergency surgery several years back, including stating nearly a week at the vet/emergency vet to recover. I opted to switch his diet afterwards to help avoid further complications. The vet had a sample of the urinary+calming food, and my cat loved it and has been on it ever since. He made a full recovery and has been healthy and happy since then! Sometimes, he even gets mail!
02 Nov 2021


This stuff was great and really helped my two cats not fight all the time. One of the cats has kidney issues and has to be on the prescription urinary food. This stuff was a life-saver and we miss it.