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HELPS DISSOLVE STONES: Innovative urinary tract dog food helps dissolve pure struvite stones and helps prevent calcium oxalate stones

BLADDER HEALTH: Lowers the risk of crystal formation using RSS methodology for dog bladder health

S/O INDEX: The exclusive S/O Index creates an environment unfavorable to crystal formation in the bladder to support urinary health

HELPS PREVENT STONE REOCCURANCE: Specialized diet, with a reduced level of magnesium, helps prevent struvite stones from reoccurring

When your dog has urinary issues, easing their discomfort requires special care. But with the help of your veterinarian and Royal Canin, there’s not just hope—there can be a true difference.

This veterinary-exclusive dry dog food was developed to nutritionally support your adult dog’s urinary tract and bladder health. It increases the amount of urine your dog produces to help dilute excess minerals that can cause crystals and stones. Relative Super Saturation (RSS) methodology is used to help lower ion concentration in urine, which contributes to stone formation. This formula promotes a urinary environment unfavorable to the formation of both struvite and calcium oxalate crystals. And this specialized nutrition, with a reduced level of magnesium, helps dissolve pure struvite stones and prevent struvite stones from forming. Lower urinary tract issues may be a recurring concern for some dogs. Talk to your veterinarian about keeping your dog on this urinary dog food for long-term urinary support. And ask them about the right Royal Canin wet dog food and treats to complement your dog’s diet.

With nearly 50 years of scientific research and observation, Royal Canin continues to deliver targeted nutrition to feed every pet’s magnificence. Not satisfied? Then neither are we. Our veterinary exclusive formulas are 100% satisfaction guaranteed. (Just contact us for more details.)

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Labrador Retriever adult sitting with its owner outdoors

Brewers rice, corn, chicken fat, chicken by-product meal, brewers rice flour, corn gluten meal, natural flavors, salt, powdered cellulose, potassium chloride, vegetable oil, calcium sulfate, fish oil, monocalcium phosphate, DL-methionine, fructooligosaccharides, L-lysine, choline chloride, taurine, vitamins [DL-alpha tocopherol acetate (source of vitamin E), biotin, D-calcium pantothenate, vitamin A acetate, niacin supplement, pyridoxine hydrochloride (vitamin B6), thiamine mononitrate (vitamin B1), vitamin B12 supplement, riboflavin supplement, vitamin D3 supplement, folic acid], trace minerals [zinc proteinate, zinc oxide, ferrous sulfate, manganese proteinate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], marigold extract (Tagetes erecta L.), L-tryptophan, rosemary extract, preserved with mixed tocopherols and citric acid.

Calorie Content

This diet contains 3741 kilocalories of metabolizable energy (ME) per kilogram or 333 kilocalories ME per cup on an as fed basis (calculated).

Nutrient Amount
Crude Protein (min)17.0%
Crude Fat (min)15.0%
Crude Fiber (max)3.7%
Moisture (max)10.0%
Eicosapentaenoic Acid (EPA) (min)0.08%
Docosahexaenoic Acid (DHA) (min)0.05%
Calcium (max)0.75%
Phosphorus (max)0.7%
Magnesium (max)0.08%
Vitamin E (min)350 IU/kg
Lutein* (min)5 mg/kg.

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

Dry Feeding

Dog Weight Low Activity Medium Activity High Activity
4.4 lb (2 kg) 1/2 cup (41 g) 1/2 cup (47 g) 5/8 cup (54 g)
8.8 lb (4 kg) 3/4 cup (68 g) 7/8 cup (79 g) 1 cup (90 g)
13 lb (6 kg) 1 cup (93 g) 1 1/4 cups (107 g) 1 3/8 cups (122 g)
18 lb (8 kg) 1 1/4 cups (115 g) 1 1/2 cups (133 g) 1 3/4 cups (151 g)
22 lb (10 kg) 1 1/2 cups (136 g) 1 3/4 cups (158 g) 2 cups (179 g)
33 lb (15 kg) 2 1/8 cups (184 g) 2 3/8 cups (214 g) 2 3/4 cups (243 g)
44 lb (20 kg) 2 5/8 cups (229 g) 3 cups (265 g) 3 3/8 cups (301 g)
55 lb (25 kg) 3 cups (271 g) 3 1/2 cups (313 g) 4 cups (356 g)
66 lb (30 kg) 3 1/2 cups (310 g) 4 cups (359 g) 4 5/8 cups (408 g)
77 lb (35 kg) 3 7/8 cups (348 g) 4 1/2 cups (403 g) 5 1/8 cups (458 g)
88 lb (40 kg) 4 3/8 cups (385 g) 5 cups (446 g) 5 3/4 cups (506 g)
99 lb (45 kg) 4 3/4 cups (420 g) 5 1/2 cups (487 g) 6 1/4 cups (553 g)

Mixed Feeding

Dog Weight Cans / Day Low Activity Medium Activity High Activity
4.4 lb (2 kg) 1/4 1/4 cup (18 g) 1/4 cup (25 g) 3/8 cup (31 g)
8.8 lb (4 kg) 1/2 1/4 cup (24 g) 3/8 cup (35 g) 1/2 cup (45 g)
13 lb (6 kg) 1/2 1/2 cup (48 g) 3/4 cup (63 g) 7/8 cup (77 g)
18 lb (8 kg) 1/2 3/4 cup (70 g) 1 cup (89 g) 1 1/4 cups (107 g)
22 lb (10 kg) 1 1/2 cup (47 g) 3/4 cup (68 g) 1 cup (90 g)
33 lb (15 kg) 1 1 1/8 cups (95 g) 1 3/8 cups (124 g) 1 3/4 cups (153 g)
44 lb (20 kg) 1 1 5/8 cups (139 g) 2 cups (176 g) 2 3/8 cups (212 g)
55 lb (25 kg) 1 2 cups (181 g) 2 1/2 cups (224 g) 3 cups (267 g)
66 lb (30 kg) 1 2 1/2 cups (221 g) 3 cups (270 g) 3 5/8 cups (319 g)
77 lb (35 kg) 1 2 7/8 cups (259 g) 3 1/2 cups (314 g) 4 1/8 cups (369 g)
88 lb (40 kg) 1 3 3/8 cups (295 g) 4 cups (356 g) 4 3/4 cups (417 g)
99 lb (45 kg) 1 3 3/4 cups (331 g) 4 1/2 cups (397 g) 5 1/4 cups (464 g)
Urinary SO Dry Dog Food

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Customer reviews

Nitrosdrummies
22 Oct 2019

Amazing corrective diet.

7 years ago my Corgi had bladder stones removed. Since then he has been on strictly the Urinary SO diet. The diet has helped to keep the few stones that he has at bay. They haven't grown is size or changed in 7 years. I also use the wet food on occasion and bake into squares as an added treat.
JGM0
22 Oct 2019

Healthy Diet

This dog food is keeping my German Shepherd happy and healthy in her layer years!
Mmcoon03
22 Oct 2019

Great food

I buy this dog food for one of my dogs and the rest love it too!!
Guerena20
22 Oct 2019

anguyen
24 Apr 2019

Works for some UTIs

My female dachshund had severe UTIs with bleeding and was diagnosed with struvite bladder stones. The vet recommended this Urinary SO food plus one course of antibiotics. She's now been on this food for over a year and has not had one UTI. It works and she loves the taste too. I occasionally give her the Moderate calorie version, which is more gravy-like, to mix it up, but usually just the regular one because she's thin.
TooPricey
01 Mar 2019

Works - but pricey

This dog food seems to be working so far and my dog enjoys it. However the price seems to go up $10 every 3 months which seems far to often and frequent. I'm paying $40 more for the same bag that I started ordering just a little over a year ago. :(
Eizaguir
25 Nov 2018

This has kept my dog stone free for 6 years.

Myself and my family are loyal Royal Canin customers. They have a variety of foods that match the different diets of our dogs. Will continue to use them and recommend it.
bagiebel
23 Nov 2018

Dog enjoys it!

My dog has been on the moderate calorie version of this for a while. It’s been helping with his bladder crystals and his accidents in the house have become less frequent (now basically when the weather is bad). It’s also the only food we have had that our dog actually eats without putting up a fuss! It gets a little pricey (we have a 50 lb dog) but it works well!
Jonni
20 Nov 2018

My dog loves this and doesn't get any UTIs!

My dog has been on this food for almost 7 years. It was recommended by the vet as she had 2 urinary tract infections. After being on it for 4 years, I tried some "natural" dog food, which was cheaper. Of course, she got a UTI. I will never give her anything else. She is 10 now and not as active as she used to be. I alternate between the small dog Urinary SO in the morning and the Moderate Calorie SO at night.
bEAUbARN2
19 Nov 2018

prescribed by vet - loved by my baby girl1

MY GIRL HAS BEEN ON ROYAL CANIN FOR THE PAST 6 YEARS. THOUGH IT MY BE EXPENSIVE - IT HAS SAVED MY LITTLE GIRLS LIFE. LESS URINARY AND KIDNEY INFECTIONS. WITH 2 DOGS, MY GIRL HAS A TWIN BROTHER - THE VET SAID IT WAS SAFE FOR MY BOY - MADE MY LIFE EASIER ONLY HAVING TO BUY I BRAND OF DOG FOOD. THANK YOU FOR YOUR PRODUCT!