Provides nutrition that aids in the management of pure struvite uroliths.

Relative Supersaturation (RSS) methodology predicts the crystallization potential of urine. RSS is used to develop diets that lower the concentration of ions contributing to struvite and calcium oxalate urolithiasis.

Increasing the urine volume reduces the saturation of urine with calcium oxalate and struvite crystals.

Reduced level of magnesium, a natural component of struvite stones.

Specially formulated to assist in the management of struvite and calcium oxalate crystals and stones in adult dogs.

Working toward a sustainable future

Our belief that pets make our world better inspires and gives life to our purpose of making a better A BETTER WORLD FOR PETS ™

Discover more
Labrador Retriever adult sitting with its owner outdoors

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

Calorie Content

This diet contains 3717 kilocalories of metabolizable energy (ME) per kilogram or 320 kilocalories ME per cup on an as fed basis (calculated).

Crude Protein (min)16.0%, Crude Fat (min)15.0%, Crude Fiber (max)4.2%, Moisture (max)11.5%, Eicosapentaenoic Acid (EPA) (min)0.08%, Docosahexaenoic Acid (DHA) (min)0.05%, Calcium (max)0.63%, Phosphorus (max)0.7%, Magnesium (max)0.08%, Vitamin E (min)427 IU/kg, Lutein* (min)5 mg/kg.

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

Dry Feeding

Dog Weight Normal Overweight
4.4 lb (2 kg) 1/2 cup (48 g) 1/2 cup (41 g)
11 lb (5 kg) 1 1/8 cups (95 g) 1 cup (82 g)
22 lb (10 kg) 1 7/8 cups (159 g) 1 5/8 cups (138 g)
33 lb (15 kg) 2 1/2 cups (216 g) 2 1/8 cups (187 g)
44 lb (20 kg) 3 1/8 cups (268 g) 2 5/8 cups (232 g)

Mixed Feeding

Weight Can + Normal Overweight
4.4 lb (2 kg) 1/4 can + 1/8 cup (14 g) 1/8 cup (8 g)
11 lb (5 kg) 1/4 can + 3/4 cup (61 g) 1/2 cup (48 g)
22 lb (10 kg) 1/2 can + 1 1/8 cups (92 g) 7/8 cups (71 g)
33 lb (15 kg) 1/2 can + 1 3/4 cups (149 g) 1 3/8 cups (120 g)
44 lb (20 kg) 1 can + 1 1/2 cups (134 g) 1 1/8 cups (98 g)
Royal Canin Veterinary Diet Canine Urinary SO Dry Dog Food

Still have questions about this product?

Find out how to reach us, and get in touch

Ask a question

Customer reviews

Terri71
31 May 2022

Excellent Choice!!!

My dog LOVES this!!! I have a Boxer and they typically have sensitive stomachs. My Vet gave us a prescription for it because it is perfect for his urinary tract issues and sensitive tummy.
MNarie
07 May 2022

high in fat for a GI issue in dogs

My Standard Poodle is 15 years old and she recently had a bout of pancreatitis, so she was put on the GI diet. She has a bladder issue now and needs the urinary so which is nearly twice the amount of fat as the GI. its a dilemma for me. which is the priority. Ill have to have a conversation with my vet on Monday morning. thus far, she really likes the canned urinary SO. there are many options for this food. It would be easier for pet parents of have more guidance as to which is best for multiple issue, older dogs.
GgNa
18 Mar 2022

It did more damage than good

My dog has been on this diet for more than 2 years, and now he had surgery to remove large oxalates tones, 4 months after surgery the urinalysis results show a low PH and tendency to form the stones again, my vet told me this food lowered the urine Ph way too much and need to change the diet to another Rx brand. I DO NOT RECOMMEND this food at all, it did help at all. So, what is my choice now to prevent the formation of the stones again?
Gideon
20 Nov 2020

Looking for Guidance

My 8 year old cocker, neutered male, has been on the prescription version of Urinary SO and he enjoys it heartily! The vet, whom I trust, prescribed this because of heart problems. But his poo has become quite smelly and wet. And his skin is quite dry despite taking fish oil daily. Any thoughts?
Corgimomma
10 Apr 2020

Works well and my dog loves it!

My 12 year old female Cardigan Welsh Corgi had a bladder full of struvite stones and in just a few weeks, xrays show almost none. She loves the food and we wouldn’t be happier!
Hoosier1
08 Apr 2020

He won't touch it until.......

Zephyr just sniffs and walk way until I give him some of the canned SO on top of the dry food. He is spoiled by the canned SO.
Dino 14
18 Feb 2020

Kidney stone free for 7 years.

We have been giving our Lhasa Apso this dog food for 7 years and he only had kidney stones once this year in January. Without the food he never would have gone this length of time kidney stone free. Very happy that the food is available.
LiloLabradoodle
10 Feb 2020

Product Caused Urinary Leakage | Did not lower PH

My vet suggested that my 70lb labradoodle go on this diet after she has a few UTIs and her high PH level in her urine. Attempting to switch her to this was difficult. She would not eat it unless we mixed some wet dog food in. After about a month and a half of eating this food we noticed she was leaking urine consistently, even though she is fully house trained. We would see drops of urine on the ground everywhere and her dog bed would be saturated. We immediately took her off the diet and she recovered within a week. She did not have a UTI at the time and this was confirmed by the vet. The kicker is we went back to the vet and got another PHtest done, this had no effect on the PH which remained around 8.
MonieRod
15 Nov 2019

Urinary SO after Bladder Stone

[This review was collected as part of a promotion.] Our dog had to have a bladder stone removed and she was placed on this dog food afterwards to prevent recurrent stones. It has been 2 years now and no signs of recurrent stones! She loves this food, along with our other dogs! It's higher in calories, so be careful on portion size to prevent weight gain! It is on the expensive side, so be on the look out for coupons. FYI, it is sold by prescription.
Debbie0323
09 Nov 2019

My small dog loves the flavor!

[This review was collected as part of a promotion.] My veterinarian recommended this for my shih tzu several years ago after an instance of bladder stones. Since on this food, she's had no re-occurences.