Royal Canin Veterinary Diet® Canine Urinary SO® Moderate Calorie dry dog food

Founded by a veterinarian, Royal Canin has over 40 years experience in health nutrition. Our work with pet nutritionists, breeders, and veterinarians from around the world has provided us with knowledge about the specific nutritional requirements of dogs. This knowledge has allowed us to formulate the optimal diet for your dog's special needs.

  • Supports Struvite Dissolution
  • Moderate calorie content supports healthy weight
  • Increases urine volume to help decrease struvite and calcium oxalate levels
  • Supports urinary health
  • Royal Canin Urinary SO Index® promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals
  • 100% Complete and Balanced Nutrition
  • 100% Satisfaction Guaranteed

Canine Urinary SO Moderate Calorie is a complete and balanced diet for adult dogs predisposed to weight gain. It is formulated to aid in the nutritional management of calcium oxalate and struvite urolithiasis.

Where to Buy
Size: 17.6 lb
Size: 7.7 lb
Product Information

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

Moderate Calorie
Moderate calorie content, compared to canine Urinary SO, to help maintain ideal weight.

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

Relative Super Saturation (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.

Feeding Guide
Recommended Daily Feeding Portion
Weight Low Activity Medium Activity
4.4 lb (2 kg) 1/2 cup (40 g) 5/8 cup (47 g)
11.0 lb (5 kg) 1 cup (79 g) 1 1/8 cup (94 g)
22.0 lb (10 kg) 1 5/8 cup (133 g) 2 cup (158 g)
33.0 lb (15 kg) 2 1/4 cup (180 g) 2 3/4 cup (214 g)
44.1 lb (20 kg) 2 7/8 cup (224 g) 3 3/8 cup (266 g)
55.0 lb (25 kg) 3 3/8 cup (264 g) 4 cup (314 g)
66.1 lb (30 kg) 3 7/8 cup (303 g) 4 1/2 cup (360 g)
77.2 lb (35 kg) 4 1/4 cup (340 g) 5 1/8 cup (404 g)
88.2 lb (40 kg) 4 3/4 cup (376 g) 5 5/8 cup (447 g)
99.2 lb (45 kg) 5 1/4 cup (411 g) 6 1/8 cup (488 g)
110.2 lb (50 kg) 5 5/8 cup (445 g) 6 5/8 cup (528 g)
132.3 lb (55 kg) 6 1/2 cup (510 g) 7 5/8 cup (605 g)
1 cup = 8 fluid ounces = 85 grams

Brewers rice, corn, brown rice, corn gluten meal, chicken by-product meal, powdered cellulose, natural flavors, chicken fat, chicory, egg product, salt, wheat gluten, monocalcium phosphate, potassium chloride, vegetable oil, calcium sulfate, fish oil, DL-methionine, fructooligosaccharides, L-lysine, choline chloride, 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], taurine, trace minerals [zinc oxide, ferrous sulfate, manganous oxide, copper sulfate, calcium iodate, sodium selenite], marigold extract (Tagetes erecta L.), L-carnitine, rosemary extract, preserved with mixed tocopherols and citric acid.

Guaranteed Analysis
Crude Protein (min) 18.0%
Crude Fat (min) 9.0%
Crude Fiber (max) 7.5%
Moisture (max) 10.0%
Calorie Content
This diet contains 3298 kilocalories of metabolizable energy (ME) per kilogram or 261 kilocalories ME per cup on an as fed basis (calculated).
Product Reviews
Royal Canin Veterinary Diet ® Canine Urinary SO ® Moderate Calorie dry dog food is rated 4.8 out of 5 by 330.
Rated 5 out of 5 by from Food for Life My Basset Hound, Daisy, has been eating Royal Canin SO for years. The Urinary issue Daisy had years ago has not reoccurred. Daisy has never tired of the food and at 12 years of age continues to "wolf down her meal twice a day. Her weight is constant and energy level is just now starting to slow down a little due to her old age. Just like her papa. A great product that has help provide a quality life for my Daisy. Thank you.
Date published: 2015-08-11
Rated 5 out of 5 by from My Best Friends Cure! I believe Royal Canin's product has helped my 7 year old miniature schnauzer live an active and healthy life after his kidney stone surgery two years ago. Maxx is full of energy and is always ready for a walk or play in the back yard with his other schnauzer friend, Jagger. I keep Maxx on a strict diet of Royal Canin and the recommendation from my vet has been the best decision I have made.
Date published: 2015-08-10
Rated 5 out of 5 by from My dog loves this! When this was prescribed for my dog five years ago after she experienced bladder stones, I was concerned that she wouldn't eat it, but she gobbled it up from day one. She loves the food, now drinks sufficient amount of water and thankfully has had no more stones. She had been eating it daily for five years. My only concern is the cost, but her health is worth it.
Date published: 2015-09-02
Rated 4 out of 5 by from Keeps my dog well! My dog has been on the Urinary SO food for 7 years, since she was a puppy. In the past 3 years we changed to the Moderate Calorie version to keep her weight healthy. The only time we tried her off of the food, she got another terrible UTI. Although the food is expensive, it is worth it to keep her healthy. Just wish the moderate calorie came in a larger bag!
Date published: 2015-08-10
Rated 5 out of 5 by from My dogs love it! My dogs have been eating Royal Canin Moderate Calorie Urinary SO for years. They got a little chunky on the full calorie version, but are back down to their normal weight since eating moderate calorie. They both had calcium oxylate stones and this food has prevented any more stones from forming. I highly recommend feeding it to pets with urinary issues!
Date published: 2015-08-10
Rated 5 out of 5 by from Great alternative to regular SO My dog was put on SO after too many urinary tract infections and everything was great. No more UTIs but after 3 years she started gaining weight. We switched her to moderate Calorie and what a difference in her weight. I swear she had an easier time pooping also. She's a happy doggy now and so am I.
Date published: 2015-08-10
Rated 5 out of 5 by from Love this food! I recently switched my dogs food from Hills C/D to this S/O and I'm so glad I did. My dogs have had horrible UTI issues since I've had them. From filtered water to cranberry tablets and prescription food. They use to potty in bed all over house and I can now say since I've had them on this product I haven't had any issues. One of my dogs have crystals no matter what I do and I can honestly say since the food change they are dissolving! Love the brand and food!
Date published: 2015-08-10
Rated 5 out of 5 by from NICE! My dogs love this food. My little Rosko suffered from Urinary Tract Infections for a long time, on and off. My vet recommended Royal Canin Urinary S/O. Since then Rosko has not had any UTI's. I am so pleased as this is less money spent at the vet and less pain for my baby.
Date published: 2015-08-12
Rated 5 out of 5 by from Great Product with Care in Mind! Schnauzer has been using this food since I adopted him and he needed major surgery for a bladder stone. He always looks forward to eating the SO food, and he seems to be very healthy and full of energy! Thank you Royal Canine!
Date published: 2015-09-02
Rated 4 out of 5 by from Dog seems to like it... This food has been effective in keeping my pug from having a recurrence of bladder stones, which is wonderful. She seems to like the food. It is a bit on the expensive side, but generally is a good choice for our dog.
Date published: 2015-08-10
Rated 5 out of 5 by from Has kept my dog from having bladder stones My spayed female dog was having frequent UTI's and had several crystals in her urine, we started her on the s/o when she was 3 and she is now 7 , still on s/o reduced Valerie with no problems since we started at age 3
Date published: 2015-08-20
Rated 5 out of 5 by from Maintains Good Health My Shih Tzu had to have surgery to remove a large bladder stone. I was so anxious about her health but between great vets and this food keeping her diet in check, I have not had to worry as much. No more stones!
Date published: 2015-08-10
Rated 5 out of 5 by from Works! Our Schnauzer, Sadie, has had two surgeries for bladder stones. She has been on Royal Canin Urinary SO, exclusively, for two years and has no incidence of bladder stones since! Thank you, Royal Canin!
Date published: 2016-05-26
Rated 5 out of 5 by from Love this food! I started using this food for my miniature schnauzer, Toaster, and it's done a world of wonder for her! I can choose between wet and dry, depending on which she wants, and we couldn't be happier! : )
Date published: 2015-09-02
Rated 5 out of 5 by from Great Product! Our PBGVs (Petite Basset Griffon Vendeen) are prone to urinary infections and "stones." Our vet recommended Urinary SO Moderate Calorie and both dogs improved and eat this food with great relish!
Date published: 2015-08-10
Rated 5 out of 5 by from Great food!! I have been feeding this food to Babe for 2 years now and so far her bladder stones have not formed again. Yea!! She loves this food and gobbles it down. I highly recommend it.
Date published: 2015-08-10
Rated 5 out of 5 by from Great Food I have 2 miniature Schnauzers who both are on this veterinary diet food. They both have bladder and kidney issues which is only controlled with this food.
Date published: 2015-08-11
Rated 5 out of 5 by from Finally, a food she loves that makes her Thrive! We are so grateful for the effective results we've experienced with the Royal Canin Moderate Calorie S/O foods. Before trying S/O, I conducted a lot of research about non-prescription diets that claimed to help dogs with struvite tendencies, but despite my best efforts Jodie continued to experience crystals with painful UTIs, resulting in two separate surgeries. The third time this occurred, her vet was adamant that we begin Royal Canin S/O. I needed no further convincing. We started the diet immediately. After merely a week, it was obvious how much the S/O had helped to dissolve the crystals, and Jodie was on the road to recovery. It has been several months and her health and energy are now fully restored, her urinary levels remain stable, and above all she just loves this food-both canned and dry. Thank you, Royal Canin! You've given our little Jodie the opportunity to live large again!
Date published: 2015-08-11
Rated 5 out of 5 by from Wonderful Product! My mini dachshund has been on this for 2 yrs after having had back surgery at 3 yrs of age, and then developing crystalluria. I had been cooking organic food for her for about 2 yrs, and was afraid she wouldn't like the SO. She loved it right at first bite, and still does - can't wait to be fed each morning and evening! I'm so glad this product is so palatable and effective!
Date published: 2017-05-14
Rated 5 out of 5 by from Great food. My five year old Boston Terrier has been on this food for a little over a year now. I had him on the regular SO but he put on five pounds in a short period of time. Since switching him over, he's lost weight and has had only one bladder infection. I'd recommend this food over similar diets by other companies for palatability, price, and effect.
Date published: 2015-08-11
Rated 5 out of 5 by from Cardi Corgi Nikki likes it & keeps her in shape Purchased this food shortly after getting our rescue girl, Nikki. When she was diagnosed with severe bladder stones, requiring surgery, we were advised by our vet at Easttowne Pet Clinic, Madison, WI, to feed this for continued health. She loves the food, and the moderate calorie helped her lose some weight without sacrificing food volume.
Date published: 2017-05-22
Rated 5 out of 5 by from Prescription made easy Unfortunatly my dog has to be on a prescription diet for his urinary bladder crystals, however, having the Urinary SO has made it easy to ensure he is getting the right balance that his body requires to keep him healthy. It was also nice that a moderate calorie was developed to keep his weight manageable as he gets older.
Date published: 2015-08-10
Rated 5 out of 5 by from Turned my dog's urinary problems around in a month My weimaraner has struggled with urinary infections since she was a puppy. She was 9 years old when my vet finally recommended Royal Canin Urinary SO. I feed her the dry kibble and the wet dog food in a can. Her urinary issues have almost disappeared! She is a much happier and healthy dog now that she eats Royal Canin.
Date published: 2015-08-10
Rated 5 out of 5 by from Love it, proven results! Our Miniature Schnauzer, Peyton has been on Royal Canin Urinary S/O Moderate Calorie for a year and a half and it has been great. Along with the great taste Peyton has lost 3 pounds and his kidney problem has literally vanished. Honestly I can't say enough good about the product, just wish more stores carried it.
Date published: 2015-08-10
Rated 5 out of 5 by from Keeps my Dog Healthy This diet has been recommended by our Vet (for 8 years) to keep our dog without urinary crystals. Without it she would develop urinary tract infections and kidney stones. Without it, I fear she would not have live until now, 10 years old. She is very healthy and LOVES her Moderate Calorie Urinary SO food.
Date published: 2015-08-23
Rated 5 out of 5 by from I have five doxies that eat the dry and can and love it!! We had to switch to this a few years ago because one of our dog had two big kidney stones and had to have surgery. To avoid this again we started this food. We have not any problems since then. We would not change a thing with their food.
Date published: 2016-06-03
Rated 5 out of 5 by from Excellent Product My dog has been on this food for about a year now. She suffers from urinary incontinence and occasional urinary tract infections. In combination with medications both conditions have improved greatly. Also helps her maintain a healthy weight reducing unnecessary strain on her bladder.
Date published: 2015-08-11
Rated 4 out of 5 by from Very Good I have to keep her on this for the rest of her life!! She likes and enjoys this food the only this I don't like is the high calories as she's 10 yrs old and just not that active anymore!! Would like to also see a zipper on top so that it helps it to stay fresh longer for her!!
Date published: 2015-08-10
Rated 5 out of 5 by from No stones here My boy has been on SO since he was diagnosed with calcium oxalate stones about 11 years ago. We tried other brand after his first surgery and the only food that prevented the stones is the SO. He cleans his bowl out. Thanks to my boy my vet found the food that works.
Date published: 2015-08-15
Rated 5 out of 5 by from A little confusing until the vet explained it. Our little shih-Tzu has had gastrointestinal and urinary issues since he was a year old so our vet recommended this food. I was told to mix it with 1/2 cup warm water and he loves it! Most of his health problems have disappeared since we started him on this food.
Date published: 2015-08-11
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