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Royal Canin Veterinary Diet Urinary SO Dry Dog Food

List Price: $85.79
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25.3-lb bag
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Product Description

Lower urinary tract disease (LUTD) refers to a group of disorders that commonly leads to irritation of the urinary tract and corresponding undesirable clinical signs.

What causes Lower Urinary Tract Disease? In dogs, bacterial infections of the urinary tract and the presence of stones (uroliths) in the urinary tract are the most common causes. This diet promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals.

Key Benefits

  • Recommended for dogs at risk of developing lower urinary tract disease
  • Dissolution of pure struvite uroliths
  • Help prevent struvite, calcium oxalate and phosphate uroliths
  • Provides nutrition that aids in the management of pure struvite uroliths
  • 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
  • Increasing the urine volume simultaneously reduces the saturation of urine with calcium oxalate and struvite crystals

NOTE: Royal Canin veterinary diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to

See all items by Royal Canin Veterinary Diet »

Item Number 49969
Weight 25.3 pounds
  • Royal Canin
Food Form
  • Dry Food
Special Diet
  • Prescription Food
  • Adult
Country of Origin
  • United States

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Important Information


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

Customer Ratings & Reviews

Rated 4.7 out of 5 by 285 reviewers.
Rated 5 out of 5 DOG LOVES ROYAL CANIN URINARY SO DRY My 11 year old Shitzhu was prescribed this food for a bad UTI and struvite crystals. I was very concerned if I would be able to get him to eat it because he is very picky. As other people have shared in their reviews that their dog loves this food, I can also now say that MY DOG LOVES THIS FOOD. I didn't even transition him with mixing his old food, I just gave it to him straight the first time and he ate it the first day! VERY THANKFUL I spent a little extra money for Royal Canin rather than what vet originally prescribed, H...'s S.D. CD. I had read many bad reviews about smell of food and pets not eating it. ROYAL CANIN ROCKS !! September 7, 2012
Rated 5 out of 5 by But only in the moderate calorie dry food My dogs had struvite stones too and I switched to Royal Canin dry food. My Shitzu put on ten lbs. in a year or two! Now I am using the moderate calorie Royal Canin. Same product but less calories. Hannah has already lost a few pounds and I just started using it about two months ago! Chewy doesn't carry it, but if enough of us want them to, they will! September 11, 2012
Rated 5 out of 5 by Gave in! I really didn't want my dog on this food. I have never been a big believer in these foods for good nutrition, but here is the deal... Milo has struvite crystals that were turning into stones. I went the holistic way and it changed nothing. I had no choice, this food or surgery down the road. Four weeks later he had his first scan and they were hardly noticeable, in fact the doctor was so pleased he doesn't have to go back for a re-check until Dec.! It works and that is all that matters to me. One note that may help, but ask your vet first. I changed his water to distilled, not tap, not spring, the less minerals the better. It is sold by the gallon in Walmart for 88 cents a gallon....Keeps the ph of the urine perfect along with this great food. October 28, 2013
Rated 5 out of 5 by It works for stones My Bichon never turned her nose up at this food. She needed it because she had bladder stones 7 years ago and has been on it ever since with no treats except ice and this food as treats. No bladder stone problems since. It cleared up the stones without surgery. May 21, 2012
Rated 5 out of 5 by This stuff has saved my dog's life! I have a Japanese chin/King Charles spaniel mix who has suffered from bladder stones for most of his early life. Unfortunately, neither my vet nor her assistants offered a solution for this problem, other than not giving the dog table food (which we had done a little). So the poor little guy suffered through two operations over a 4 year period. Then a new vet joined their practice and immediately told us to put him on Royal Canin Urinary SO. He said the food had additional amounts of sodium which made the dog drink more water, and that would (hopefully) help to flush out the bladder stones before they got too large and caused a blockage. Turns out my dog loved the food, and sure enough ... 3 years later he has yet to have a blockage from the stones. This food isn't cheap, but if your small dog suffers from bladder stones I highly recommend giving it a try! September 4, 2012
Rated 5 out of 5 by Helped our St. Bernard Helga had struvite crystals as a puppy which led to trouble urinating. We switched her to Royal Canin Urinary SO and the crystals cleared up quickly. She also seems to like the food well enough. It is important to note that we routinely pour warm water over her food in order to ensure she is getting enough water, as her water intake has typically been on the low side even before starting this food. A side benefit has been that her urine is not turning our grass yellow as it used to, which may just be a coincidence but which seemed to start happening after we switched her to this lower protein food. May 29, 2013
Rated 2 out of 5 by Disappointed that price keeps increasing month to month despite free ship and autosave. Increased 16.00 in 6 months! Will be looking elsewhere Have no choice on dog food since this is Vet Rx Dog Food. Didn't lessen urinary infections but did manage to get rid of crystals. It took adding daily cranberry chews with urinary SO to decrease amount of UTI's. Very disappointed that price on this site keeps increasing month to month (50.90 to 57.43 to 66.49) which makes it less competitive despite free ship and autosave. Will be shopping elsewhere or getting dog food directly from vet at same price July 1, 2015
Rated 5 out of 5 by Works wonders for my dog About 6 months ago, my dog had an episode with bladder stones. Vet prescribed a regimen of medication as well as this Royal Canin canned and dry food. Within 8 weeks, the stones were gone. We keep her on the food now to prevent the stones from coming back. Great product, but note that dog will likely gain weight while on this diet, so plan to exercise her a little more. February 22, 2013
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