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Royal Canin Veterinary Diet Urinary SO Dry Dog Food

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25.3-lb bag
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Royal Canin Veterinary Diet Urinary SO Dry Dog Food, 25.3-lb bag

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 ships directly from Royal Canin and will arrive separately from other products ordered from This product will not be shipped until a copy of a valid prescription authorization is faxed to 786-528-6088 or e-mailed to

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Item Number 49969
Weight 25.3 pounds
  • Royal Canin
  • Dry Food
Special Diet
  • Prescription Food
  • Adult
Country of Origin
  • United States
Brewers rice, corn, chicken fat, chicken meal, natural flavors, dried 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 (vitamin B2), 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 natural mixed tocopherols and citric acid.

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Royal Canin Veterinary Diet Urinary SO Dry Dog Food Customer Reviews

Royal Canin Veterinary Diet Urinary SO Dry Dog Food 4.7 5 213 213
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
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
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
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
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
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
Highly recommend We loved our beloved pets, and when their eyes tell us they are not feeling well, we respond. I had no idea that there was a urinary problem until the vet diagnosed my dog, and recommended the R C Urinary SO food which I initially purchased from then. Thank goodness I found the Mr.Chewy site, and was able to order from them. Lucy is 100% improved and I'am grateful there was a product that helped. September 2, 2012
Working Better than Skin & Stone Version Had my Pomeranian mostly on Royal Canin Skin & Stone Small breed Dog Food since his Calcium Oxalate blockage operation. Since they disco'd this Formula. I choose this formula rather than the over-the-counter one suggested by the Royal Canin. Urinary volume has increased by 30-50%. Very happy with the Protein content of Royal Canin foods. August 28, 2012
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