Royal Canin Veterinary Diet Urinary SO Dry Dog Food

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25.3-lb bag
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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
  • Weight
    25.3 pounds
  • Brand
    Royal Canin
  • Breed Size
    All Breeds, Small, Medium, Large
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Prescription Food

Nutritional Info


  1. 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.
  2. New Formula: Brewers Rice, Corn, Chicken By-Product Meal, Chicken Fat, Natural Flavors, Egg Product, Powdered Cellulose, Salt, Corn Gluten Meal, Potassium Chloride, Monocalcium Phosphate, Calcium Carbonate, Calcium Sulfate, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), Biotin, D-Calcium, Pantothenate, Vitamin A Acetate, Pyridoxine Hydrochloride (Vitamin B6), Pyridoxine Hydrochloride (Vitamin B6), Niacin Supplement, Folic Acid, Thiamine Mononitrate (Vitamin B1), Vitamin B12 Supplement, Riboflavin Supplement, Vitamin D3 Supplement, Choline Chloride, Trace Minerals [Zinc Proteinate, Zinc Oxide, Ferrous Sulfate, Manganese Proteinate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite, Copper, Proteinate], Taurine, Marigold Extract (Tagetes Erecta L.), Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

  1. 3,649 kcal/kg, 288 kcal/cup
Guaranteed Analysis
Crude Protein 14.0% min
Crude Fat 14.0% min
Crude Fiber 4.7% max
Moisture 10.0% max
Magnesium 0.08% max

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Customer Reviews

Rated 4.7 out of 5 by 379 reviewers.
Rated 5 out of 5 by Royal Canine SO My Weim. has a unitary problem and the vet prescribed Royal Canine SO. The vet charges more for the product then Chewy so figuring that she will be eating this for a long time it was prudent to find it cheaper then the vet. It is a prescription food and Chewy handled that part of the purchase super fast. The shipment was prompt and the Weim. and I are happy. October 23, 2016
Rated 5 out of 5 by Nathan Lee My pup (6) Raven has had re-occurring urinary infections. I think it was because the food I was feeding her. I noticed when I switched to Royal Canin Veterinary Diet Urinary Dog Food and used antibiotics the infections cleared up. However when I switched to her regular food the infections came back. I am now keeping her on the Royal Canin Veterinary Diet Urinary Dog Food. October 19, 2016
Rated 5 out of 5 by nice bite size for small dogs My Shih-tzu Paisley has been on this food ever since she was 10 weeks old because she had bladder stones. My vet put her on this food right then. And within a few weeks the stones turned into crystals which was easier for her to pass when peeing. The vet checks her urine every few months & so far no stones . She is 2 1/2 yrs old now & is still eating this food & she loves it. It has helped her alot so I will be keeping her on this food. Its cheaper than the surgery !!! Highly Recommend October 17, 2016
Rated 5 out of 5 by A must have for my lil' one!! With traveling, it is rather difficult to keep Cappy on his necessary diet. has made it very easy with ordering and different addresses. And customer service has been excellent ....thank you Chewy for your help! October 17, 2016
Rated 5 out of 5 by Love Great communication, great customer service and response. This prescription food is exactly the same that I was buying from the vet. The auto delivery option saves me time and money. October 2, 2016
Rated 3 out of 5 by A necessary evil. After my 35 day pregnant dachshund had to have bladder surgery to remove a large struvite bladder stone, my vet said she HAD to have this special food, or she'd be back for another bladder stone removal. So I ordered it. This stuff has no real meat in it, it is yellow in color and she is eating it like she is starved. It DOES do what it claims to....makes her urinate(profusely). I'll feed her this bagful, but in the meantime, I'm looking for a diet alternative that will give her good bladder function AND some decent ingredients. September 23, 2016
Rated 5 out of 5 by This produce is veterinary prescribed for a dog who had a badder stone and to prevent others. The food arrived quickly and it is quite obviously flavorful and a healthy choice. This pup who almost died frim his condition is eating and putting on the weight he needs. October 5, 2016
Rated 5 out of 5 by My dog likes it My dog likes this food. I mix it with about 1/3 a can of canned stew from another company. October 4, 2016
  • 2016-10-31 T06:34:15.422-05:00
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