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

  • Canine Urinary SO is a complete and balanced diet for adult dogs formulated to aid in the nutritional management of calcium oxalate and struvite urolithiasis.
  • Reduced magnesium level supports urinary health
  • Royal Canin Urinary SO Index® promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate 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
  • 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 4.8 out of 5 by 420 reviewers.
Rated 4 out of 5 by not sure if it is working yet.. my dog has bladder issues and was found to have crystals in her urine. Since July, she has had 3 incidents where she will have blood in her urine and strain to urinate, and have little to no control over it. It usually happens for about a day and then stops. i'm not sure if there's any other issues going on (crystals were the only thing the vet has found thus far with doing urine cultures, tests for UTI's, and ultrasounds), but this food was prescribed to her. She has been on it since some time around the end of October. She had one of those incidents in November; maybe the food hadn't been in her system long enough to work yet. So far, it seems to be working, but time will tell if this food is actually doing what it is supposed to do. Chewy has the best price on this food compared to my vet and other sites that sell this food. December 28, 2016
Rated 5 out of 5 by Rosie loves this food. Rosie has eaten this food for 3 years. It must taste good because my others dogs try to eat it any chance they get. January 14, 2017
Rated 5 out of 5 by Great size for my small dog I was really surprised how well my dog took to her new food. No problems getting her to eat it. She actually likes it better than what I've been giving her for years. Small size pieces for an older dog. January 8, 2017
Rated 5 out of 5 by Great product for kidney stone protection Great nutrition for our lab/border collie mix. Keeps her free of kidney stones. January 3, 2017
Rated 5 out of 5 by Our dog is doing well on this food. I was very happy with the speed in which this food came. Since it was during the holidays, I was afraid it would be late as I was close to running out. It came right to the door! I will be ordering again. December 31, 2016
Rated 5 out of 5 by Happy with purchase It arrived in a timely manner and was packaged very well, please with the customer service experience also,very friendly and helpful and professional,my dog SABER is very happy with the food December 31, 2016
Rated 5 out of 5 by Chewy comes thru again!! Chewy has consistently had the best product selection at the best overall prices, hands down! This special prescription food is not only hard to find, but ridiculously high priced if bought locally or at most online sources. Chewy had the best price (still high from the Mfgr!!) and with Auto Delivery, it's even better! December 29, 2016
Rated 5 out of 5 by precription diet food for my dog excellent. I love being able to have my pets dog food sent right to the house. It is a prescription product and all I had to do is give Chewy my vets name and they faxed the paperwork to my vet and I was able to purchase the item very quickly and with ease. Also, after purchase, I was given a $15.00 coupon and called Chewy up. I was a first time customer and they honored the coupon! The clerk on the phone was very pleasant and helpful. that is great customer service in my book! I would recommend Chewy to all my pet owner friends! m thank you again for the great customer service. December 13, 2016
  • 2017-01-16 T06:15:21.414-06:00
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