Royal Canin Veterinary Diet Urinary UC Low Purine Dry Dog Food, 18-lb bag

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Cystine stones (uroliths) occur when an inherited defect of the kidneys causes a build up of cystine in the dog’s urine. Cystine is an amino acid that is filtered and reabsorbed by the kidneys. The build up of this amino acid in the urine leads to the formation of cystine stones. Certain breeds are more affected than others by cystine urolithiasis. These include English Bulldogs, Newfoundlands, Dachshunds, Chihuahuas, and Mastiffs. Mixed breed dogs with the ancestry of these genetically susceptible breeds can also be affected.

Key Benefits

  • Canine Urinary UC Low Purine is a highly digestible, palatable, complete and balanced adult dog food formulated to meet the nutritional needs of adult dogs prone to urate, cysteine and xanthine urolithiasis.
  • Low purine proteins combined with the production of alkaline urine help reduce the risk of urate stones
  • Contains moderate quantities of high quality proteins and controlled methionine and cysteine levels
  • Formula increases the urine volume to simultaneously reduce the saturation of urine with struvite and calcium oxalate precursors. - See more at:
  • Enhanced levels of linoleic acid, zinc, and biotin help to promote a healthy skin and shiny coat

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
    18.0 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, Wheat, Egg Product, Chicken Fat, Corn Gluten Meal, Natural Flavors, Monocalcium Phosphate, Wheat Gluten, Fish Oil, Calcium Carbonate, Potassium Chloride, Fructooligosaccharides, Salt, Taurine, Potassium Citrate, L-Lysine, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), Inositol, Niacin Supplement, L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), D-Calcium Pantothenate, Biotin, Pyridoxine Hydrochloride (Vitamin B6), Riboflavin Supplement, Thiamine Mononitrate (Vitamin B1), Vitamin A Acetate, Folic Acid, Vitamin B12 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], L-Carnitine, Marigold Extract (Tagetes Erecta L.) Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

  1. 3,718 kcal/kg, 338 kcal/cup
Guaranteed Analysis
Crude Protein 18.0% min
Crude Fat 13.0% min
Crude Fiber 3.1% max
Moisture 10.0% max
Cystine 0.3% min
Methionine 0.45% min

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Customer Reviews

Royal Canin Veterinary Diet Urinary UC Low Purine Dry Dog Food is rated 4.7 out of 5 by 19.
Rated 5 out of 5 by from Great Food! I own two Dalmatians so anyone who knows the breed, know that they're prone to urate stones. Both my dogs had issues and one had emergency surgery. I work in a vet office so I had the availability to try all the low purine diets with purina, hills, etc. This brand is not only cheaper but both of my dogs have no issues and love the food. A couple others I tried smelt terrible and the kibble was white. I think the brown smell good kibble keeps my dogs happy and the ingredients keep me happy!
Date published: 2016-12-12
Rated 5 out of 5 by from Life Saving product I do not know if my dog would be alive without this special dog food. He had 2 bladder surgeries for stones and blockage in 12 months before this product was recommended. One year on this dog food and the ultrasound of his bladder was clear. We are extremely pleased with this product.
Date published: 2016-09-15
Rated 5 out of 5 by from FAST SHIPPING! My dalmatian has to be on this food for maintenance from having Urinary stones. this is an amazing dog food! not only is it maintaining but he does not throw up or have any issues digesting like he used to have. And its so nice not to have to stop by the veterinary office all the time to pick up this food. I would recommend this to anyone that has a veterinarian say their dog needs it……. My dalmatian is healthier then he has ever been and he has been on this food for about 9 months. it is pricy but way less expensive then a surgery.
Date published: 2016-01-19
Rated 5 out of 5 by from A very needed product Ordering from was so easy and everyone was so helpful. Ordering from chewy wasn't just about the food. Of course my dog needs a certain food product for health reasons and the price was great at chewy(kudos!). When I looked at the website it became apparent to me that this company cares. My dogs are my everything - like so many other owners of fur babies - so I need to see know and feel like we are being taken care of and that the employees really do care about animals. We weren't just another sale or ticket. Thanks Chewy!
Date published: 2015-07-09
Rated 5 out of 5 by from refined dog food. Thank you for doing research on behalf of my Dalmations. My Vet recognised the problem and prescribed Pills to oblivate the condition. Your dog food is his maintence and thanks to you all my dogs are well.
Date published: 2014-11-20
Rated 5 out of 5 by from Quite Satisified Excellent selection of products...something for all. Great customer service and follow-through getting RX from vet office. Shipped product immediately after. Offered 20% savings for auto-ship...a clincher for me. Satisfied with product selection and price. I'm sold.
Date published: 2016-08-04
Rated 5 out of 5 by from English Bulldog with Bladder stones My 3yo EB had to be out on this food after she had surgery to remove a large bladder stone. She's only been on it for about 3 weeks so far but seems to like the food.
Date published: 2016-07-28
Rated 5 out of 5 by from The food we needed, expedited! Our dog had unexpected bladder stone surgery. And this food was recommended by our vet, only they didn't carry this formula and it would have taken a week to get in. We were able to get the food in 2 days from and at a discount. The dog seems to like it, it does have a strong smell and we 'wet' the food- he gobbles it right up!
Date published: 2016-04-06
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