ROYAL CANIN VETERINARY DIET Adult Urinary SO Dry Dog Food, 25.3-lb bag -

Royal Canin Veterinary Diet Adult Urinary SO Dry Dog Food

By Royal Canin Veterinary Diet
Rated 4.6781 out of 5 stars
Veterinary Diet Item

$102.99Chewy Price
$97.84Autoship Price
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Top IngredientsBrewers Rice, Corn, Chicken Fat...Potato, Rabbit Meal, Coconut Oil...Chicken By-Product Meal, Barley, Corn Gluten Meal...Brewers Rice, Chicken Fat, Chicken Meal...Brewers Rice, Hydrolyzed Soy Protein, Chicken Fat...
Breed SizeSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All Breeds
Special DietPea-Free, Veterinary Diet, With GrainLimited Ingredient Diet, Pea-Free, Veterinary Diet, Chicken-FreeLow Glycemic, Pea-Free, Veterinary Diet, With GrainPea-Free, Veterinary Diet, With GrainLimited Ingredient Diet, Pea-Free, Veterinary Diet...
Food FlavorChicken, PoultryRabbit, MeatChicken, PoultryChicken, PoultryChicken, Poultry
Health FeatureUrinary Tract HealthSkin & Coat Health, Digestive HealthDiabetic Support, Weight Management, Digestive HealthHeart CareSkin & Coat Health, Digestive Health, Weight Management

About This Item


  • A veterinary-exclusive dry dog food for dogs with urinary health concerns.
  • Helps dissolve pure struvite stones and helps prevent calcium oxalate stones.
  • Lowers the risk of crystal formation using RSS methodology for bladder health.
  • Supports urinary health with an exclusive S/O Index, and creates an environment unfavorable to crystal formation in the bladder.
  • Helps prevent struvite stones from reoccurring.

See More

Nutritional Information

Feeding Instructions


Play Video: Learn More About Royal Canin Veterinary Diet From Our Team of Experts
Learn More About Royal Canin Veterinary Diet From Our Team of Experts

About Royal Canin Urinary Health for Dogs

Worried About Your Dog’s Urinary Health?

Your veterinarian is the expert on your dog’s health, so you should always consult with this trusted advisor to find the best urinary health solutions for your pet. Royal Canin works closely with veterinarians to develop dog formulas that support urinary tract and bladder health.

How Can Nutrition Help?

Your veterinarian may recommend a Royal Canin Urinary dog food formula for your best friend. These special formulations can:

Dilute Urine

This helps your dog urinate more often, which can help minimize time for stones to form.

Lower RSS

RSS methodology predicts urine crystallization and is used to develop diets that reduce the risk of stone formation.

Maintain Balance

A precise mineral balance can also help prevent stones from forming.

Set Up Autoship for Consistent Delivery

Last-minute dietary changes can sometimes upset your pet’s stomach. Set your Royal Canin pet food order to Autoship to keep feeding on track and avoid unwanted disruptions.

About Royal Canin

What sets Royal Canin apart is their close collaboration with veterinarians. Through these professional partnerships, they strive to learn everything they can about pet health, including how different formulas perform for different breeds, sizes, lifestyles and therapeutic conditions. Ongoing research and development allows Royal Canin to keep providing the precise nutrition dogs need for a range of medical conditions.

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Questions & Answers

37 Customer Questions

I see that this product has corn ,corn gluten meal and wheat gluten. Please let me know if this is bad for my dogs stomach and does these products have any effects on her life span?

Do you carry this for small dogs
Answer by ChewyJun 13, 2018
Royal Canin does offer a small breed formula called Royal Canin Veterinary Diet Urinary SO Small Breed Dry Dog Food.

Hi I just want to know if this food is grain free??? My dogs love it but they scratch and chew at there selves all day long. When will it be available grain free????
Answer by ChewyMar 26, 2018
This formula contains grains.

Does this food increase urination in your dog? If so, is that healthy?
Answer by ChewyJan 04, 2018
This Food is a complete and balanced Veterinary Diet for adult dogs formulated to aid in the nutritional management of calcium oxalate and struvite urolithiasis. Increasing the urine volume simultaneously reduces the saturation of urine with calcium oxalate and struvite crystals.

ReviewsWrite a Review

Rated 4.6781 out of 5 stars
1280 Reviews
Would recommend to a friend

1280 Customer Reviews

Rated 5 out of 5 stars
By Zero on Nov 16, 2022

Back to normal

Zero's bladder stones were first noticed when Zero peed on snow and blood came out. The vet did blood work and an X-ray to identify the location of the stones. Zero was prescribed this diet. Zero's bladder stones went away completely. Zero doesn't love the food, and honestly it smells like cheez its. My dog is NOT food motivated and only gets excited about human food (mostly fresh cooked salmon or chicken) so we sprinkle a little on his meals to make him eat it. PLUS he's also Prozac and an allergy pill, so you knowwww he isn't going to eat his plain urinary food and pills as a topper. He needs human food and it's inconvenient as heck (esp when we take him camping).... Anyway, I highly recommend this product if your dog has urinary stones AND if it's prescribed by your doctor. I took zero in a few weeks later for a urine sample and he was clear of all blood!! The stones were small enough to pass thru his body naturally. the alternative was surgery to remove the impassably large stones

Rated 5 out of 5 stars
By DonnaS on Jan 4, 2023

Yea Chewy!

Royal Canin SO is a high quality dog food that was recommended by our vet for our dog that kept getting uti's. It seems to work well, and she eats it well. It is a little pricey, but there are not very many foods made to help prevent uti's...and much cheaper that continued visits to the vet & prescriptions. We order it from Chewy & it's very convenient to have it delivered to our home, as we get the large bags.

Rated 5 out of 5 stars
By Dexter on Jan 23, 2023

Tasty & Satisfying!

I require this food as I have history of bladder stones. I do not mind because it is delicious . I recommend it for all dogs that may have this tendency in their breed. Ask your family to talk to your Vet.

Rated 5 out of 5 stars
By SheltieMama on Nov 27, 2022

Vet Recommended

I am an old dog trainer and get alerts from the Dog Food Advisor so I can keep up to date on what's happening w/ dog food and ingredients, recalls, etc. My vet initially told me to get another brand for kidney/bladder support and while it works ok, that brand to me and most of my vet friends, is not as good. So I recently asked my present vet if I could to to Royal Canin and he agreed. Now I feel very happy about what I am feeding my dear elder sheltie, who (yes, WHO, not it!) is also my retired dog guide.

Rated 5 out of 5 stars
By Keri on Jan 1, 2023

Came fast

My vet was out of this and even Royal canon themselves had it on back order. Was so glad chewy had some in stock. Uploading script was super easy. Was told it would t come until after Christmas, but is came in 2 days!!! So happy! Thanks chewy!

Rated 5 out of 5 stars
By Wendy on Jan 5, 2023

Awesome Product!

My grandpuppy has bladder stones and after using this product for little over a year his stones have reduced from 5 to 2!! Have had surgery in the past and tried to find something that helps and this product has. Thank you!!

Rated 5 out of 5 stars
By Izzy on Jan 2, 2023

Outstanding service

When the dog food that we purchase was out of stock chew sent a substitute that was more expensive but did not charge the difference without even being asked to. Their customer service is outstanding. Thanks Chewy!

Rated 1 out of 5 stars
By Sarah on Jan 2, 2023

Royal Canin Veterinary Diet

My small dog has to take this bc of struvite crystals. been buying smaller kibbles in the past but bought this by mistake. noticed the mistake when I opened bag and saw larger kibbles.

Rated 5 out of 5 stars
By Scott on Dec 4, 2022

Great Service

The products and service at Chewy has always been top notch. And, about a year and a half ago, when one of our beloved pets passed away, they sent us flowers. A wonderful and unexpected gesture. A great company, and shipping is always very fast.

Rated 1 out of 5 stars
By SueV on Nov 27, 2022

not happy

wish I never gave this to my dog, vet recommended this, my dogs symptoms after mixing this with her regular food for about 4 days got worse. And she had diarrhea from this. This is a nightmare, wish I could go back in time and not feed her this.