ROYAL CANIN VETERINARY DIET Adult Urinary SO Dry Dog Food, 6.6-lb bag -

Royal Canin Veterinary Diet Adult Urinary SO Dry Dog Food

By Royal Canin Veterinary Diet
Rated 4.649 out of 5 stars
Veterinary Diet Item
Lifestage: Adult
Lifestage: Adult
Size: 6.6-lb bag
Size: 6.6-lb bag

$41.99Chewy Price
$39.89Autoship Price
(Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.
This item requires vet authorization.

In Stock
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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.

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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 4.649 out of 5 stars
1305 Ratings
Would recommend to a friend

1305 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 4 out of 5 stars
By Meagan on Apr 15, 2023

Only one complaint

My dog enjoyed this food, and it did its job of dissolving struvite crystals. However, I didn’t feel comfortable feeding this food long term as it is preserved with citric acid. When used as a preservative in dry food, citric acid increases the risk for GDV/bloat (Purdue University study). My dog is a Standard Poodle, so he’s already an at risk breed. We fed this food when we had to, but took him off of it after a month. He’s also battled frequent UTIs in addition to 2 instances of struvite crystals, so we are back on Royal Canin SO to see if it helps. The only difference is this time I’m feeding him the canned formula. Both the dry and canned formulas appear to work equally well, but the canned formulas also have the added bonus of providing him with more liquid in his diet which I’m sure helps a little more.

Rated 4 out of 5 stars
By BillS on Apr 25, 2023

Vet recommended

Our vet recommended this for our puppy for a small health issue. problem is that this dog food actually requires a vets prescription to get and as you can imagine a price to match that. None of our local stores carry this, but this is where Chewy shines. They talk to the vet so we don't have to and auto delivery helps us manage when a new bag arrives, plus we get a small discount with auto delivery. We have two dogs and they are transitioning from their old dog food to this and so far seem to like it.

Rated 5 out of 5 stars
By Food on Apr 19, 2023

Go to Brand / Food

Tried this brand out for both of dogs to help aide / prevent medical issues and I’m never going back to any other brand - regardless of the dog! Unless I have to of course. Royal Canin not only helps my pug with his urinary issues but it also stopped his shedding and weight gain! We add a little broth to it to soften the food and he scours it up every time. Love everything about it - highly recommended to everyone!

Rated 5 out of 5 stars
By Bill on Apr 22, 2023

He likes it

My dog had to start eating this urinary food. He gets the wet and the dry food. He’s a very finicky eater so I thought I’d never get him to eat either one. To my surprise he loves the wet and the dry food. It’s expensive but he has to have it so I’m glad he likes it.

Rated 5 out of 5 stars
By GlennK on Apr 22, 2023

Very Surprised

My 120+ lb picky eater female Bullmastiff loves the stuff. And it seems to be working preventing her from getting UTIs. It’s expensive food but I guess it’s a wash vs vet bills every 2-3 months for UTI treatment.

Rated 5 out of 5 stars
By Patti on Mar 26, 2023

Never an issue

I've been using Chewy for years. I've worked at rescues and seen the hugely generous donations from them. I've received birthday cards : ) But mainly, I've never received a less than fresh, solid or fast delivery. I always encourage other pet people in my life to use Chewy. It's just smart. And easy.

Rated 5 out of 5 stars
By Clair22 on Mar 28, 2023

Gemma loves it!

Gemma had surgery to remove bladder stones and our vet recommended Royal Canin Urinary SO. She readily eats it and really likes it. Yay! Only issue we have with it is the price. Expensive, but necessary to keep Gemma healthy.

Rated 1 out of 5 stars
By ZAPsMommy on Mar 31, 2023

Find any other food

This food has nearly killed my dog. Caused severe GERD and he vomits, coughs, hacks, has diarrhea and nausea. The only change has been the food. i do not recommend. the smell is putrid too.

Rated 5 out of 5 stars
By Pat on May 24, 2023

Special dog food

It’s so nice to have this fog food automatically shipped to us, it will make it so much easier

Rated 5 out of 5 stars
By Steven on Mar 2, 2023

Best service and products!

I cannot say enough good things about Chewy and their products and service. From the ordering to shipping to receiving it all happens so quickly and efficiently. They even contact my veterinarian for me which is a huge help!