Royal Canin Veterinary Diet Multifunction Urinary SO + Hydrolyzed Protein Dry Dog Food, 17.6-lb bag

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About This Item

Details

  • Dry dog food for your furry friend with urinary issues and food sensitivities.
  • Exclusive S/O Index promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals.
  • Supports gastrointestinal and skin health with highly digestible hydrolyzed protein composed of low-molecular-weight peptides.
  • Formulated to support the skin’s natural protective barrier for optimal skin health in adult pups with skin sensitivities.
  • Serve as a complete and balanced meal or mix with Royal Canin wet dog food (sold separately) for added variety and hydration; consult your vet to ensure this is suitable for your pet.

Ingredient Information

Feeding Instructions

Precise Nutrition for Targeted Care

Royal Canin Veterinary Diets support a wide range of canine health needs, from acute to chronic conditions, with tailored nutrition for digestive, urinary, renal, skin, and other health concerns.

Support Their Health with Nutrition

Over half of pets face health issues each year. Our unique nutritional formulas can help support their therapeutic needs.

Care for Optimal Outcomes

Our diets are enriched to stimulate appetite and provide complete, balanced meals, supporting recovery, health management, and overall well-being for dogs with unique dietary requirements.

Flexible Solutions for Your Dog’s Needs

Our veterinary diets are designed for both short-term therapeutic use and long-term maintenance, depending on your dog’s condition and recovery progress.

About Royal Canin

For over 55 years, Royal Canin has been scientifically observing pets to gain a richer understanding of their health needs, to develop precise nutrition for every stage of their lives.

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Questions & Answers

4 Customer Questions


When will the 7 lb bag be available?


Is there a canned food option to mix with the dry food?

Answer by KscheckMar 09, 2026
No, not right now. Currently only kibble is an option for Urinary SO Hydrolyzed Protein.

Can I upload my prescription here

Answer by ChewyMar 09, 2026
To upload your prescription for Royal Canin Veterinary Diet Multifunction Urinary SO + Hydrolyzed Protein Dry Dog Food, after you place your order, head over to your Order History. Just click on the order with the item that needs approval, and you’ll see the “Upload Authorization” option ready for you there.

Is there an option to stock bags larger than 17 lbs?

Answer by ChewyNov 18, 2025
At this time, this product only comes in the 7.7 lb and 17.6 lb bags.
4.7
Rated 4.7 out of 5 stars
180 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

90% Positive

Effectiveness

90% Positive

Ingredients

89% Positive

Long-Term Benefits

90% Positive

64 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 3 out of 5 stars
By Mary on Mar 23, 2026

Toomuch

My dog has to be on this Vet diet but he hates it. At first he was ok but after a week the novelty wore thin. The wet canned version is TOO expensive and the dry

My dog has to be on this Vet diet but he hates it. At first he was ok but after a week the novelty wore thin. The wet canned version is TOO expensive and the dry version has morsels too small for my 80 lb. dog's liking. I have to coax him and add water get him to eat half of what he should. Given he can't eat anything else with it ...it's a real struggle. We shall see on a couple weeks if the urinary SO is working/helpful


Rated 5 out of 5 stars
By Jana on Feb 15, 2026

Finally!!!

After trying several foods for our German Shepherd mix puppy, the vet recommended this to help manage the stools and his digestion of protein. It worked!!! Not only

After trying several foods for our German Shepherd mix puppy, the vet recommended this to help manage the stools and his digestion of protein. It worked!!! Not only does the SO keep him from having crystals, the hydrolyzed keeps him regular and perfect stools! Turns out he is an allergy dog and this is really the only way he can digest the protein he needs.


Rated 5 out of 5 stars
By Ila on Mar 24, 2026

The convenience!

It has really helped my 9 year girl! She had crystals in her urine and the vet was concerned they would turn to bladder stones. Since Haddie has been on this food,

It has really helped my 9 year girl! She had crystals in her urine and the vet was concerned they would turn to bladder stones. Since Haddie has been on this food, no more crystals! We’re all very thankful!


Rated 4 out of 5 stars
By Jean on Jan 25, 2026

That it was available for my dog

She likes it .. is eating it. Drinking a lot more water as it is dry.. she ate CD Hill wet food since she had bladder stones about 8 years ago. I suspected it

She likes it .. is eating it. Drinking a lot more water as it is dry.. she ate CD Hill wet food since she had bladder stones about 8 years ago. I suspected it was her food that aggravated her allergy resulting in constant itching that caused inflammation and sores on her skin.. yeast.. and misery. She needed antibiotics.. anti fungal and steroids for relief. I pray this food will help her.


Rated 4 out of 5 stars
By Sasha on Feb 19, 2026

THIS FOOD REALLY WORKS!!!

This Dog Food has changed my pets life he no longer suffers from horrible allergy’s & stones I’ve always been against food in a bag, but this stuff does its job

This Dog Food has changed my pets life he no longer suffers from horrible allergy’s & stones I’ve always been against food in a bag, but this stuff does its job. The only issue is it’s always sold out.. Lol so must be working but I need my orders!!!


Rated 1 out of 5 stars
By Debbi on Jan 14, 2026

My dog smelled it and walked away

My dog smelled it walked away and hasn’t touched it!!! I have tried moistened it with warm water even went as far as bone broth Nothing a big let down he is suffering

My dog smelled it walked away and hasn’t touched it!!! I have tried moistened it with warm water even went as far as bone broth Nothing a big let down he is suffering and I am getting advice from specialist and this doesn’t even have a chance cuz he digging won’t eat it !! Not to mention this special diet crsp isn’t cheap and you can not get a sampler to see if your fur baby will even it which is ridiculous in my book


Rated 5 out of 5 stars
By Niree on Mar 24, 2026

Short lived!

My 2year old Yorkiepoo loved this food. She was on it while being treated for a uti and bladder stones. This is the only dry food she has ever enjoyed

My 2year old Yorkiepoo loved this food. She was on it while being treated for a uti and bladder stones. This is the only dry food she has ever enjoyed


Rated 1 out of 5 stars
By pam on Feb 28, 2026

Delivery

We have a very long driveway and request that all orders be delivered to the home, not at the road on the end of the drive. Please make note that all shipments

We have a very long driveway and request that all orders be delivered to the home, not at the road on the end of the drive. Please make note that all shipments be left on the covered front porch.


Rated 5 out of 5 stars
By Judy on Mar 27, 2026

My dog does really well on this prescription dog food

I really appreciate the ease of ordering online and how quickly I get it. My dog does really well on this royal Canaan prescription dog food.

I really appreciate the ease of ordering online and how quickly I get it. My dog does really well on this royal Canaan prescription dog food.


Rated 5 out of 5 stars
By Marsha on Mar 24, 2026

Glad Chewy is finally carrying this PrescriptIon Food!

This food is needed for our dog who in addition to a Hydrolyzed diet needs the SO formula to prevent bladder stones/infections.

This food is needed for our dog who in addition to a Hydrolyzed diet needs the SO formula to prevent bladder stones/infections.