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

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At a Glance

  • Veterinary Diet
  • Urinary Tract Health
  • Sensitive Skin
  • Adult
  • All Breeds
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($6.65 /lb)
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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

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

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.

Shop Royal Canin

Frequently bought together

Questions & Answers

8 Customer Questions

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

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

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

Answer by Chewy • Nov 18, 2025
At this time, this product only comes in the 7.7 lb and 17.6 lb bags.

Is there one without chicken? My dog is allergic

Answer by Chewy • Jul 10, 2026
The Royal Canin Veterinary Diet Multifunction Urinary SO + Hydrolyzed Protein Dry Dog Food contains chicken fat in their ingredient list, and there isn't other flavor options at this time. It is recommended to consult your veterinarian to ensure this if the food is suitable for your pet.

What is the max percentage of fat for this food?

Answer by Chewy • Jul 06, 2026
The Royal Canin Veterinary Diet Multifunction Urinary SO + Hydrolyzed Protein Dry Dog Food contains 14.27% Fat As Fed, which also counts for the maximum fat content.
Reviews
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4.7
Rated 4.7 out of 5 stars
283 Ratings
Terms & Conditions

Customers Mention

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

Ease of Use

90% Positive

Effectiveness

91% Positive

Ingredients

89% Positive

Long-Term Benefits

87% Positive

86 Customer Reviews

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

Rated 5 out of 5 stars
Verified Purchase
By Amy on Oct 20, 2025

Cleared up lots of bladder stones

So grateful for this food. Our dog had a belly full of bladder stones shown in an xray in July and our vet put her on this food because she also has gi issues and

So grateful for this food. Our dog had a belly full of bladder stones shown in an xray in July and our vet put her on this food because she also has gi issues and used to need an rx food for that. We were thinking we'd need to have surgery because of the amount of stones, but we had her checked in mid October and they are gone. Cannot believe it and I'm so grateful this saved her from having surgery. She also loves the taste of it and gained 4 lbs from it... So we are watching her intake now. Vet said this was normal for urinary rx food.

Rated 5 out of 5 stars
Verified Purchase
By Joleen on Jun 2, 2026

Wonderful product.

Our Australian Shepherd recently had surgery to remove quite a few struvite bladder stones. A prescription diet was recommended for her. We had concerns due to her

Our Australian Shepherd recently had surgery to remove quite a few struvite bladder stones. A prescription diet was recommended for her. We had concerns due to her very serious chicken allergy. However,this hydrolyzed protein formula has worked wonderfully for her. She likes the food and no allergy issues. She also likes the treats of the same formula. We’re pleased that she enjoys this food,as she’ll need a prescription diet for life.

Rated 4 out of 5 stars
Verified Purchase
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 5 out of 5 stars
Verified Purchase
By Maria on Jan 1, 2026

Works well even with chicken allergy

Veterinarian suggested this even tho piggy has chicken allergy for her bladder stone. The way the chicken is freez dried in this formula, it does not effect her

Veterinarian suggested this even tho piggy has chicken allergy for her bladder stone. The way the chicken is freez dried in this formula, it does not effect her , she has no chicken allergy from this. She likes the taste and I believe it is helping her condition.

Rated 5 out of 5 stars
Verified Purchase
By Colleen on Sep 5, 2025

So Fast & Convenient

I’m so glad you’re carrying this food now! My dog was on a prescription diet previously and I got it through you. When she had to change to the multi function food

I’m so glad you’re carrying this food now! My dog was on a prescription diet previously and I got it through you. When she had to change to the multi function food I was disappointed that you didn’t carry it. Now that you are I know I can get it quickly and easily. It’s amazing how fast I get your deliveries. It’s just a matter of 2-3 days from “Review your Auto Ship” to having it at my door. I really appreciate that!

Rated 5 out of 5 stars
Verified Purchase
By Amy on Aug 11, 2025

Quick and easy

Exactly what I needed, with easy vet contact for presciption and delivered Right to the front door.

Exactly what I needed, with easy vet contact for presciption and delivered Right to the front door.

Rated 5 out of 5 stars
Verified Purchase
By JoAnn on Sep 18, 2025

Excellent Customer Service

Anyone I talk to is always very friendly and helpful. I appreciate the way the agents treat me like I’m their friend. I hope they are paid well and recognized

Anyone I talk to is always very friendly and helpful. I appreciate the way the agents treat me like I’m their friend. I hope they are paid well and recognized.

Rated 5 out of 5 stars
Verified Purchase
By jennifer on Dec 30, 2025

Ridding Ruby of kidney stones

We are using this product in hopes of dissolving RubY’s kidney stones . We adopted her from our local shelter she was their longest resident

We are using this product in hopes of dissolving RubY’s kidney stones . We adopted her from our local shelter she was their longest resident

Rated 3 out of 5 stars
Verified Purchase
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 3 out of 5 stars
Verified Purchase
By Kitty on Jun 23, 2026

Pros and cons

This dog food was prescribed by my pups vet because she has bladder stones. She doesn’t hate it, but isn’t a fan of it either and begrudgingly eats it. It has

This dog food was prescribed by my pups vet because she has bladder stones. She doesn’t hate it, but isn’t a fan of it either and begrudgingly eats it. It has helped with her stones as far as I can tell as she is no longer urinating blood. We go for a follow up xray in August. Unfortunately, the con to this food is she has gained some skin issues from it. She is very flakey, itchy, and is starting to get scaly patches on her face and chest. She has a chicken allergy but we’re assured because it was hydrolyzed it was supposed to alleviate the allergy, but for her it’s not the case. I really wish there was an S/O out there that didn’t have any chicken related ingredients. So far I haven’t found it, even if it’s beef or fish, there is some form of chicken product in the ingredients. =_= We will keep on this for now, as our only other course of action is homemade.