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Royal Canin Veterinary Diet Multifunction Urinary SO + Calm Dry Cat Food, 6.6-lb bag

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At a Glance

  • Veterinary Diet
  • Urinary Tract Health
  • Calming
  • Adult

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($11.06 /lb)
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About This Item

Details

  • A dry cat food designed to increase urine volume and support your feline friend’s urinary tract and bladder health.
  • This diet is specially formulated by veterinarians—with nutrients that help kitties cope with everyday stressors.
  • Supports your cat’s hydration by encouraging her natural drinking behavior, helping to dilute her urine.
  • Exclusive S/O Index promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals.
  • Provides a specialized diet with moderate calorie content, 8% less than Feline Urinary SO dry, to help maintain ideal weight.

Ingredient Information

Feeding Instructions

Precise Nutrition for Targeted Care

Royal Canin Veterinary Diets support a wide range of feline 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 cats with unique dietary requirements.

Flexible Solutions for Your Cat’s Needs

Our veterinary diets are designed for both short-term therapeutic use and long-term maintenance, depending on your cat’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

Where on the package does it say reduced calorie?

Answer by Chewy • Aug 11, 2025
This formula does not have a reduced calorie content. It contains 338kcal per cup which is an average caloric content for most diets by Royal Canin.

Do you have the selected canned food in a pate?

Answer by Chewy • May 06, 2026
Royal Canin does not offer the Multifunction Urinary SO + Calm Formula as a pate.

Does this require a prescription from the vet?

Answer by Chewy • Apr 22, 2026
Yes, the Royal Canin Veterinary Diet Multifunction Urinary SO + Calm Dry Cat Food requires a prescription from your veterinarian.

What is the zinc content?

Answer by Chewy • Apr 16, 2026
The Royal Canin Veterinary Diet Multifunction Urinary SO + Calm Dry Cat Food contains 48.2mg zinc per 1000 kcal of food or 0.02% zinc on an as fed basis as well as dry matter basis.
Reviews
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4.7
Rated 4.7 out of 5 stars
268 Ratings
Terms & Conditions

Customers Mention

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

Digestibility

89% Positive

Ingredient Quality

93% Positive

Nutritional Content

89% Positive

Palatability

83% Positive

93 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
By Robert on Oct 22, 2025

Cali isn’t peeing on furniture anymore!

The vet found nothing physically wrong with Cali. She thought it was a behavioral issue. Cali would pee on the bed, on living room furniture and on rugs. We put

The vet found nothing physically wrong with Cali. She thought it was a behavioral issue. Cali would pee on the bed, on living room furniture and on rugs. We put aluminum foil on the sofas and angled pillows on our 2 recliners to keep Cali off. She just turned 10 recently. The vet finally recommended getting an extra kitty litter box, and getting her the Royal Canin Multifunction Urinary SO + Calm Dry cat food, and since starting her on this food and getting an extra kitty litter box, Cali has not peed anywhere except the litter boxes (her regular one and the new one. What a relief!

Rated 3 out of 5 stars
By Heather on Aug 29, 2025

Tasty, but caused allergic reaction

It's hard for me to rate this. It seems like a good product, but it didn't work for my cat, hence the three stars. I purchased this because one of the other vet-prescribed

It's hard for me to rate this. It seems like a good product, but it didn't work for my cat, hence the three stars. I purchased this because one of the other vet-prescribed foods was giving my poor fells the runs. My cat seemed happy with the switch. He ate the Royal Canin SO Calm enthusiastically. However, he seemed to have an allergic reaction to it. After eating it for a week or so, he began scratching obsessively and licking off patches of his fur--bad enough that I took him to the vet. Since stopping the food and putting him on a new food--yet another prescription brand--he's been returning to normal. Needless to say, I won't feed him this food any longer. Other observations-- I appreciate the information provided on the back of the bag. It's really detailed and complete in terms of helping you figure out how much to feed your kitty. It offers amounts in volumetric and weight measurements. It also gives amounts for using soft food alongside hard food. I wish other manufacturers were as thorough. The bag is sturdy. I didn't need to decant the food into another container because the zipper closure didn't degrade at all. I appreciate the high-quality packaging. Maybe relevant to other potential buyers: We sometimes put dry food in the Catit treat ball, and this kibble is a little too big for the food to come out of the ball easily. Kitty wasn't too happy about that. It will still come out of the ball, but it takes more work on his part. He can be lazy, haha.

Rated 5 out of 5 stars
By Michelle on Dec 29, 2025

Stopped bad behavior too!

My cat had a urinary block that cost quite a bit to unblock. He is only 2 years old. A vet tech who is also a good friend recommended this brand. Freddy, my cat,

My cat had a urinary block that cost quite a bit to unblock. He is only 2 years old. A vet tech who is also a good friend recommended this brand. Freddy, my cat, also has a lot of anxiety so I thought it might be a good idea. Since about 3 days into this food he has stopped pooping outside the litter box, which was a daily occurrence. No urinary blockage. Win win!

Rated 5 out of 5 stars
By Brenda on May 21, 2026

She is adjusting.

She doesn’t like it unless we add her treats to it 3 to be exact But when you had Sheba lol. She is calmer now and hopefully her kidneys will be better too

She doesn’t like it unless we add her treats to it 3 to be exact But when you had Sheba lol. She is calmer now and hopefully her kidneys will be better too. Thx for having such great folks working for you . Your blessed x Happy Memorial Day , Salute with Graditude to your Veterans there.

Rated 5 out of 5 stars
By Robin on Apr 21, 2026

arrived very fast!!!!!

My cat was diagnosed with lower urinary tract inflammation, he was to the vet 3 times with no improvement. He was prescribed Urinary SO and gabapentian for the

My cat was diagnosed with lower urinary tract inflammation, he was to the vet 3 times with no improvement. He was prescribed Urinary SO and gabapentian for the pain and has improved so much! Thanks for getting me his special diet so fast to help him get better

Rated 5 out of 5 stars
By Skylar on Nov 11, 2025

10/10 Treatment

My cat had to go to the vet for uncontrollable urinating problems. He would go to the litter box every few minutes and would urinate on towels or objects in the

My cat had to go to the vet for uncontrollable urinating problems. He would go to the litter box every few minutes and would urinate on towels or objects in the house. Took him to the vet and they recommended this food for him and he has not had any problems since. The 6.6lb bag takes my cat 6 weeks to go through and he eats twice a day!

Rated 5 out of 5 stars
By Karalyn on Feb 5, 2026

Immediate relief for our sick kitty

Our sweet male cat has a history of UTIs and near-blockages. He was recently diagnosed with lower urinary tract disease after a very scary bladder flare up. Within

Our sweet male cat has a history of UTIs and near-blockages. He was recently diagnosed with lower urinary tract disease after a very scary bladder flare up. Within a week on this food, he’s like a different cat. His bladder looked perfect at his recheck and he’s happy, comfortable and zooming around like nothing happened.

Rated 5 out of 5 stars
By Lillian on May 24, 2026

Great prescription food

My Highlander male has to be on this food due to a urinary blockage. It's highly palatable - he eats it right up. My other cat also thinks this food is delicious,

My Highlander male has to be on this food due to a urinary blockage. It's highly palatable - he eats it right up. My other cat also thinks this food is delicious, so I have to prevent him from eating it... but I guess that's proof that cats love this food. We haven't had any issues with blockages or UTIs since starting this food.

Rated 5 out of 5 stars
By Farrah on Oct 18, 2025

Cosmo litter box behavior improved significantly

Cosmo has had urinary issues since he was born, which ultimately led to surgery after a stone obstruction. He was still having discomfort with urination because

Cosmo has had urinary issues since he was born, which ultimately led to surgery after a stone obstruction. He was still having discomfort with urination because he ran out of his box every time he went potty. The vet said there was no infection and recommended this food to calm his bladder. He's done amazing ever since I put him on this food.

Rated 5 out of 5 stars
By Sofia on Nov 2, 2025

Great food!

This food has helped our cat stop peeing everywhere after he was diagnosed with Feline Idiopathic Cystitis, it took a few weeks to work but he hasn't had an accident

This food has helped our cat stop peeing everywhere after he was diagnosed with Feline Idiopathic Cystitis, it took a few weeks to work but he hasn't had an accident since! I love that Chewy carries the 17.6 lb bag, it's hard to find elsewhere.