Royal Canin Veterinary Diet Adult Calm Dry Cat Food, 8.8-lb bag

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About This Item

Details

  • Royal Canin Feline Calm Dry Cat Food is a veterinary-exclusive formula that is made for cats that may be feeling uneasy in new environments and situations, and it helps support urinary sensitivities and digestive health.
  • Calming nutrients like hydrolyzed milk protein can help in the management of cats exhibiting fearful behaviors in stressful environments and social situations.
  • With a precise blend of fibers, this adult cat food helps hairs pass through your cat’s digestive system and into her stool.
  • Royal Canin Cat Calm dry food helps support your cat’s skin’s natural protective barrier for optimal feline skin health.
  • This cat calming food has the exclusive S/O Index, which promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals.

Ingredient Information

Feeding Instructions

FAQ

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 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.

Shop Royal Canin

Questions & Answers

28 Customer Questions


In the detailed description it says thus contains the urinate S/O formula. So is this the calm+urinary. I’m confused.

Answer by ChewySep 18, 2020
This formula is the Royal Canin Veterinary Diet Calm Formula Dry Cat Food. The Royal Canin Urinary S/O Index® is included in this recipe to prevent the formation of harmful crystals and promote a healthy urinary system.

Does this food require a prescription?

Answer by ChewyMar 12, 2024
Because this diet is formulated for medical issues, veterinary authorization is needed to advise you on the best way to give them to your pet and to monitor your pet's health while they are on the diet.

How many cups are in the 4# bag and 8# bag?

Answer by ChewySep 04, 2021
There are approximately 4 cups of food per pound.

On a dry matter basis, please provide the percentage of carbs, protein, phosphorus, and sodium.

Answer by ChewyJan 31, 2020
On a dry matter basis, this recipe has a carbohydrate content of 35.19%, a protein content of 36.5%, a phosphorus content of 1.01%, and a sodium content of 0.71%.

4.6
Rated 4.6 out of 5 stars
948 Ratings

Customers Mention

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

Digestibility

83% Positive

Ingredient Quality

88% Positive

Nutritional Content

85% Positive

Palatability

88% Positive

499 Customer Reviews



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

Rated 2 out of 5 stars
By Monica on Dec 24, 2025

Cats Loved It, No Effect Except Ultra Stinky Poo

Like others have mentioned, my 4 cats loved eating it, but I didn’t see any changes in anxiety levels. I had them on the food for about 3-4 months, too. Unfortunately,

Like others have mentioned, my 4 cats loved eating it, but I didn’t see any changes in anxiety levels. I had them on the food for about 3-4 months, too. Unfortunately, it also made all their poo smell absolutely terrible, no matter which litter I used. Due to the price and the lack of positive results, I’ll be discontinuing.


Rated 5 out of 5 stars
By Mary on Dec 28, 2025

Only food my cat can eat

I am so thankful to royal canin for making this food as it is the only food my cat can eat. There are only 2 urinary blend foods and the other one makes my cat sick

I am so thankful to royal canin for making this food as it is the only food my cat can eat. There are only 2 urinary blend foods and the other one makes my cat sick unfortunately. My cat has eaten this food for about 5 years and my cat hasn’t had any uti’s since.


Rated 5 out of 5 stars
By Carla on Nov 4, 2025

Total game changer

My adopted cat suffers from episodic feline idiopathic cystitis triggered by stress. Once it is triggered, she will urinate inappropriately. I knew she had a history

My adopted cat suffers from episodic feline idiopathic cystitis triggered by stress. Once it is triggered, she will urinate inappropriately. I knew she had a history of stress peeing when I adopted her but her previous vet didn’t realize it was FIC. One trip to my vet solved the mystery. She was given a single dose of Cerenia and I introduced her to this Calm formula dry food. A friend recommended the food after having great success with their own cat, so I gave it a try. I also started using calming diffusers. I kid you not, she became an entirely different cat within a couple of days. Eventually, I tapered off the diffusers but she continues to have her prescription diet. She is odd in that she does not like any wet food, so dry it is with puree Nulo snacks and a water fountain she loves. She has not had a FIC episode since!


Rated 5 out of 5 stars
By Duanna on Jan 15, 2026

It actually keeps them calm!

I used this to introduce two middle aged cats. Along with keeping them separate through a gate and eventually together I used the treats and the spray especially

I used this to introduce two middle aged cats. Along with keeping them separate through a gate and eventually together I used the treats and the spray especially at night so we can all rest at ease!


Rated 5 out of 5 stars
By Grace on Dec 11, 2025

Saves my cats life

My cat chowder bean has an autoimmune condition that mainly is triggered by stress. If he did not have this food I truly believe he wouldn’t still be around. It’s

My cat chowder bean has an autoimmune condition that mainly is triggered by stress. If he did not have this food I truly believe he wouldn’t still be around. It’s helped so much with his flares, keeping him nice and calm, and he loves the taste!


Rated 2 out of 5 stars
By Steven on Jan 4, 2026

Doesn't calm

This food didn't work for us. They ate it but no calming. Two of my cats have a problem with each other and i thought i would give it a shot. I gave it 2 stars because

This food didn't work for us. They ate it but no calming. Two of my cats have a problem with each other and i thought i would give it a shot. I gave it 2 stars because they ate it.


Rated 5 out of 5 stars
By Mea on Jan 15, 2026

Great shipping time

Item arrived within 3 days thankfully because my poor cat was out and so was all the surrounding vets that carried this particular food

Item arrived within 3 days thankfully because my poor cat was out and so was all the surrounding vets that carried this particular food


Rated 4 out of 5 stars
By Patricia on Jan 14, 2026

Positive results

Buddy is a recent rescue cat. He was biting & scratching with misplaced aggression. My vet prescribed CALM. It did help to calm him.

Buddy is a recent rescue cat. He was biting & scratching with misplaced aggression. My vet prescribed CALM. It did help to calm him.


Rated 5 out of 5 stars
By Jackie on Dec 9, 2025

Works great!

This 100% made each cat calm without question, so much so that I needed to mix it with their other food so they can still get some running around in throughout the

This 100% made each cat calm without question, so much so that I needed to mix it with their other food so they can still get some running around in throughout the day!


Rated 5 out of 5 stars
By karen on Dec 3, 2025

Prescription food for Piper

I have a cat, piper, that is extremely picky, nibbles here and there. Shes very petite, but not gaining weight. Vet recommended this food, and she loves it! Only

I have a cat, piper, that is extremely picky, nibbles here and there. Shes very petite, but not gaining weight. Vet recommended this food, and she loves it! Only thing she eats!