ROYAL CANIN VETERINARY DIET Adult Calm Dry Cat Food, 4.4-lb bag -

Royal Canin Veterinary Diet Adult Calm Dry Cat Food

By Royal Canin Veterinary Diet
Rated 4.5517 out of 5 stars
Veterinary Diet Item

$42.99Chewy Price
$40.84Autoship Price
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About This Item


  • A veterinary-exclusive formula for cats during periods of adaptation that may be experiencing digestive upsets, skin irritations, or urinary sensitivities related to stressful situations.
  • Hydrolyzed milk protein and L-tryptophan promote calming of your cat’s fearful behaviors in stressful situations or environments.
  • A precise blend of fibers helps ingested hairs pass through your cat’s stool.
  • Targeted amounts of B vitamins and amino acids reinforce the skin barrier to support skin and coat health.
  • This diet has the exclusive S/O Index, which means it promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals.

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Nutritional Information

Feeding Instructions


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

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Top IngredientsNew: Chicken By-Product Meal,  Corn,  Brewers Rice...Chicken By-Product Meal,  Corn,  Wheat...Chicken By-Product Meal, Brewers Rice, Corn...Brewers Rice, Corn, Wheat Gluten...Chicken By-Product Meal, Powdered Cellulose, Tapioca...
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Food FlavorChicken, PoultryChicken, PoultryChicken, PoultryChicken, PoultryChicken, Poultry
Health FeatureCalming, Digestive HealthWeight ManagementDental & Breath CareKidney CareWeight Management

Questions & Answers

24 Customer Questions

Does this food require a prescription?
Answer by ChewyJun 09, 2021
Because Royal Canin Veterinary Diet Calm Formula Dry Cat Food is formulated for medical issues, veterinary authorization is needed.

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%.

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.

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.

ReviewsWrite a Review

Rated 4.5517 out of 5 stars
290 Reviews
Would recommend to a friend

290 Customer Reviews

Rated 5 out of 5 stars
By Penny on Jan 10, 2023

Easy to order

I appreciate the help to get the prescription from the veterinarian clinic uploaded and the special food ordered and delivered. My senior cats need loving care and special foods. Thank you for the help.

Rated 5 out of 5 stars
By Ashlee on Dec 14, 2022

Perfect Calm

Great in helping calm our fur babies. Three of them can get unruly and this really helps. Plus they really like it and eat several times a day with other variety of dry foods. Thank you for a great product.

Rated 5 out of 5 stars
By Lisa on Sep 18, 2022

This stuff Works!!!

We have an aggressive cat, and he has slowly began to attack one of the smaller ones. I read some reviews and thought we would give it a chance. He loves the taste, and I truly think he is less aggressive. Not completely gone, but better for sure. It is expensive, but we will keep buying it because it works!

Rated 5 out of 5 stars
By Happycats on Oct 5, 2022

Now to get it in the bowls

Super happy cats one is calmer just by the delivery - you would think we were out- good stuff vet approved/recommendation- treats our kitties well

Rated 5 out of 5 stars
By Jack on Aug 9, 2022

Highly recommend

One of my cats has anxiety. My vet prescribed this dry cat food for him. This Royal Canin Calm has made a remarkable difference in his anxiety. He is calm and relaxed now. He likes the flavor and so does my other cat ( who doesn’t need it but wants to eat it too). I am so thankful my vet recommended this food.

Rated 5 out of 5 stars
By NativeNYer on May 29, 2022

My Cat's Favorite

This dry food, which is served along with wet food is my cat’s favorite dry food. On occasion, I put out an additional dry food to provide the cat with variety. One of the alternatives is to help prevent hairballs and the other is to support dental health. They are eaten, but only after the Calm is gone. During the recent short period of time when Calm was not available, I panicked. I was not sure that my cat would survive it. We made it through all right. I am truly thankful that Calm is available again! We are going to start our second bag since Calm has been back!!

Rated 5 out of 5 stars
By Sabs on Jul 14, 2022

Yah, Finally Found Something That Works

My little feral cat does well on this. She used to have litter pan avoidance issues but with this food and Dr. Elsey's Cat Attract litter, she does great.

Rated 5 out of 5 stars
By Dorothy on May 2, 2022

Definitely Worth Trying for Feline Territory Issues!

We have 5 cats and after 6 years, a territory marking issue started - caused by intimidation of 10 yr old shyest kitty by two others. We have been feeding these 3 kitties the Calm food for almost two weeks now. We definitely believe this food is helping to keep personalities calm (no marking). It is very expensive, but when you are faced with no alternatives (not possible to rehome marking cat), it is definitely worth it!

Rated 5 out of 5 stars
By SDJack on Mar 24, 2022

My cat loves this stuff

My cat had been eating Royal Canin Urinary S/O food and was doing OK with it, but she really likes the Calm formula that also has the S/O index. Our vet recommended this because the cat seemed kind of skittish. The cat has been eating this for two weeks now. She loves it, has no issues digesting it and is very happy.

Rated 4 out of 5 stars
By BillyandDianne on Mar 22, 2022

Excellent service

Placed our order and had it sent to vet in FL where we were on vacation. Staff at vet's office refused the package and when we found out, we called to have the order sent to our home address. Turns out the chewy order got home before we did!! Even with this misunderstanding. Think that's pretty impressive service. Thank you!!