Royal Canin Veterinary Diet Adult Calm Dry Cat Food

By Royal Canin Veterinary Diet
Rated 4.4559 out of 5 stars
Veterinary Diet Item


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$46.99Chewy Price
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This item requires vet authorization.

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


Play Video: Learn More About Royal Canin Veterinary Diet From Our Team of Experts
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, Brewers Rice, Corn...Chicken By-Product Meal,  Corn,  Wheat...New: Corn, Brewers Rice, Wheat Gluten...Chicken By-Product Meal, Brewers Rice, Corn...
Special DietVeterinary Diet, Pea-Free, With GrainVeterinary Diet, Pea-Free, With GrainHigh-Protein, Veterinary Diet, Weight Control, With GrainVeterinary Diet, Pea-Free, With GrainVeterinary Diet, Pea-Free, With Grain
Food FlavorPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, Chicken
Health FeatureCalming, Digestive HealthUrinary Tract HealthWeight ManagementHip & Joint Support, Senior CareDental & Breath Care
LifestageAdultAdultAdultAdult, SeniorAdult
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

25 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.

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.

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%.

ReviewsWrite a Review

Rated 4.4559 out of 5 stars
329 Ratings
Would recommend to a friend

324 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 Sharon on Nov 7, 2023


This product has caused my 16 month old cat to calm down when I'm sleeping. She used to jump all over me on and off during the night but now she does that only once around 3 when she wants to be fed and now even sleeps beside me. I need a vet's prescription to buy it.

Rated 5 out of 5 stars
By Martha on Nov 27, 2023

My kitteis love this food and it definitely helps with anxiety.

I have three kitties and one of them suffers with extreme anxiety. He was abused before we adopted him. We free feed our kitties so we are very happy that all three of them love the taste.

Rated 5 out of 5 stars
By Marla on Oct 5, 2023

Lifesaver For My Cats

This is expensive but worth every dime for my cats. They are so much calmer and snuggly with us and each other. I have had up to 5 cats at one time and I swear by this food. I tried other methods and anxiety relievers including Feliway and Zylkene as well as Gabapentin. They helped but this food is by far the best! And they LOVE it! Everyone is happier except my wallet but my kitties are worth it!

Rated 1 out of 5 stars
By Sandra on Oct 30, 2023

Opposite effect

I have a scared cat Jake & his nemesis Billy who beats him up. As soon as i started the r c Calm, Jake got more nervous & Billy vociously attack3d him, which hadn,t happened for quite a while. I fed them for s3veral days but it got worse I want to return the bag

Rated 2 out of 5 stars
By Rachel on Oct 4, 2023

Not effective

Unfortunately this for did not have the desired affect on my cat. He has been struggling with some stress related issues and is not easy to give medication to so my vet recommended trying this food. After going through the whole 4lb bag i didn’t notice any difference in his behavior. He is a notoriously picky eater and did actually eat it which is in and of itself impressive so i did give 2 stars

Rated 5 out of 5 stars
By Olivia on Nov 13, 2023

My street rescue had some urinary issues that really stressed an already standoffish cat out. This food not only cleared up his reoccurring UTIs but has also allowed him to be more calm and social.

Rated 5 out of 5 stars
By Debbie on Nov 10, 2023

Cat loves it!

Purchased with vet prescription for kitty with FIC to decrease urinary cystitis and stone formation so a little early to tell, but she seem to really enjoy this food and is less anxious.

Rated 4 out of 5 stars
By Donna on Nov 14, 2023

Need a wet option for this food

My cat is on this food due to persistent UTIs. My vet said it would be better for him if Royal Canin would make a wet version of this food. Please!

Rated 4 out of 5 stars
By Lisa on Oct 22, 2023

Royal Canin Calm cat food

It's just week one, but my cats seem to be taking it well. The calming affect works, it seems to happen about 10 minutes after they eat and lasts for hours. It's helping.

Rated 5 out of 5 stars
By KeKot on Aug 4, 2023

This food is a life saver!

When I moved in with my boyfriend four months ago, we combined his two cats with my two cats. Most of the cats got along well with one another but one of mine (Smudge) and one of his (Cantu) quickly became enemies despite our very slow (2+ months) introductions. Smudge has long been known as the Destroyer of Tranquility and Weilder of Chaos in my household, but it worsened drastically after adding more cats to the mix. We tried Feliway diffusers, Sentry calming collars, ProPlan Calming Care, Vibeful Behavior Support, and Jackson Galaxy's Bully Solution. They all helped and we still use them, but Smudge never stopped bullying Cantu and causing chaos in the household which caused us to resort to drugging both cats with Gabapentin. That worked, but we didn't like the idea of sedating them daily. After talking with my vet, we decided to put all the cats on Royal Canin Calm. It's only been a few days but it's made a world of difference! Not only have the cats stopped fighting, but it actually seems like they're beginning to like each other. We have caught them napping together several times. It seems Smudge's reign of terror has finally come to an end, whcih are words I never thought I would say. More importantly, he seems to be choosing to chill out rather than being forced to by sedatives, which seems to have made him happier. He's a completely different cat, and it truly changed our lives by bringing peace back into our home. This food is worth its weight in gold!