Royal Canin Veterinary Diet Adult Calm Dry Cat Food

By Royal Canin Veterinary Diet
Rated 4.4516 out of 5 stars
Veterinary Diet Item


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$46.99Chewy Price
$44.64Autoship Price
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FREE 1-3 day delivery

This item requires vet authorization.

Frequently Bought Together

Feliway Optimum Enhanced Calming Pheromone 30 Day Cat Diffuser Refill
Rated 3.9514 out of 5 stars
$16.49Chewy Price
Total Price: $125.64

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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Food FlavorPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, Chicken
Health FeatureCalming, Digestive HealthUrinary Tract HealthHip & Joint Support, Senior CareWeight ManagementWeight Management
LifestageAdultAdultAdult, SeniorAdultAdult
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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 4.4516 out of 5 stars
310 Ratings
Would recommend to a friend

309 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 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!

Rated 5 out of 5 stars
By Mare on May 10, 2023

From witchy to calm

Princess Diamond was getting very witchy and aggressive of late. Dr Kendra her vet suggested this calming kibble. Boy is her brother, Jax and my sister and I glad she did. 3 Tbl spoons per day and she's back to her sweet self.

Rated 5 out of 5 stars
By Kenzeemom on Mar 26, 2023

Product has worked for my girl Kenzee

The vet recommended this food because my girl Kenzee had crystals in her urine and she is also stressed by the other cats in the house. I have used other foods but she and her sons do not always eat them. However I introduced this food as the vet recommended and now they all eat it and most days they finish their bowls. At her last check up Kenzee has no more crystals so I recommend this food if you have a stressed cat in a multi kitty household.

Rated 5 out of 5 stars
By Marge on Aug 8, 2023


This is top line for my kitty’s irritable bladder problem, and she loves it!

Rated 3 out of 5 stars
By Joyce on Apr 25, 2023

Royal canin adult calm dry cat food

It took 4 days for the cats digestive system to except the change.. it has not made a difference in the cat. Very costly.

Rated 1 out of 5 stars
By kitkat on Mar 20, 2023

smells like a landfill

Vet suggested and prescribed this to help our cat not have accidents, only thing it has done is make the waste from cat almost toxic smelling.

Rated 4 out of 5 stars
By Catmom22 on Jan 3, 2023

Love the food, but the pieces are small

This food is great. My cats love it and it really works. But the pieces are quite small. Unfortunately, my girl cat eats dry food too quickly and would throw up whole chunks of this food after eating it. Even a slow feeder did not help much. Overall, if your cat doesn't eat too quickly I think this is a great product!

Rated 5 out of 5 stars
By Hoodie on Apr 25, 2023

Wonderful Service

Your company has always been wonderful getting things here in no time at all.

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 Bowbe 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.