Royal Canin Veterinary Diet Calm Formula Dry Dog Food

Prescription Item

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8.8-lb bag
  • 8.8-lb bag
  • 4.4-lb bag

This item requires prescription approval. Details

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Royal Canin Veterinary Diet Calm formula is designed for dogs under 33 pounds. It includes two amino acids that help pets maintain emotional balance. Alpha-casozepine is an amino acid chain derived from milk shown to have calming effects. L-tryptophan is a more commonly known amino acid that also has calming effects. In addition, the formulas include Nicotinamide, also known as Vitamin B3. Nicotinamide creates a calming effect within the central nervous system. It's also formulated to meet the nutritional needs of dogs facing digestive, skin and urinary sensitivities.

Key Benefits
  • Canine calm is a highly digestible, palatable, complete and balanced adult dog food formulated to meet the nutritional needs of dogs facing digestive, skin and urinary sensitivities.
  • Formula contains calming effects from Alpha-casozepine, L-tryptophan and Nicotinamide (Vitamin B), optimal amounts of these B vitamins and amino acids help maintain the skin’s natural barrier effect
  • S/O index Promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals
  • Contains a specific nutrient blend to help regulate intestinal transit and to help support beneficial digestive flora
  • Also contains nutrients to support healthy teeth

This product requires a veterinary prescription. Simply provide your vet's information during checkout and we'll follow up to confirm the prescription, or email a copy of your prescription to and we'll get your order out right away.

  1. How To Order

See all items by Royal Canin Veterinary Diet

  • Item Number
  • Weight
    8.8 pounds
  • Brand

    Royal Canin Veterinary Diet

  • Brand

    Royal Canin

  • Breed Size

    Small Breeds, Medium Breeds, Large Breeds

  • Food Form

    Dry Food

  • Lifestage


  • Made in

    United States

  • Special Diet

    Sensitive Digestion, Prescription Food

Nutritional Info

Brewers Rice, Chicken By-Product Meal, Corn, Chicken Fat, Wheat Gluten, Wheat, Natural Flavors, Chicory, Salt, Vegetable Oil, Fish Oil, Calcium Sulfate, Potassium Chloride, Sodium Silico Aluminate, Fructooligosaccharides, Sodium Tripolyphosphate, Taurine, Dl-Methionine, Choline Chloride, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), Inositol, Niacin Supplement, L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), D-Calcium Pantothenate, Biotin, Pyridoxine Hydrochloride (Vitamin B6), Riboflavin Supplement, Thiamine Mononitrate (Vitamin B1), Vitamin A Acetate, Folic Acid, Vitamin B12 Supplement, Vitamin D3 Supplement], Dried Hydrolyzed Casein, Marigold Extract (Tagetes Erecta L.), L-Lysine, Trace Minerals [Zinc Proteinate, Zinc Oxide, Ferrous Sulfate, Manganese Proteinate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite, Copper Proteinate], L-Tryptophan, Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

3,684 kcal/kg, 354 kcal/cup

Guaranteed Analysis
Crude Protein 23.0% min
Crude Fat 14.0% min
Crude Fiber 3.4% max
Moisture 10.0% max
Tryptophan 0.22% min
Feeding Instructions
Weight Tendency to become Overweight (Cup) Ideal Weight (Cup)
4.4 lbs 3/8 1/2
6.6 lbs 5/8 5/8
8.8 lbs 3/4 7/8
13.2 lbs 1 1 1/8
15.4 lbs 1 1/8 1 1/4
17.6 lbs 1 1/4 1 3/8
19.8 lbs 1 3/8 1 1/2
22.0 lbs 1 3/8 1 5/8
26.5 lbs 1 5/8 1 7/8
30.9 lbs 1 7/8 2 1/8
33.1 lbs 1 7/8 2 1/4

It is recommended that your cat be fed 2 - 4 equal portions of the diet per day.

Transition Instructions

When changing to a new diet, gradually introduce the new food by mixing it with the previous food over a 5 - 7 day period.


Why should I buy Vet Diet food online?

Shopping for Vet Diet food is easy! Chewy experts are available 24/7 to answer your questions and guide you through the process. We offer competitive prices, free shipping on orders over $49, and more savings if you sign up for an Autoship subscription.

How do I order Vet Diet food?

  1. Search our website for the diet your vet recommends, then add it to your cart. You can purchase your Vet Diet food with any other goodies you need!
  2. At checkout, you’ll be asked for required information. Enter your pet’s name and type your vet’s name and telephone number.
  3. Place your order, and we’ll take care of the rest!

How will you contact my vet?

Our Vet Diet team will personally contact your vet for approval. If your clinic needs more information from you or recommends a different diet, we’ll let you know immediately.

Does it help if I send you my prescription?

Yes! If you have a paper copy of your prescription, email a picture to, start a chat, or fax your prescription to 1-800-619-7973.

Can I use a prescription written by a veterinarian out of state?

Of course! We can accept valid prescriptions from anywhere in the United States and Canada—that includes US territories, like Puerto Rico.

Why do I need a prescription?

Veterinary diets are formulated with the precise ingredients and nutrients needed to address specific medical issues. If you don’t have a paper prescription, no sweat—once you provide your vet’s information, our team will take over.

Can someone else (such as a caretaker or family member) place an order for my pet?

Yes, but we’ll need them to provide us with your full name or the pet’s owner’s name via phone, email or chat after the order is placed, so the clinic can locate your pet’s records when we contact them.

How can I help expedite my order?

Just follow these simple steps: 1. Create your pet ’s profile on 2. If you have an Autoship scheduled, but you’re running low on refills, contact us ahead of time to let us know if you have a new clinic or if any prescription information has changed. 3. If you have a prescription handy, send it to us before you order—by sending an email to, starting a chat with one of our experts, or faxing us at 1-800-619-7973.

Do I need to set up a pet profile?

We recommend it, but it’s not required. You can create your pet’s profile by logging in at, hovering over your account, and choosing “pet profile.”

Do prescriptions expire?

Yes. Your vet will tell us when your prescription will expire and how many refills we can send before they’d like you to check back in with them.

Can I set up auto refills?

Yep! Sign up for Autoship and we’ll automatically ship your food for as long as your prescription allows. If you run out of refills, or your prescription expires, we’ll automatically contact your vet for a new approval. If we hit any bumps in the road, we’ll let you know right away.

What if I have more questions? How can I reach the Vet Diet team at Chewy?

Email us at, start a chat on, or call us anytime at 1-800-672-4399. We’re here for you 24/7.

Customer Reviews
28 Reviews 28 Reviews 4.6 out of 5 Stars

92% Recommend

92% of reviewersrecommend this product

4.6 / 5

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  • I don’t think anything will calm down my Nina!

    By on

    My 2 year old Cavalier King Charles Spaniel suffers from separation anxiety and a willful disposition. I love her, however, it appears that nothing will calm her down. I don’t blame this on the product. It’s just the way she is.

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  • I feel better!

    By on

    I have had some anxiety issues. But Chewy helped me get some relief, quick! I eat this as "croutons" on my regular food, to give me a bit of peace from my racing mind. Thank you! Love, Annie the Rescue Golden Retriever

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  • First time ordering

    By on

    Giving this a 3 for now as this is the first time using this product. I hope it works and calms down my IG. She is a rescue. It took a year for her to get around men and strangers and has always been a very nervous dog, especially if I am out of her site(I could be in the next room and she would go nuts). My other 4 are not, so it isnt the breed.

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  • Calming Food for Snickers

    By on

    My Snickers loves the taste of Royal Canin Calm Food. He just started so we are still mixing 25 % of Royal Canin and 75 % of his regular food. So far I have not seen any improvements. But its only been a week. Hoping to see his behavior change eventually.

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  • It works!!

    By on

    My 1 dog is very highstrung. He has been on meds for awhile. But eating this dog has calmed him down some. I am hoping the linger he is on it the better he gets.

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  • Small bag, big dog

    By on

    I wish there was a large breed option. My dog isn’t crazy about the food yet. I’m mixing it and in with his other kibble.

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  • Great food great service

    By on

    My dogs really enjoy this food. It does help with their activity control.

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  • Hope this helps my dog

    By on

    My yorkie mix dog gets extremely stressed out when there is thunder or fireworks I asked my veterinarian for suggestions to help. She told me about RC Veterinary Diet Calm Formula Thanks to Chewy, I received my order within 48 hours. We are trying it and hopefully it will help him more

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  • Four paws up

    By on

    This product is working great for our very senior pup who has been diagnosed with dementia and has been wandering at night and getting "lost". We recently started feeding him CALM for his evening meal ~ that with his other meds have given him AND us all night rest. Thanks for this wonderful product. Zzzzzzzz

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  • Perfect for small, nervous dogs!!

    By on

    The food helps keep our miniature dachshund calm and fed. We can definitely tell a difference!

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