Royal Canin Veterinary Diet Calm Formula Dry Cat Food

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8.8-lb bag
  • 8.8-lb bag
  • 4.4-lb bag
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This prescription item requires vet approval. Details


The Royal Canin Veterinary Diet Calm formula is designed for cats. It include 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.

Key Benefits

  • Feline Calm is a highly digestible, palatable, complete and balanced adult cat food formulated to meet the nutritional needs of cats 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
  • The combination of fibers in this diet encourages normal intestinal transit and the elimination of hairballs in stools

Note: Royal Canin Veterinary Diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to

See all items by Royal Canin Veterinary Diet

  • Item Number
  • Weight
    8.8 pounds
  • Brand
    Royal Canin
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Sensitive Digestion, Prescription Food

Nutritional Info


Chicken By-Product Meal, Corn, Brewers Rice, Wheat Gluten, Corn Gluten Meal, Wheat, Natural Flavors, Powdered Cellulose, Dried Plain Beet Pulp, Chicken Fat, Fish Oil, Calcium Sulfate, Salt, Potassium Chloride, Dl-Methionine, Vegetable Oil, Fructooligosaccharides, Taurine, L-Lysine, Psyllium Seed Husk, 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, L-Tryptophan, Marigold Extract (Tagetes Erecta L.), Trace Minerals [Zinc Proteinate, Zinc Oxide, Ferrous Sulfate, Manganese Proteinate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite, Copper Proteinate], L-Carnitine, Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

3,434 kcal/kg, 330 kcal/cup

Guaranteed Analysis
Crude Protein 34.0% min
Crude Fat 9.0% min
Crude Fiber 6.0% max
Moisture 8.0% max
Tryptophan 0.35% min

Feeding Instructions

Weight Tendency to become Overweight (Cup) Ideal Weight (Cup)
4.4 lbs 1/4 3/8
5.5 lbs 3/8 3/8
6.6 lbs 3/8 1/2
7.7 lbs 3/8 1/2
8.8 lbs 1/2 5/8
9.9 lbs 1/2 5/8
11.0 lbs 1/2 3/4
13.2 lbs 5/8 3/4
15.4 lbs 3/4 7/8
17.6 lbs 3/4 1
19.8 lbs 7/8 1
22.0 lbs 7/8 1 1/8

It is recommended that your cat be fed 2 to 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 to 7 day period.

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Customer Reviews

80 reviews 80 Reviews 4.8 out of 5 Stars

96% Recommend

96% of reviewersrecommend this product

4.8 / 5
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  • Reduces stress

    By on

    This formula really works! I used Urinary S/O prior to this, since one of my cats has bladder problems. Someone in this group of 4 continued to spray, so I used Feliway and a calming collar on the culprit(?). My vet recommended this, and now that I've used a lg and small bag, I won't be without it! All 4 cats are much more affectionate and the marking has almost quit. Please keep providing this great product--reduces stress for all in my household!

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  • Highly palatable...

    By on

    I have a wild boy that has anxiety and always tries to run outside. I am hoping this works. As soon as I put this in the bowl, my kitties stuck their noses in and started to eat. About an hour later, they were napping. So far so good. All I know for sure, is they find this very tasty. It is SO index for urinary issues, which is GREAT for my boy. They have been on RC SO, but if I can address the anxiety AND the crystals, that would be PAWSOME!

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  • Best Cat Food Ever

    By on

    I have always had trouble getting my cats to eat dry food. However from day one the cats took to this immediately. It has also helped to calm the cats down. I could not believe it. There have been no hairballs in my house since this food has come into our lives. The cats are healthy and happy and that's all that matters to me.

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  • Love chewy!

    By on

    I love ordering from chewy! Amazing price and so easy! I've had so much trouble with my baby boy and he's finically been difficult on me too! This was a breath of fresh air for me and gives me hope about our future (with me being a poor cat mom)

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  • Awesome product and customer service

    By on is the best! I was leaving on a trip, and had a new prescription for my kitty, and they contacted my vet and it was received the next day! I will always use them for my pet food needs.

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  • Royal Canin Calm

    By on

    I do not know what it is but my cats are wild for this food. WILD My only problem is that it is in an automatic feeder. Might have to start limiting it. But it's hard with 7 cats.

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  • Great food

    By on

    Seems to be helping , my new cat was having trouble adjusting to the other pets and the vet recommended calming food , so far so good , shes laying around the house more instead of hiding

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  • Cats love it!

    By on

    This was prescribed by my vet for kitties that had been having some anxiety from company and moving. This seemed to help keep them calm along with my feliway plug ins. The bonus was that they loved it too!

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  • I wish it was bigger!

    By on

    This on the list of foods that my cats can eat. Well, my cats don't exactly get along. I also have to keep them in my small room. Needless to say, there have been some fights. Well, this food has calmed my cats down to the point they are actually sleeping by me, ON THE SAME SIDE OF THE BED!! I use to lay in the middle and cuddle one on each arm. It's helped a ton!! I will be ordering more!

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  • Calm formula

    By on

    Great product are cats get along so much better and their using the litter box regularly.

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