Royal Canin Veterinary Diet Calm Formula Dry Cat Food

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8.8-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 - 7 day period.

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Customer Reviews

87 reviews 87 Reviews 4.7 out of 5 Stars

97% Recommend

97% of reviewersrecommend this product

4.7 / 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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  • Great new food!

    By on

    I'm so glad Royal Canin came out with this new food. I'm hoping I will eventually be able to get my cat off the anti-anxiety medicine. They, being fussy eaters, llike the smaller kernels and like the taste.

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  • Calm for a vocal nervous kitty

    By on

    This food was recommended by a friend for my kitties. They seem to tolerate it very well and it seems to help with controlling unwanted potty behavior. However, my dog helped himself to it!

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  • Great product

    By on

    It was cheaper than my vet clinic and it came speedier than the vet clinics online pharmacy. Very happy with and it made my fur babies happy to have their food!

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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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  • 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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  • Very pleased

    By on

    Such a great product I wouldn't order anywhere else.My cat as issues with being nervous and Calm is a great product. Thanks so much .

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  • Picky Cat Likes This

    By on

    My Maine Coon 5-year old does like this food. He has been a little more friendly with us and our new kitten (his new brother).

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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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