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Royal Canin Veterinary Diet Calm Formula Dry Cat Food

List Price: $66.29
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8.8-lb bag
  • 8.8-lb bag
  • 4.4-lb bag

Product Description

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

  • Contains a hydrolyzed milk protein and tryptophan (anaminoacid) to help maintain emotional balance of the cat
  • Precise amounts of B vitamins and amino acids to help maintain the skin's natural barrier effect
  • Specific nutrient blend to help regulate intestinal transit and to help support beneficial digestive flora
  • This diet promotes a urinary environment unfavorable to the development of both struvite and calcium oxalatecrystals
  • A combination of fibers 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 58680
Weight 8.8 pounds
Special Diet
  • Sensitive Digestion
  • Prescription Food
Food Form
  • Dry Food
  • Adult
  • Royal Canin
Country of Origin
  • United States

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Important Information


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.

Customer Ratings & Reviews

Rated 4.8 out of 5 by 33 reviewers.
Rated 5 out of 5 by It Works! Our insane, manic, spastic 6-month old kitten ceased attacking the curtains, flying from speaker to refrigerator-top, assaulting other cats, climbing the light fixtures and calmed down just enough to let us see how much we love him. It's as if he swallowed "The Little Book of Calm" (though he chewed through the bag before I had a chance to serve the first portion). Our placid 9-year old cat would not be left out of the experiment, but we hope he'll wake up by New Years. December 18, 2012
Rated 5 out of 5 by helps relax my hypervigilant cat This diet was recommended by my cat's vet and I think has had a very calming effect on my cat. Much better solution than needing to add prescription drugs to her diet. Competitive price and speedy delivery as well! September 3, 2014
Rated 5 out of 5 by This Calming Cat food is helping to restore cat tranquility. The calming cat food is helping to restore cat tranquility among our 3 cats. One of our cats was abused before we adopted him and he had never learned to play with other kittens and as a result caused us much anguish with attacking the other cats and urinating in the house. Since he stated on the calming cat food, the change in his behavior has been dramatic and we now have peace and harmony among all of our cats. has been superb in processing and delivering all of many orders in a prompt and efficient manner. October 30, 2013
Rated 5 out of 5 by Very pleased with this product it's an S/O URINARY index too CALM So pleased with personal contact I made with the company. I was truly listened to and the sweet woman I spoke to was able to answer every one of my concerns regarding the ingredients of the RX product which is the regular Urinary SO compared to the SO CALM and I wanted to change my stress sensitive Bella over to the CALM, it also works just like the regular SO Urinary but helps to keep stressed cats more calm. It only took a couple of days day for her to get used to it instead of the regular SO and a little time before I could see a difference in her stress level, but it was worth it. Glad I spoke to the company in person regarding this product, I would recommend this product for any cat that is a bit stressed and needs RX SO Urinary. October 29, 2014
Rated 5 out of 5 by Overall satisfaction I had to order this product on-line since I was away from home and needed this product fast ... our current supply was dwindling and had that sinking feeling of not being able to find it here. Ordered it on-line and it arrived within days even after having to get a prescription filled to complete the order. Not only does this product work wonders on our cat's behavior, the quality of service received was commendable. Thanks! February 15, 2014
Rated 5 out of 5 by Kitties love the taste I gave this product to my four cats knowing my son was coming with his puppies. wild and crazy doggies they are. My cats are older 11--14. so they get nerves when the dogs come in and try and take over there home. Even my 9 year old lab tries to get in on all the wildness. Any way four days before the monster puppies came I started feed this food Calm to the kitties. What a difference it made. they didn't run and hit the stayed in the room we were in even if the dogs going crazy. and the cats liked the food. I am going to get this for my sons dogs and maybe my daughters dogs to August 4, 2013
Rated 5 out of 5 by It helped my sensitive kitten! My 4 month old Ragdoll kitten was diagnosed with Idiopathic Cystitis -- vet described it as stress that could be brought on by a new environment, growth spurt or another animal. The vet prescribed the RC "Calm" and she loves it! She seems better (less bloated and uncomfortable) and we're hoping that it's cleared up at her next check up. Thanks for the great service,! February 4, 2015
Rated 4 out of 5 by Pleasantly surprised I was skeptical when the vet prescribed a "calming" cat food to try to curb my cats' new territorial behaviors. I don't event think his expectations were high - he had not tried this before. I was also concerned that the ingredients were not as good as the food I had been using but I had tried everything else without success so I bought a bag of Royal Canin Calming food. The cats love this food and they do seem to have calmed down so I will likely purchase again despite the expense. July 16, 2013
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