ROYAL CANIN VETERINARY DIET Adult Renal Support S Dry Cat Food, 6.6-lb bag -

Royal Canin Veterinary Diet Adult Renal Support S Dry Cat Food

By Royal Canin Veterinary Diet
Rated 4.6773 out of 5 stars
Veterinary Diet Item

$54.99Chewy Price
$52.24Autoship Price
(Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.
This item requires vet authorization.

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About This Item


  • A veterinary-exclusive dry cat food for adult cats to support kidney health.
  • S = Savory to help stimulate appetite in cats and encourage eating with square-shaped kibble.
  • Helps compensate for decreased appetite with a highly palatable energy-dense formula to reduce meal volume.
  • Helps promote kidney function with a precise antioxidant complex, fatty acids from fish oil, low phosphorus, and targeted protein levels.
  • Works in conjunction with a variety of appetite-stimulating Royal Canin Renal Support Wet and Dry Cat Food varieties

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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

About Royal Canin Kidney Health for Cats

Concerned about Your Cat’s Kidney Health?

The healthy functioning of your cat’s kidneys is essential to them living a healthy life. Their kidneys serve as a filtering system that helps remove toxins and waste from blood. You should always work with your veterinarian to monitor your cat’s kidney health.

Support Your Cat’s Quality of Life Through Kidney Health Challenges

Feed a Specific Renal Diet

Your veterinarian can recommend the right diet to support your cat’s kidney function.

Encourage Drinking Water

Make sure that your cat always has fresh and clean water available. Offering them moist food can also support hydration.

Stimulate Your Cat’s Appetite

Offer your cat a nutritional option with different taste, smell, and texture to help ensure food intake, especially for pets with a poor appetite.

How Nutrition Can Help

Your veterinarian may recommend a formula that includes:

Digestive Support

A combination of highly digestible proteins, balanced fibers, prebiotics and EPA + DHA to support digestive health.

Antioxidant Complex

Enriched with a blend of antioxidants to promote tissue and cellular health.

Kidney Support

Modified phosphorous and protein to support kidney function.

Adapted Energy

Adapted energy content to reduce meal volume and help compensate for a decreased appetite.

Add Variety and Remember to Set Autoship

Offering a range of aromas and textures can help ensure palatability and adequate food intake. Also, remember to set Autoship to make sure that your cat always has their veterinarian’s recommended nutrition.

About Royal Canin

What sets Royal Canin apart is their close collaboration with veterinarians. Through these professional partnerships, they strive to learn everything they can about pet health, including how different formulas perform for different breeds, sizes, lifestyles and therapeutic conditions. Ongoing research and development allows Royal Canin to keep providing the precise nutrition dogs need for a range of medical conditions.

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Questions & Answers

10 Customer Questions

what is the difference between royal canin vet diet renal support "A" and "S" dry cat food?
Answer by ChewyMar 17, 2018
The A is for aromatic, the S is for savory and the F is for flavorful. Each will have the same medical properties however they will be formulated a little differently to appeal to various cat preferences.

what is the protein, phosphorus, sodium, and carbohydrates levels on a dry matter basis?
Answer by ChewyJan 09, 2020
This variety contains approximately 38.8% Carbohydrate content on an as-fed basis (42.1% on a dry matter basis), 0.41% Sodium content on an as-fed basis (0.44% on a dry matter basis), 0.55% Phosphorus content on an as-fed basis (0.59% on a dry matter basis) and 22.5-26.5% Protein content on an as-fed basis (24.4-28.8% on a dry matter basis).

How big are the kibble? My cat only likes big pieces.
Answer by ChewyNov 27, 2017
The kibble does vary in size due to baking the food. A good example of this is when baking cookies, the same recipe is used and the process is the same, but some batches may be fluffier and some may be denser. Size variation can be seen on occasion, but will not affect the nutritional value of the diet.

Does this food contain any Omega-6 Fatty Acids?
Answer by ChewyJan 01, 2023
This food does not contain omega-6 fatty acids.

ReviewsWrite a Review

Rated 4.6773 out of 5 stars
344 Ratings
Would recommend to a friend

344 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 Beth on Apr 19, 2023

Chewy notified me as promised

Royal Canin stopped production of the only food my cat would eat enough of to hold hid weight which is so important when he has hypertension, thyroid issues and kidney failure. I couldn't find this food anywhere and Chewy was the only company that said they could notify me when they had the food back in stock and they did. This is how you create a loyal customer base. Thank you Chewy!

Rated 5 out of 5 stars
By jsglowin on Apr 21, 2023

Great Experience!

OK. First, chewy was out of stock when I first needed it but, in true chewy fashion, they notified me when the item was available without my having to constantly go online and look. Second, Item arrived in perfect shape with protective packaging. Third (and this tops the cake!), my cat actually likes it! Thank you, chewy, for another 5-star experience!

Rated 5 out of 5 stars
By noyoudontneedit on Apr 18, 2023

Great for my girls

One of my 10 year old cats was recently diagnosed with kidney issues and the vet gave a prescription for this food. My girls have had a history of sensitive stomachs and throwing up foods so I was scared to switch again but fortunately they both love this food - both wet and dry - and haven't had any issues at all with their stomach sensitivity.

Rated 5 out of 5 stars
By Ruth on May 15, 2023

The 6th attempt to get my cat to eat normally.

This is the 6th renal diet I have ordered for my cat. She had poor appetite and was loosing weight. Her kidney functions have gotten worse She got put on an appetite stimulant and now she likes it!

Rated 4 out of 5 stars
By Jen on May 16, 2023

So far, is all right

We've been struggling to get a picky cat to eat, and this is being received better than the previous brand, so we're hopeful. I like that we can get different flavors and shapes of kibble, too.

Rated 5 out of 5 stars
By Marilyn on Apr 17, 2023

Helping Annie!

Excellent service. Delivery on time. Good products and luckily our cat is eating the food which supports her renal functions!

Rated 5 out of 5 stars
By Jimmy on Nov 24, 2022

Royal Canin Renal Dry Cat Food

It's almost been a year since my indoor cat of 14 years Kimba was put on her Renal Support diet. For a couple weeks She was always sleeping and it appeared she was laboring when walking. Was not interested in her toys or jumping into her cat tree. After about a month on this diet, she started to play again and dart across the house and jump into her tree. She started on the F Support dry food diet. She will not eat wet cat food, but has always been a water lover. Her vet says that is a good thing. The second time I bought her the A Support as I was unaware of the different recipes. She would not eat it. After I noticed my error, I returned it for the F and she was happy. Several months ago, there was a delay on the delivery because of a shortage of the F, and she was almost out. I had to run to a local pet store where all they had was A & S Support. I gambled and tried the S, because she would have ran out by the scheduled date of delivery. She ate the S Support and when the F Support came, she didn't want any part of it. My cousin has a male cat about the same age, and on the same diet. I gave her the F Support for him and he was ok with it because he isn't a finicky eater like Kimba is. All is well, and she has a clean bill of health after her senior panel in Sept. She had a minor urinary tract infection that cleared up in less than a week after treatment. So I highly recommend Royal Canin for senior cats. It has given her a much better quality of life.

Rated 5 out of 5 stars
By JJCatz on Dec 31, 2022

A prescription diet my cat likes

I tried a different brand and even a different formula from Royal Canin but my cat was not interested. She definitely likes this brand and formula and even my other cat, who does not need a renal diet, loves this so both cats get it.

Rated 5 out of 5 stars
By Theresa on Feb 21, 2023

She eats it!

My cat had given up on all dry food but she eats this really well along with the RC renal support wet food

Rated 5 out of 5 stars
By Arleen on Jan 8, 2023

My Kristy is eating it.

My cat, Kristy eat the Royal Canin Renal Support S instead of the wet food. Please let me know when it comes in. I will order small bag of another until you receive it.