Formulated with low phosphorus and restricted protein of high quality to support renal function, helping to improve the cat’s quality of life.

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

A specific aromatic profile with a dedicated kibble shape to help stimulate the cat’s appetite, particularly in cases prone to food aversion.

Concentrated energy

Royal Canin Veterinary Diet Renal Support S is a veterinary-exclusive dry cat food for adult cats to support kidney health

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Labrador Retriever adult sitting with its owner outdoors

Corn, chicken fat, pork digest, brewers rice, corn gluten meal, pea fiber, fish meal, natural flavors, dried chicory root, wheat gluten, fish oil, calcium carbonate, vegetable oil, sodium silico aluminate, potassium chloride, powdered psyllium seed husk, potassium citrate, salt, DL-methionine, sodium pyrophosphate, L-arginine, fructooligosaccharides, choline chloride, taurine, vitamins [DL-alpha tocopherol acetate (source of vitamin E), L-ascorbyl-2-polyphosphate (source of vitamin C), biotin, niacin supplement, D-calcium pantothenate, riboflavin supplement, pyridoxine hydrochloride (vitamin B6), vitamin A acetate, thiamine mononitrate (vitamin B1), folic acid, vitamin B12 supplement, vitamin D3 supplement], trace minerals [zinc proteinate, zinc oxide, ferrous sulfate, manganese proteinate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], magnesium oxide, marigold extract (Tagetes erecta L.), rosemary extract, preserved with mixed tocopherols and citric acid.

Calorie Content

This diet contains 4054 kilocalories of metabolizable energy (ME) per kilogram or 397 kilocalories ME per cup on an as fed basis (calculated).

Crude Protein (min)22.5%
Crude Protein (max)26.5%
Crude Fat (min)19.5%
Crude Fiber (max)5.0%
Moisture (max)8.0%
Eicosapentaenoic + Docosahexaenoic acid (EPA + DHA) (min)0.25%
Phosphorus (max)0.57%
Vitamin E (min)355 IU/kg
Ascorbic acid* (min)170 mg/kg.

*Not recognized as an essential nutrient by the AAFCO Cat Food Nutrient Profiles.

Dry Feeding

Weight Normal Lean
4.4 lb (2 kg) 1/4 cup (30 g) 3/8 cup (36 g)
5.5 lb (2.5 kg) 3/8 cup (36 g) 3/8 cup (43 g)
6.6 lb (3 kg) 3/8 cup (40 g) 1/2 cup (48 g)
7.7 lb (3.5 kg) 1/2 cup (45 g) 1/2 cup (54 g)
8.8 lb (4 kg) 1/2 cup (50 g) 5/8 cup (59 g)
9.9 lb (4.5 kg) 1/2 cup (54 g) 5/8 cup (65 g)
11 lb (5 kg) 5/8 cup (58 g) 3/4 cup (70 g)
12 lb (5.5 kg) 5/8 cup (62 g) 3/4 cup (75 g)
13 lb (6 kg) 5/8 cup (66 g) 3/4 cup (79 g)
14 lb (6.5 kg) 3/4 cup (70 g) 7/8 cup (84 g)
15 lb (7 kg) 3/4 cup (74 g) 7/8 cup (89 g)
17 lb (7.5 kg) 3/4 cup (78 g) 1 cup (93 g)
18 lb (8 kg) 7/8 cup (81 g) 1 cup (97 g)
19 lb (8.5 kg) 7/8 cup (85 g) 1 cup (102 g)

Mixed Feeding with Renal E Wet

Weight Can + Normal Lean
4.4 lb (2 kg) 1/2 can + 1/8 cup (11 g) 1/8 cup (17 g)
5.5 lb (2.5 kg) 1/2 can + 1/8 cup (16 g) 1/4 cup (23 g)
6.6 lb (3 kg) 1/2 can + 1/4 cup (21 g) 1/4 cup (29 g)
7.7 lb (3.5 kg) 1/2 can + 1/4 cup (26 g) 3/8 cup (35 g)
8.8 lb (4 kg) 1/2 can + 1/4 cup (30 g) 3/8 cup (40 g)
9.9 lb (4.5 kg) 1/2 can + 3/8 cup (35 g) 1/2 cup (45 g)
11 lb (5 kg) 1/2 can + 3/8 cup (39 g) 1/2 cup (50 g)
12 lb (5.5 kg) 1/2 can + 3/8 cup (43 g) 1/2 cup (55 g)
13 lb (6 kg) 1/2 can + 1/2 cup (47 g) 5/8 cup (60 g)
14 lb (6.5 kg) 1/2 can + 1/2 cup (51 g) 5/8 cup (65 g)
15 lb (7 kg) 1/2 can + 1/2 cup (54 g) 3/4 cup (69 g)
17 lb (7.5 kg) 1/2 can + 5/8 cup (58 g) 3/4 cup (74 g)
18 lb (8 kg) 1/2 can + 5/8 cup (62 g) 3/4 cup (78 g)
19 lb (8.5 kg) 1/2 can + 5/8 cup (65 g) 7/8 cup (82 g)
Royal Canin Veterinary Diet Feline Renal Support S Dry Cat Food

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Customer reviews

ROXY23
12 Nov 2023

Loves the "A"

My cat loves the "S" but not the "A" she eats well now
Lezliey
31 May 2022

Kidney Care

I have had to use this food for several months and my 17 year old cat prefers it. I also have another 16 yr old and 2 yr old that like it too! The food has given my cats more time and better health
Snickers4
31 May 2022

This is the 1st dry cat food my cat has eaten in 3 years. She was put on a renal diet 8 months ago. I was looking for a dry food that I could leave out for the days I have to be away from the house for long periods. As soon as I opened the bag, she couldn't wait to eat a handful and totally ignore the moist food.
Lucyshuman
24 Nov 2021

Beneficial

My DVM prescribed this formula for Lucy to support her Renal decline two years ago. She did very well on it and it gave her a good quality of life. She lived to almost 15, her final blood panel before her dental procedure show she had improved in her Renal levels. Her dental procedure reveled a fatal tumor and I choose to let her pass peacefully. I would recommend this prescription diet for felines with renal issues.
DJT69
30 Oct 2019

Resealable bag

[This review was collected as part of a promotion.] The Renal Support S mixed half and half with the Urinary SO is keeping my cat alive and healthy. Her blood work is back in the normal range with this combination.
Hayley
30 Oct 2019

Cat loves it!

[This review was collected as part of a promotion.] My cat with early kidney disease has been on this diet for a while now. He started on another prescription brand and wasn't a fan of it, so I switched him to Royal Canin and have had no trouble with him being picky about it!
Joe1
30 Oct 2019

Cats like it!

[This review was collected as part of a promotion.] My cats seem to enjoy. Just wish it didnt cost so much!
Shirlsaw63
30 Oct 2019

3 cats all eat this

[This review was collected as part of a promotion.] My cats have always gone for Royal Canin dry food but when one needed food for kidney support I was concerned about them accepting this. This actually is a preferred dry food for all of them!! While they all have different styles for wet food I am so pleased they will all eat this one!
Nancy in the Couve
23 Oct 2019

Great product for feline renal issues.

[This review was collected as part of a promotion.] This was recomended by my vet, for my cat Tucker. He really likes this dry food, and it has been over a year, that he has been eating it.
Casper
23 Oct 2019

He likes the taste

[This review was collected as part of a promotion.] I bought this for one of my cats that has crystals and he loves it anytime its feeding time he is waiting for it