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Sacred Birman kitten stood next to an adult Yorskhire Terrier in black and white.
Vet Products

Calorie Content

Crude Protein (min) 22.5%
Crude Protein (max) 26.5%
Crude Fat (min) 19.5%
Crude Fiber (max) 5.0%
Moisture (max) 8.0%
Phosphorus (max) 0.55%
Eicosapentaenoic Acid (EPA)* (min) 0.24%
Docosahexaenoic Acid (DHA)* (min) 0.1%

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

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 (35 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)
11.0 lb (5 kg) 5/8 cup (58 g) 3/4 cup (70 g)
12.1 lb (5.5 kg) 5/8 cup (62 g) 3/4 cup (75 g)
13.2 lb (6 kg) 5/8 cup (66 g) 3/4 cup (79 g)
15.4 lb (7 kg) 3/4 cup (74 g) 7/8 cup (89 g)
17.6 lb (8 kg) 7/8 cup (81 g) 1 cup (97 g)
19.8 lb (9 kg) 7/8 cup (88 g) 1 1/8 cup (106 g)
22.0 lb (10 kg) 1 cup (95 g) 1 1/8 cup (114 g)

Royal Canin Veterinary Diet Feline Renal Support S Dry Cat Food

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Customer reviews

27 Jun 2019

My Kitty Loves It

My cat loves this diet and just by making the switch has already improved her kidney functions.
22 Apr 2019

20 year old cat loves it!

We got the sample pack from the vet and she went for the S dry food immediately! Her coat looks great and she is more active, as well. Hoping this gives her another few years with us! Our other cat loves the food too.
27 Jan 2019

Seeing improvement already

I was given a sample kit from my Vet and set out all the dry choices in different locations in the house. I switched out the locations so I knew that wasn't a factor. My 15 year old kitty chose Renal Support S dry food. The bag ran out while I still have the other dry samples left. I had to wait for the Vet to order a real bag and was afraid she'd forget she liked it. Not so, she is now on RS S and we are both happy.
Jenny Z
23 Nov 2018

Cat has been enjoying and eats regularly!

My cat has been on S for nine months now and still eats regularly. When he was first diagnosed I didn't know how my cat would respond. So happy that this food is liked - my cat eats better on this food than on the non-prescription premium foods.
08 Nov 2018

31 Oct 2018

cat liked it, all that matters

My cat liked it so that is all that matters. It is super difficult to get our cat to eat different food and especially when they are not feeling well. So if they actually eat a new diet, I am thrilled.
EKO the Cat
31 Oct 2018

Renal Diet Cats

The Vet recommended this diet because suspected kidney problems, based on test results. Have been using this and Can D. EKO loves it. He appears to be doing better. Has gained about one pound. Dr suggested 4 months and then retest. Two more months and we will see how this diet is really working. At this point, it looks like it’s working. New tests will tell.
mac mac
31 Oct 2018

fLeetwood mac (mac for short) the cat's food:

my wonderfuL 15 year oLd kitty cat nac Likes this food. :)
30 Oct 2018

Great option for my picky eater!

After trying the sampler pack (thank you for offering this!), my cat decided on Renal Support A dry food. Recently he changed his mind, and now "S" is all he'll eat. Thank you for having options!
30 Oct 2018

Perfect 'cookie' replacement

When my cat, Tony, was diagnosed with renal disease I knew we'd have to switch up his diet, thankfully he loves the wet food but I was worried about replacing his 'cookies' he has before bed every day, vet suggested trying the dry renal diet kibbles & it was a success! Tony loves them! & I love them because his coat his coat is more beautiful than it has been in years & the diet has made him like a kitten again! Thank you so much Royal Canin for bringing me & my cat so much joy & better health!