F = Flavorful to help stimulate appetite in cats and encourage eating with triangle-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

Your vet recommended Royal Canin Renal Support F for a reason. This highly palatable dry cat food is specially formulated to care for the kidney health of adult cats under veterinary supervision. “F” stands for Flavorful, and this formula can help stimulate your cat’s appetite. The triangle-shaped dry kibble can be mixed with other Royal Canin Renal Support formulas, which have a variety of palatable aromas and dry or wet forms to help find the right combination to get your cat eating again. And the energy-dense diet provides nutritional support in smaller portions, since cats with reduced kidney function have decreased appetites. Plus, it contains a precise antioxidant complex, fatty acids from fish oil, low phosphorus, and targeted protein levels to help support kidney function.

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Labrador Retriever adult sitting with its owner outdoors

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

Calorie Content

This diet contains 3836 kilocalories of metabolizable energy (ME) per kilogram or 376 kilocalories ME per cup on an as fed basis (calculated).

Nutrient Amount
Crude Protein (min)24.0%
Crude Protein (max)28.0%
Crude Fat (min)15.0%
Crude Fiber (max)5.9%
Moisture (max)8.0%
Eicosapentaenoic + Docosahexaenoic acid (EPA + DHA) (min)0.24%
Phosphorus (max)0.62%
Vitamin E (min)160 IU/kg
Ascorbic acid* (min)350 mg/kg.

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

Dry Feeding

Cat Weight Overweight Normal Lean
lb kg Cups (g) Cups (g) Cups (g)
4.4 2 1/4 25 3/8 32 3/8 38
5.5 2.5 1/4 30 3/8 37 1/2 45
6.6 3 3/8 34 3/8 42 1/2 51
7.7 3.5 3/8 38 1/2 47 5/8 57
8.8 4 3/8 42 1/2 52 5/8 62
9.9 4.5 1/2 45 5/8 57 3/4 68
11 5 1/2 49 5/8 61 3/4 73
12 5.5 1/2 52 5/8 65 3/4 78
13 6 1/2 55 3/4 69 7/8 83
14 6.5 5/8 59 3/4 74 7/8 88
15 7 5/8 62 3/4 77 1 93
17 7.5 5/8 65 7/8 81 1 98
18 8 3/4 68 7/8 85 1 102
19 8.5 3/4 71 7/8 89 1 1/8 107

Mixed Feeding with Renal E Wet

Cat Weight Cans Normal Lean
4.4 lb (2 kg) 1/2 1/8 cup (11 g) 1/8 cup (18 g)
6.6 lb (2.5 kg) 1/2 1/8 cup (17 g) 1/4 cup (24 g)
7.7 lb (3 kg) 1/2 1/4 cup (22 g) 1/4 cup (30 g)
8.8 lb (3.5 kg) 1/2 1/4 cup (27 g) 3/8 cup (36 g)
9.9 lb (4 kg) 1/2 3/8 cup (32 g) 3/8 cup (42 g)
10 lb (4.5 kg) 1/2 3/8 cup (36 g) 1/2 cup (47 g)
11 lb (5 kg) 1/2 3/8 cup (41 g) 1/2 cup (53 g)
12 lb (5.5 kg) 1/2 1/2 cup (45 g) 5/8 cup (58 g)
13 lb (6 kg) 1/2 1/2 cup (49 g) 5/8 cup (63 g)
14 lb (6.5 kg) 1/2 1/2 cup (53 g) 3/4 cup (68 g)
15 lb (7 kg) 1/2 5/8 cup (57 g) 3/4 cup (72 g)
17 lb (7.5 kg) 1/2 5/8 cup (61 g) 3/4 cup (77 g)
18 lb (8 kg) 1/2 5/8 cup (65 g) 7/8 cup (82 g)
19 lb (8.5 kg) 1/2 3/4 cup (69 g) 7/8 cup (86 g)
Renal Support F Dry Cat Food (Packaging May Vary)

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Customer reviews

Sarah hassan
07 Jan 2022

my experience

I don't really know where to start My cat was just sleeping all the time and unhappy, lethargic and nervous and after a day of taking Royal Canin kidney support she came back alive again, active and playing I can't express my happiness enough nor thank you even there is only one negative and that is the high price of wet food Of course, no one wants to give his cat with kidney disease dry food and the matter gets worse. I wish the prices of wet food were reasonable, but it costs a budget, and if we look at the ingredients, it is not expensive, and with this result it deserves
For Romeo
30 Oct 2019

He Loves It!

I use Renal F, S and A dry food. I combine them to keep things interesting for my Kitty and call it "Party Mix." He loves them all and never hesitates to nom up his crunchies. If only it was as easy to get him to eat his renal wet food. I give him wet as well to make sure he gets enough moisture, but he would be thrilled if I just let him eat any of the Royal Canin renal dry food.
30 Oct 2019

28 Oct 2019

What's A Pet Owner to Do?

While my cats would rather eat other "non-prescription" food and other food is less expensive, Royal Canin Renal Support is the only food the veterinarian recommended. My cat has been on this diet for a year and I have not seen any improvement in her condition, but it has not gotten worse either. I will keep working a full-time job in order to feed my four-legged children!
24 Oct 2019

This food, along with the other lettered ones in the renal family were prescribed to my cat with kidney disease. He, as well as the others love all the flavors. It is low in protein and phosphorus, which is a necessity in his diet. My boys get excited for food time when they see this in their bowls.
22 Oct 2019

My cat loves this!

When my cat was diagnosed with Chronic Kidney Failure, I had trouble finding food he enjoyed. This is the one kind he really likes!
22 Oct 2019

Vet prescribed for feline Renal Health

My vet prescribed this about a year ago for my 10 year old outdoor female, spayed cat. Her blood tests were starting to show early signs of renal disease. Within a few months her condition had greatly improved. This food was the only real change made. For a now 11 year old cat, -she runs and jumps like a kitten again. She plays all day long, and catches field mice, snakes and lizards on a weekly basis. Most importantly she loves the food and will actually sit up and beg for it!
22 Oct 2019

Great taste!!!

I served this food to my cat who has end stage renal disease and very particular on what she will eat and she is indeed eating it! Thank goodness!!!
22 Oct 2019

My cats love it!

I have several older cats that need to be on a renal diet and they love Renal Support F.
09 Oct 2018

My picky cat loves this food!

My picky kitty had to have her food switched to a diet that would be appropriate for her kidney disease and this one is the winner! I can tell that the Royal Canin Renal diets have more flavorful kibbles compared to other brands that I tried. My cat refused to eat the other non-Royal Canin Renal foods and I was getting scared that I wouldn’t find anything that she enjoyed eating and that was appropriate for her health. I am so happy that I tried this food and that my little Meow just gobbles it up each time her bowl is filled.