HELPS PREVENT STONES: Specialized adult cat food helps dissolve pure struvite stones and helps prevent calcium oxalate stones

WEIGHT MANAGEMENT: Low calorie cat food (10% less calories than Royal Canin Urinary SO Dry Cat Food) for ideal weight maintenance

BLADDER HEALTH: RSS methodology for cat bladder health helps lower the risk of crystal formation

S/O INDEX: The exclusive S/O Index creates an environment unfavorable to crystal formation in the bladder to help support urinary health

When your cat has urinary issues, easing their discomfort requires special care. But with the help of your veterinarian and Royal Canin, there’s not just hope—there can be a true difference.

This veterinary-exclusive dry cat food was developed to nutritionally support your adult cat’s urinary tract and bladder health. It increases the amount of urine your cat produces to help dilute excess minerals that can cause crystals and stones. Moderate calorie content (10% less than Royal Canin Urinary SO dry cat food) helps them maintain a healthy weight. Relative Super Saturation (RSS) methodology is used to help lower ion concentration in urine, which contributes to stone formation. This formula promotes a urinary environment unfavorable to the formation of both struvite and calcium oxalate crystals. Lower urinary tract issues may be a recurring concern for some cats. Talk to your veterinarian about keeping your cat on this urinary cat food for long-term urinary support. And ask them about the right Royal Canin wet cat food and treats to complement your cat’s diet.

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ContentBlockDailyPortion

Discover our tool that calculates the daily portion for your pet. Fill in your pet's information and you will get their daily feeding recommendation. In case of weight issues, do not hesitate to consult your vet to adapt this portion. Note that this feeding recommendation is more precise than the feeding table, therefore the values may slightly differ.

Calculate

Chicken by-product meal, brewers rice, corn, corn gluten meal, powdered cellulose, wheat gluten, natural flavors, chicken fat, salt, fish oil, potassium chloride, calcium sulfate, egg product, sodium bisulfate, vegetable oil, sodium pyrophosphate, DL-methionine, fructooligosaccharides, monocalcium phosphate, choline chloride, vitamins [DL-alpha tocopherol acetate (source of vitamin E), 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], taurine, trace minerals [zinc proteinate, zinc oxide, manganese proteinate, ferrous sulfate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], marigold extract (Tagetes erecta L.), L-carnitine, rosemary extract, preserved with mixed tocopherols and citric acid.

Calorie Content

This diet contains 3277 kilocalories of metabolizable energy (ME) per kilogram or 275 kilocalories ME per cup on an as fed basis (calculated).

Nutrient Amount
Crude Protein (min)32.0%
Crude Fat (min)9.0%
Crude Fat (max)13.0%
Crude Fiber (max)9.3%
Moisture (max)8.0%
Calcium (max)1.4%
Phosphorus (max)1.3%
Magnesium (max)0.08%.

Dry Feeding

Cat Weight Low Activity Medium Activity
4.4 lb (2 kg) 3/8 cup (29 g) 3/8 cup (36 g)
6.6 lb (3 kg) 1/2 cup (39 g) 5/8 cup (49 g)
8.8 lb (4 kg) 5/8 cup (48 g) 3/4 cup (60 g)
11 lb (5 kg) 5/8 cup (56 g) 7/8 cup (70 g)
13.2 lb (6 kg) 3/4 cup (64 g) 1 cup (80 g)
15.4 lb (7 kg) 7/8 cup (71 g) 1 cup (89 g)
17.6 lb (8 kg) 7/8 cup (78 g) 1 1/8 cups (98 g)

Mixed Feeding

Cat Weight Cans / Day Low Activity Medium Activity
4.4 lb (2 kg) 1 1/8 cup (10 g) 1/4 cup (19 g)
6.6 lb (3 kg) 1 1/4 cup (20 g) 3/8 cup (32 g)
8.8 lb (4 kg) 1 3/8 cup (29 g) 1/2 cup (44 g)
11 lb (5 kg) 1 1/2 cup (37 g) 5/8 cup (56 g)
13.2 lb (6 kg) 1 1/2 cup (45 g) 3/4 cup (67 g)
15.4 lb (7 kg) 1 5/8 cup (52 g) 7/8 cup (77 g)
17.6 lb (8 kg) 1 3/4 cup (59 g) 1 cup (87 g)
Urinary SO Moderate Calorie Dry Cat Food

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Customer reviews

Ili07
30 Oct 2018

Great food and my cats love it

My cats have been on this urinary SO moderate calorie diet for over 5 years after a urinary blockage and Thank God and to this food they haven’t had another urinary blockage.
Laura E
30 Oct 2018

Cats love it

This food was prescribed by my vet and it helps prevent renal problems as well as help keep my cats at a normal weight. Best of all, the cats love it!
Katielynnw87
24 Oct 2018

Cats prefer the taste!

I have tried other prescription urinary diets but all 3 of my cats turn up their noses to the other brands. My boys love the flavor of SO and the moderate calorie keeps them at a great weight! They always seem full, and munch it right down!
Tracy32
22 Oct 2018

Great food

I started buying this food about 6 months ago and my cats love it. I have had no problems with either one of my male cats having crystals in their urine since.
Grey locket
21 Oct 2018

Works EXACTLY as promised!!

Helps maintain desired weight, plus she loves it too.
Lija
16 Oct 2018

JanM
14 Oct 2018

Save My Cat

Years ago my cat Leo had urinary issues and almost died. The vet told me he needed to be on a special food for this issue. I tried various brands and my cat did not like any of them canned or dry. Then your urinary so dry food became available through my vet and Leo loves it. He has been eating it for almost 10 years now. Thank goodness I don't have to go to the stress of finding foods for him, he has never stopped eating it.
Serious cat lady
14 Oct 2018

AMAZING FOOD!

I have been feeding this food to my cats for over seven years. It has been the greatest blessing for my baby boy. He was in the hospital for a week with a severe and life-threatening crystal blockage and I almost lost him. I was crushed. I drove over 25 miles one way every day to visit him and let him know I was still there and loved him. That was seven years ago. He has been on this food since and has never had any issues of any kind again. I cannot say how grateful I am that Royal Canin produces a food that is so miraculous! All of my kids love this food and my boy is happy and healthy! He even uses the toilet now, teaching himself after his hospital stay. Thank you so much Royal Canin!
cat123
11 Oct 2018

Saving our cat from surgery

My cat needed to be on this formula due to urine crystals and surgery requiring a need for this special prescription formula. This food has made it possible for him to not require another surgery since he has no more urinary issues and he has been on it for a few years now. He loves the food too, which is an added advantage. Life saving for our cat!
Kayly
10 Oct 2018

My cats like it!

Prevents urinary problems and my cats like the taste!