HELPS DISSOLVE STONES: Innovative urinary tract cat food helps dissolve pure struvite stones and helps prevent calcium oxalate stones

BLADDER HEALTH: Lowers the risk of crystal formation using RSS methodology for cat bladder health

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

HELPS PREVENT STONE REOCCURANCE: Specialized diet, with a reduced level of magnesium, helps prevent struvite stones from reoccurring

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. 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. And this specialized nutrition, with a reduced level of magnesium, helps dissolve pure struvite stones and prevent struvite stones from forming. 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, chicken fat, wheat gluten, natural flavors, wheat, salt, powdered cellulose, fish oil, potassium chloride, sodium bisulfate, calcium sulfate, sodium pyrophosphate, vegetable oil, fructooligosaccharides, 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], DL-methionine, taurine, monocalcium phosphate, 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.), rosemary extract, preserved with mixed tocopherols and citric acid.

Calorie Content

This diet contains 3659 kilocalories of metabolizable energy (ME) per kilogram or 315 kilocalories ME per cup on an as fed basis (calculated).

Nutrient Amount
Crude Protein (min)32.5%
Crude Fat (min)13.0%
Crude Fiber (max)4.0%
Moisture (max)8.0%
Calcium (max)1.26%
Phosphorus (max)1.26%
Magnesium (max)0.1%.

Dry Feeding

Cat Weight Low Activity Medium Activity High Activity
4.4 lb (2 kg) 1/4 cup (26 g) 3/8 cup (33 g) 1/2 cup (39 g)
6.6 lb (3 kg) 3/8 cup (35 g) 1/2 cup (44 g) 5/8 cup (52 g)
8.8 lb (4 kg) 1/2 cup (43 g) 5/8 cup (53 g) 3/4 cup (64 g)
11 lb (5 kg) 5/8 cup (50 g) 3/4 cup (63 g) 7/8 cup (75 g)
13.2 lb (6 kg) 5/8 cup (57 g) 7/8 cup (71 g) 1 cup (85 g)

Mixed Feeding

Cat Weight Cans / Day Low Activity Medium Activity High Activity
4.4 lb (2 kg) 1/2 1/4 cup (16 g) 1/4 cup (24 g) 3/8 cup (30 g)
6.6 lb (3 kg) 1 1/8 cup (15 g) 1/4 cup (26 g) 3/8 cup (35 g)
8.8 lb (4 kg) 1 1/4 cup (23 g) 3/8 cup (37 g) 1/2 cup (48 g)
11 lb (5 kg) 1 3/8 cup (31 g) 1/2 cup (47 g) 3/4 cup (60 g)
13.2 lb (6 kg) 1 3/8 cup (37 g) 5/8 cup (57 g) 7/8 cup (72 g)
Urinary SO Dry Cat Food

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Customer reviews

Jazzer
22 Oct 2019

Great kibble

My Kitties get wet dry food in the morning and evening. This is the perfect supplement to not add too many calories, while protecting their urinary tract health.
Oddjoce
22 Oct 2019

Keeps my cat happy

My cat was peeing on everything. Turned out he had crystals in his urine. The vet recommended the SO version of Royal Canin and we haven't had any bladder problems since.
blueyez2bru
22 Oct 2019

My cats absolutely love this food!!

I switched from Science Diet to Royal canine. I have 2 cats that have had urinary problems however we have 5 cats and they are all on the Royal Canine.
mrmvm666
22 Oct 2019

Cats Love This

I have 4 cats who all eat the same food. They love this food, especially when freshly opened. The seal tight bags are awesome, allowing you to keep the food fresh between feedings. Am overall very satisfied
mistievans456
22 Oct 2019

great product

My cat have been on this for over a year and i am so happy with the product!
MacNChance
22 Oct 2019

The only thing that kept my cat from having Crysta

My cat have to have this food and order pretty much to stay healthy and alive. He was getting urinary crystals all the time and until this food they were going to have to have major surgery done to him in order to stop the crystals from reoccurring. Thanks for this food he’s healthy and Krystal free… I just wish it was more affordable!
Lkourn
22 Oct 2019

Great product

My car Rusty ended up in the hospital for many days because of crystals in his bladder. We switched to Royal Canin Urinary SO . He has been great ever since. It has been over 4 yrs. I have all my 3 boys eating this dry food!
Orville and Willie
22 Oct 2019

Royal Canin Urinary SO Dry cat food

Have been using this food for years since my cat had urinary issues resulting in surgery. The vet said to use only this food. My cats love it.
wegieland
22 Oct 2019

good for all

although only one of our cats requires this diet, all of them love it! would recommend this for anyone needing it.
Angela T55
22 Oct 2019

I No Longer Lose My Male Cats Prematurely

My vet recommended Feline Urinary So for my female cat that has bladder stones. Prior to this I had lost quite a few male cats to urinary blockages. I started feeding the Feline Urinary So to all my male cats as well and have not had a single blockage problem since. Thanks to your product, I no longer have to fear losing my male cats to this most preventable problem. Thanks Royal Canin!