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.

Working towards a sustainable future

Our belief that pets make our world better inspires and gives life to our purpose of making a better A BETTER WORLD FOR PETS ™

Discover more
Labrador Retriever adult sitting with its owner outdoors
Recyclability Content Block

Where to recycle your Royal Canin packaging?

Explore your local options.

Discover more
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

Still have questions about this product?

Find out how to reach us, and get in touch.

Ask a question

Customer reviews

Liz19
22 Oct 2019

Helps keep healthy!

My cats have been eating the Feline Urinary SO dry food for years and they love it! Since they started on it, they have had no urinary problems. I highly recommend Royal Canin Dry Feline Urinary SO for cats that need this type of food!
gbreeda8
22 Oct 2019

Solved Urinary Issues

My 3 cats have been on the Urinary SO since they were 2 years old because one of the cats had continuous bladder issues. This solved the problem, and she hasn't had a flare up since. All 3 cats seem to really love it!
MyDestiny56
22 Oct 2019

I feel at ease

I love the fact that Royal Canin has so many different foods to choose from that specifically target your pet’s needs. It is such a relief knowing I am trying my best to feed my pet a food brand I trust.
NoleMom
22 Oct 2019

cgatto
22 Oct 2019

Life Saver

After my one-year-old rescue kitty almost died from urinary crystals this food was literally a lifesaver. After getting him home from the hospital we tried every brand of prescription food the vet suggested and he would not eat any of them, and I mean not eating anything for three days. I remembered when my other cat was young and needed an oral health cat formula she loved Royal Canin. I bought a bag of urinary SO and before I could even get it out of the bag he was all over me. We have not had to go back to the vet for crystals again and it has been over a year. Both my cats eat this daily and they are happy and healthy and have beautiful coats. So glad I found this food and I recommend it to anyone who’s cat suffers from the same thing.
Bgwalker
22 Oct 2019

Easily understood what it's for

I've been feeding for a while and it has helped control uti's my cat was getting so frequently.
KatieH239
22 Oct 2019

Cats love the taste

My vet recommended this for my senior cats. The love the taste and look forward to meal time.
lindajeannes
22 Oct 2019

Tells what it is. Easy to remember

My 2 cats have been on this for 4 years and have not had a UTI since. So it works great.
PattyD
22 Oct 2019

Royal Canin SO is Perfection

We have 5 wonderful rescue kitties. This is my experience,I had a cat that died because of Kidney issues, and then I learned about Royal Canin SO. Even though I've had cats my whole life, I never knew that Kidney issues are very common for cats. I have tried switching to Science diet instead of Royal Canid but returned to Royal Canin. The cats just do better with Royal Canin. Thank You Royal Canin for a wonderful food!
KittiesandAussies
22 Oct 2019

Saved my kitty's life

My cat had urine crystals and almost died... our vet recommended putting all of our cats on Urinary SO... no more problems and our other kitties are healthy as well. And they like the food!