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

Billyspixie
31 Oct 2019

My cat loves this food!

Thank you so much for making a food that my cat loves. It's an amazing product that truly works & keeps my cat healthy & stone free!
Marie03
31 Oct 2019

Great Health Benefits

I’ve been feeding the Urinary SO dry food to my cats for 5+ years. I discovered this food when I had to take my cat to the Emergency Clinic because he couldn’t urinate. It turns out that he had crystals in his urine. The staff recommended that I change his food & my vet recommended trying this one. I’m happy to report that he has never had an issue since. In fact, I feed it to both of my cats. They love the taste of it and it gives them a soft coat.
Michel56
31 Oct 2019

Cats love it!

I’ve been feeding this food to my 20 plus rescue cats for 13 years. A few of them had to have it because of bladder stones. Just have 10 cats now and still eating it.
Imfixn2
31 Oct 2019

Been using for years!

My elderly cat years ago had urinary issues and the vet recommended Royal Canin Urinary SO. She never had another problem the rest of her long life. As I had added cats to the household, they were fed the same diet. 4 other cats have had this diet and not one of them have had an issue. The fact that they eat it every day without complaint says a lot as well. No turned up noses at the food bowls. My current cats are 12, 6, and 5 and have eaten this food since they moved on from kitten food. All 3 are healthy and happy. They still love their nap time, as you can see in the picture, but they have tons of energy. Even the 12 year old plays like a kitten. Thanks Royal Canin for a great formula!
Donza76
30 Oct 2019

Resolved my cat's issues

Ive been using this product for some time and it eliminated my cat's urinary problems.
OBRABY
30 Oct 2019

Cat loves it!

We give it to our family car due to medical reasons. He does very well and eats it up.
Zippee
30 Oct 2019

Cat loves it.

My car has been on this food for 2 years now. He loves it and I dont worry about crystal issues.
Streets and Bell Hoppers
30 Oct 2019

Awesome Product — Loved by BOTH Cats!!

Our vet placed 1 of our two cats on this formula for urinary track well being and both LOVE. It meets the feline taste test while protecting the health of our cats : ). Win-Win.
Sady
30 Oct 2019

Life saver for cats with UTIs

My male has been on URINARY SO for 10 years. He was having frequent UTIs. My vet suggested this food & he's now almost 17 years old. Not one re-occurence ! The best cat food ever!
Gangee
30 Oct 2019

Brucies saving grace food

my vet placed my cat on this brand for his crystals and he has shown such a difference its like night and day.