Provides nutrition that aids in the management of pure struvite uroliths

Moderate calorie content, 10% less than Feline URINARY SO dry, to help maintain ideal weight.

Relative Supersaturation (RSS) methodology predicts the crystallization potential of urine. RSS is used to develop diets for cats prone to both struvite and oxalate urolithiasis.

Specially formulated to assist in the management of lower urinary tract disease in cats requiring a moderate fat content, or who are more susceptible to weight gain.

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Labrador Retriever adult sitting with its owner outdoors

Brewers rice, chicken by-product meal, wheat gluten, corn flour, powdered cellulose, corn gluten meal, chicken fat, natural flavors, potassium chloride, fish oil, salt, vegetable oil, potassium citrate, vitamins[vitamin A acetate, vitamin D3 supplement, DL-alpha tocopherol acetate (source of vitamin E), niacin supplement, D-calcium pantothenate, riboflavin supplement, pyridoxine hydrochloride (vitamin B6), thiamine mononitrate (vitamin B1), folic acid, biotin, vitamin B12 supplement], fructooligosaccharides, DL-methionine, calcium carbonate, choline chloride, taurine, monocalcium phosphate, trace minerals[zinc sulfate, zinc oxide, manganese proteinate, ferrous sulfate, copper proteinate, calcium iodate, sodium selenite], marigold meal, L-carnitine, rosemary extract, preserved with mixed tocopherols and citric acid.

Calorie Content

This diet contains 3305 kilocalories of metabolizable energy (ME) per kilogram or 278 kilocalories ME per cup on an as fed basis (calculated).

Crude Protein (min)32.0%, Crude Fat (min)9.0%, Crude Fat (max)13.0%, Crude Fiber (max)9.0%, Moisture (max)7.5%, Calcium (max)1.25%, Phosphorus (max)1.3%, Magnesium (max)0.08%.

Dry Feeding

Weight Normal Overweight
4.4 lb (2 kg) 3/8 cup (36 g) 3/8 cup (29 g)
6.6 lb (3 kg) 5/8 cup (48 g) 1/2 cup (39 g)
8.8 lb (4 kg) 3/4 cup (59 g) 1/2 cup (47 g)
11 lb (5 kg) 7/8 cup (69 g) 5/8 cup (55 g)
13 lb (6 kg) 1 cup (79 g) 3/4 cup (63 g)
18 lb (8 kg) 1 1/8 cups (97 g) 7/8 cup (77 g)

Mixed Feeding

Weight Can + Normal Overweight
4.4 lb (2 kg) 1 can + 1/4 cup (18 g) 1/8 cup (10 g)
6.6 lb (3 kg) 1 can + 3/8 cup (30 g) 1/4 cup (20 g)
8.8 lb (4 kg) 1 can + 1/2 cup (41 g) 3/8 cup (29 g)
11 lb (5 kg) 1 can + 5/8 cup (51 g) 1/2 cup (37 g)
13 lb (6 kg) 1 can + 3/4 cup (60 g) 1/2 cup (45 g)
18 lb (8 kg) 1 can + 7/8 cup (78 g) 3/4 cup (59 g)
Royal Canin Veterinary Diet Feline Urinary SO Moderate Calorie Dry Cat Food

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Customer reviews

Moe_the_Tuxedo
10 May 2021

Great Product

I put my cat on this after a urinary blockage. He loves it and is doing great. He has slimmed down a lot from his previous weight of 21 pounds (he's part Maine Coon) and his fur doesn't get matted like it did before. The calming effects of it are very noticeable as well. He used to be scared of everyone and everything. He is much more calm and has really come out of his shell. He is almost 7 and it has been a great change of diet for him. My other 3 cats love it as well and will eat from his bowl whenever they can.
Royal Canin response
Great to hear he is doing so well!
Smzinnoho
01 Apr 2021

New for ula is awful

My cat shave both gained weight after the formula change. No happy with wheat being added. Switching to another brand
Jhawes
17 Feb 2021

Good bad all of a sudden

Have been getting for years although past few months my cats have gained weight and have been vomiting.
ShelleyS
27 Nov 2020

7 sick cats!

I've been feeding the Urinary SO to 5 of my 7 cats for quite some time. I opened a new bag last night. The cats did not exhibit their normal enthusiasm. They had a couple of bites and walked away. The two cats who don't normally eat it took the opportunity to "sneak" some as a treat. Today I have 7 lethargic cats who won't eat. The cat who ate the most food last night has vomited once per hour for the last 7 hours. After reading other reviews, I am now aware that wheat has been added. My vomiting cat is very allergic to wheat. I will be working with my vet to come up with an alternative food.
For Jackson
18 Oct 2020

Very disappointed new formula

I have purchased this food now for about close to two years, and my cats do not like the new formula. Typically they can eat the top 1/4-1/2 of the bag, but past that even the cat that will eat anything, walks away from it. I close the bag tightly and even flip it upside down to see if that works if some flavors are settling. They also get sick on it like the others I see in the review. They are also opposed to the wet version as well. I have to throw 1/2 of the bag away every time I purchase it. Very disheartening. The old formula was a little better. It is very challenging since the boys need the SO food. We even buy the medium sized bag.
Heather38
27 Aug 2020

Formula Change

My cat used to eat the old formula (green label) and we had no issues. I called Royal Canin when the bag switched to the (gold label) and was told that they added "Wheat" to the ingredients. This may be the problem why everyone's cats no longer like the food or vomit a lot when eating this food. Wheat can be bad especially if your cats is allergic to wheat which a lot of cats are. Also, the same thing with the wet SO food, my cat will no longer eat it.
EricaR
12 Aug 2020

Cat Gained Weight and Vomited with new Formula!

I used to feed the RCVD Urinary SO to both my cats and they were overweight and would have the occasional hairball but I was working in feeding them less and doing stuff to help hairballs. When the Moderate Calorie diet version came out my Vet recommended it so of course I switched and ever since both my cats vomit without hairballs, one of the gained weight even though I have restricted the calories more and the other cat who loves to eat stopped eating it and was recently diagnosed with Diabetes (this is mot likely unrelated to the food however this is a very high carb diet which I didn’t not realize.) I will be switching my cat with Urinary issues to a different diet. The only good thing and the reason I gave 2 stars is because since being on the diet my cat didn’t get anymore struvite crystals.
AprilVetAssistant
19 Jul 2020

I am a veterinary assistant - Dissatisfied

I have worked in veterinary medicine for 8 years. I have all 3 of my male cats on urinary S/O or an Royal Canin S/O indexx food. The S/O Mod Cal food makes my cats excessively vomit and has done so for several months. This did not used to be the case. They used to love eating it and would hound me to be fed. Now when it put it down they just look at me. There is no way that Royal Canin hasn't changed their formula. I'm really annoyed about this and won't recommend it to clients. I recommend sticking with the regular Urinary S/O food that is not the Mod Cal diet or switching to another Royal Canin diet that has the S/O index in it. I also feed the Royal Canin Feline Dental Diet b/c it has the S/O index in it. I do not have problems with this food and my cats teeth (8 yrs old) look like a 2 yr old cat. I've never brushed their teeth and they've never had a dental.
LCpalmbay
08 Jul 2020

no bladder stone worries now

my female cat developed bladder stones and thankfully they were small enough to be flushed out without surgery thanks to my great vet. He recommended using prescription dry food. My cat loves this one and has had no issues and it's been at least six months. Highly recommend.
Royal Canin response
Wonderful to hear!
cinnamon802
26 May 2020

Mixed results after formula change

The first bag of Urinary SO Moderate Calorie dry food made my cat vomit after every meal. Royal Canin told my vet they couldn't think why that would happen and offered to switch the bag out for free "just in case". The first bag was my usual large bag (like 14lbs I think?). I asked for a replacement bag in the smaller size in case my cat continued to vomit and I was stuck with the extra food. She does NOT have an upset stomach and is not vomiting now that we're using the smaller replacement bag of the new formula. However she doesn't really seem to enjoy the flavor of it and making her eat is now a struggle, when before, well, she was on the moderate calorie for a reason.