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Vet Products

Feline Urinary So™ Moderate Calorie Dry Cat Food

Feline Urinary SO Moderate Calorie is a highly digestible, palatable, complete and balanced adult cat food formulated to aid in the nutritional management of calcium oxalate and struvite urolithiasis.

The benefits

  • Relative super saturation (RSS) methodology predicts the crystallization potential of urine. RSS is used to develop diets for cats prone to both struvite and oxalate urolithiasis.
  • Moderate calorie content, compared to Feline Urinary SO, to help maintain ideal weight.

Product description

FOUNDED BY A VETERINARIAN, ROYAL CANIN has over 40 years experience in Health Nutrition. Our work with veterinarians, pet nutritionists, breeders, and cat professionals from around the world has provided us with knowledge about the specific nutritional requirements of cats. This knowledge has allowed us to formulate the precise diet for your cat’s special needs.
Chicken by-product meal, brewers rice, corn gluten meal, corn, powdered cellulose, wheat gluten, chicken fat, natural flavors, salt, potassium chloride, fish oil, calcium sulfate, monocalcium phosphate, egg product, sodium bisulfate, vegetable oil, DL-methionine, fructooligosaccharides, choline chloride, vitamins [DL-alpha tocopherol acetate (source of vitamin E), biotin, niacin supplement, D-calcium pantothenate, pyridoxine hydrochloride (vitamin B6), riboflavin supplement, vitamin A acetate, thiamine mononitrate (vitamin B1), folic acid, vitamin B12 supplement, vitamin D3 supplement], glucosamine hydrochloride, taurine, trace minerals [zinc proteinate, zinc oxide, manganese proteinate, ferrous sulfate, manganous oxide, copper sulfate, calcium iodate, copper proteinate, sodium selenite], L-carnitine, marigold extract (Tagetes erecta L.), rosemary extract, preserved with mixed tocopherols and citric acid.
Crude Protein (min) 32.0%
Crude Fat (min) 9.0%
Crude Fiber (max) 9.3%
Moisture (max) 8.0%
Glucosamine* (min) 1425 mg/kg

*Not recognized as an essential nutrient by the AAFCO Cat Food Nutrient Profiles.

Weight Tendency to become Overweight Ideal Weight
4.4 lb (2.0 kg) - 3/8 cup (36 g)
5.5 lb (2.5 kg) - 1/2 cup (43 g)
6.6 lb (3.0 kg) - 5/8 cup (49 g)
7.7 lb (3.5 kg) - 5/8 cup (54 g)
8.8 lb (4.0 kg) - 3/4 cup (60 g)
9.9 lb (4.5 kg) - 3/4 cup (65 g)
11.0 lb (5.0 kg) 5/8 cup (56 g) 7/8 cup (70 g)
13.2 lb (6.0 kg) 3/4 cup (64 g) 1 cup (80 g)
15.4 lb (7.0 kg) 7/8 cup (71 g) 1 cup (89 g)
17.6 lb (8.0 kg) 7/8 cup (78 g) 1 1/8 cups (98 g)
19.8 lb (9.0 kg) 1 cup (85 g) 1 1/4 cups (106 g)
22.0 lb (10.0 kg) 1 1/8 cups (92 g) 1 3/8 cups (114 g)

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Customer reviews

Fiona and family
01 Dec 2018

Saved my little lady

We adopted our Maine Coon mix Fiona from the local shelter in March 2018. She lived on the streets for who knows how long, then the shelter, so we don't know anything about her life before us. August 2018 she started having accidents around the house and she was in a lot of pain. I took her to the vet and he suspected crystals/stones since we didn't know her history. Thankfully it was just crystals. Within 3 days of eating Royal Canin Urinary SO dry food, she was back to herself. Royal Canin saved our little lady from a life of urinary pain.
Royal Canin response
The tongue photo is hilarious!
11 Nov 2018

My cat likes it

I’m happy with the cat food. My cat hasn’t been sick Since
08 Nov 2018

Veterinarian- Excellent results!

As a practicing veterinarian, I see my fair share of overweight, blocked male cats. This is a superb diet and I highly recommend for my patients with known urinary conditions such as stones. See before and after pictures simply 30 days on the RC Feline S/O Mod. Cal diet--remarkable!
Royal Canin response
Wonderful feedback, thank you so much for sharing your experience
06 Nov 2018

Great Taste and Controls Weight!

My cats love the taste of this food and it helps to control their weight. Indoor cats just don't get as much exercise as they should and tend to put on weight. With this Royal Canin Feline Urinary SO Moderate calorie they are doing great!
Jennifer LJ
06 Nov 2018

Great taste!

My male cats have not had any bladder stone issues since being on this food! My vet said it was a great food to have my male kitten on too. I volunteer at our local animal shelter and have been able to recommend this product to others to try. My cats love the taste of this food!
06 Nov 2018

Great name definitely is informative

Been using this for about 3 years. This food definitely help saved my cat and has help him lose a little more then a pound.
05 Nov 2018

Great product

I was skeptical of starting another prescription diet; however I was desperate to find some way to help reduce the number of UTIs my cat was contracting. It's expensive but if it keeps working, it's well worth it.
Mom to Two Cats
05 Nov 2018

cats love it!

Both my cats love this food. The big boy (with the crystals problem) empties his dish and his feeding toy. The little girl (no crystals) also empties her dish. I feed both wet and dry food to my cats. The smaller bag is just the right size to keep the product fresh.
05 Nov 2018


My cat is 11 now. She has been eating this food exclusively for about 3 years now. She was having problems urinating. This for had really helped and she seems to like the taste too. Occasionally I buy the wet food for a little treat.
05 Nov 2018

Cats love it.

I have been using this product for 4 years now and it has helped my kitties with crystals.