Provides nutrition that aids in the management of pure struvite uroliths.

Relative Supersaturation (RSS) methodology predicts the crystallization potential of urine. RSS is used to develop diets that lower the concentration of ions contributing to struvite and calcium oxalate urolithiasis.

Increasing the urine volume reduces the saturation of urine with calcium oxalate and struvite crystals.

Reduced level of magnesium, a natural component of struvite stones.

Specially formulated to assist in the management of struvite and calcium oxalate crystals and stones in adult dogs.

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Labrador Retriever adult sitting with its owner outdoors


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.


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

Calorie Content

This diet contains 3717 kilocalories of metabolizable energy (ME) per kilogram or 320 kilocalories ME per cup on an as fed basis (calculated).

Crude Protein (min)16.0%, Crude Fat (min)15.0%, Crude Fiber (max)4.2%, Moisture (max)11.5%, Eicosapentaenoic Acid (EPA) (min)0.08%, Docosahexaenoic Acid (DHA) (min)0.05%, Calcium (max)0.63%, Phosphorus (max)0.7%, Magnesium (max)0.08%, Vitamin E (min)427 IU/kg, Lutein* (min)5 mg/kg.

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

Dry Feeding

Dog Weight Normal Overweight
4.4 lb (2 kg) 1/2 cup (48 g) 1/2 cup (41 g)
11 lb (5 kg) 1 1/8 cups (95 g) 1 cup (82 g)
22 lb (10 kg) 1 7/8 cups (159 g) 1 5/8 cups (138 g)
33 lb (15 kg) 2 1/2 cups (216 g) 2 1/8 cups (187 g)
44 lb (20 kg) 3 1/8 cups (268 g) 2 5/8 cups (232 g)

Mixed Feeding

Weight Can + Normal Overweight
4.4 lb (2 kg) 1/4 can + 1/8 cup (14 g) 1/8 cup (8 g)
11 lb (5 kg) 1/4 can + 3/4 cup (61 g) 1/2 cup (48 g)
22 lb (10 kg) 1/2 can + 1 1/8 cups (92 g) 7/8 cups (71 g)
33 lb (15 kg) 1/2 can + 1 3/4 cups (149 g) 1 3/8 cups (120 g)
44 lb (20 kg) 1 can + 1 1/2 cups (134 g) 1 1/8 cups (98 g)
Royal Canin Veterinary Diet Canine Urinary SO Dry Dog Food

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