Struvite dissolution

Helps dissolve all types of struvite stones.


Helps lower the concentration of ions contributing to struvite and calcium oxalate crystal formation.

Urine dilution

Urine dilution makes the urine less liable to form struvite and calcium oxalate stones.

Low magnesium

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

Complete dietetic feed for adult dogs. Formulated to dissolve struvite stones and reducing their recurrence through its urine acidifying properties, its low level of magnesium and its restricted level of protein but of high quality.ROYAL CANIN® Urinary S/O is specifically formulated with the nutritional needs of dogs with urinary sensitivities in mind and is available in 2kg, 7. 5kg and 13kg bags. ROYAL CANIN® Urinary S/O helps to dissolve all types of harmful struvite stones that may form in your dog’s bladder. It also helps to dilute your dog’s urine, making it less likely for calcium oxalate stones and struvite stones to form in the first place. The utilisation of RSS methodology helps to lower the concentration of ion in your dog’s urine, this in turn contributes to minimising the likelihood of bladder stones forming. As magnesium is also a natural component of struvite crystals, ROYAL CANIN® Urinary S/O is formulated with a reduced level of magnesium. As part of the ROYAL CANIN® Veterinary Range, it is important that this product is only given to your pet when recommended by a veterinary professional. To cater to each dog’s individual preferences, ROYAL CANIN® Urinary S/O is also available as wet food in either a delicious gravy or a soft and tasty loaf. If you’re considering mixed feeding, simply follow our feeding guidelines to ensure your dog gets an accurate amount of both wet and dry food for optimal benefit.


Discovery now the ideal tool to calculate the perfect portion for your pet.

ANALYTICAL CONSTITUENTS: Protein: 18.0% - Fat content: 17.0% - Crude ash: 6.4% - Crude fibres: 2.2% - Calcium: 0.5% - Phosphorus: 0.5% - Sodium: 1.1% - Chloride: 2.14% - Potassium: 0.8% - Magnesium: 0.04% - Sulphur: 0.5% - Urine acidifying substances: Calcium sulphate (0.88% ), DL- methionine (0.6% )- EPA & DHA: 0.21% .
Feeding rules for 24h:Dry onlyMix: wet + dryDry onlyMix: wet + dryDry onlyMix: wet + dry
Dog weight (kg)ThinThinNormalNormalOverweightOverweight
254 g28 g + 1 pouch48 g21g + 1 pouch41 g15 g + 1 pouch
5108 g81 g + 1 pouch95 g69g + 1 pouch82 g56 g + 1 pouch
10181 g155 g + 1 pouch159 g163g + 1 pouch138 g111 g + 1 pouch
15245 g219 g + 1 pouch216 g190g + 1 pouch187 g160 g + 1 pouch
20305 g278 g + 1 pouch268 g242g + 1 pouch232 g205 g + 1 pouch

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