One value that defines our innovation: The dog and cat comes first. For over 40 years, Royal Canin has worked with breeder partners and veterinary nutritionists to go ever further into innovation and precision to enable us to formulate nutritional solutions which perfectly meet dogs and cats’ real needs.

From the time they’re born until well into their golden years, dogs’ nutritional needs are constantly changing and their food should too. That’s why we offer a full range of products designed for every dogs life stage. 

From the time they’re kittens until they’re mature, cats’ nutritional needs are constantly changing and their food should, too. Your cat’s health matters, and that’s why we offer a full line of nutrition designed for every life stage as well as based on thier specific breed, lifestyle or special requirements. 

From the Industry

As a company that was founded by a veterinarian and that works closely with breeders, Royal Canin is committed to investing and supporting in the veterinary and breeder community.


Our Partnership

Because of its composition, a Royal Canin Health Nutrition food provides all essential nutrients measured out with utmost precision in order to contribute every day and on a long-term basis to the wellbeing and health of cats and dogs, according to their age, his size, his physiological condition and his breed.

Royal Canin is a global leader in pet health nutrition. In an industry that continues to adapt to popular trends, our mission remains the same: Observing them, learning from them, respecting them and recognising their differences is quite literally our life’s work. The goal of that work is to provide every dog and cat with the nutrition that is precisely right for their individual needs – needs that vary with the pet’s breed, environment, age, weight, gender, digestion, their genetic makeup and lifestyle. 

Urinary S/O

Urinary S/O
Product Bag Urinary S/O LP 34

Urinary S/O is formulated for the nutritional management of adult cats with lower urinary tract disease. Its urine acidifying properties and its low level of magnesium make it suitable for dissolving struvite stones and reducing their recurrence.  

Recommended for (indications):

  • Dissolution of struvite uroliths
  • Management of recurrent struvite and calcium oxalate urolithiasis using a single diet

 Not recommended for (contraindications): 

  • Chronic renal failure
  • Metabolic acidosis
  • Heart failure
  • Hypertension
  • Treatment with urine acidying drugs 
  • Pregnancy
  • Lactation
  • Growth

Please Note:

  • The wet version of Urinary S/O Feline is recommended for recurrent idiopathic cystitis
  • In older cats, renal function should be checked before Urinary S/O Feline is prescribed

Feeding Advice:

Feed Urinary S/O for 5 to 12 weeks for the dissolution of struvite stones and up to 6 months for the reduction of struvite stone recurrence. This product can be used long-term under the guidance of your veterinarian. It is recommended that a veterinarian’s opinion be sought before use, before extending the period of use and before stopping use.

Key Benefits:



Effectively dissolves particular urinary stones called struvites.



Helps lower the concentration of ions contributing to crystal formation.



Helps to prevent urinary crystals. 



This diet is low in magnesium - a component of struvite urinary crystals. 

Dry food
Packaging size:
Product Kibble Urinary S/O LP 34

Recommended daily quantities (g/day):
Water should be available at all times
It is recommended to divide the daily intake into 2 meals

Cat's weight 2 kg 3 kg 4 kg 5 kg 6 kg 7 kg 8 kg 9 kg 10 kg
Thin 35 g 3/8 cup 55 g 5/8 cup 70 g 7/8 cup 90 g 1+1/8 cup 110 g 1+3/8 cup - - - - - - - -
Normal 30 g 3/8 cup 40 g 4/8 cup 55 g 5/8 cup 70 g 7/8 cup 85 g 1 cup 100 g 1+2/8 cup 115 g 1+3/8 cup 125 g 1+4/8 cup 140 g 1+6/8 cup
Overweight - - - - - - 60 g 6/8 cup 70 g 7/8 cup 80 g 1 cup 95 g 1+1/8 cup 105 g 1+2/8 cup 115 g 1+3/8 cup

Closely monitor your cat’s body condition and pay regular visits to your veterinarian. Ensure your cat is always provided with clean, fresh water.

See body condition
COMPOSITION: rice, wheat gluten*, dehydrated poultry meat, maize flour, animal fats, maize gluten, hydrolysed animal proteins, minerals, vegetable fibres, beet pulp, fish oil, soya oil, fructo-oligo-saccharides, hydrolysed crustaceans (source of glucosamine), marigold extract (source of lutein). ADDITIVES (per kg): Nutritional additives: Vitamin A: 22000 IU, Vitamin D3: 800 IU, E1 (Iron): 46 mg, E2 (Iodine): 3.5 mg, E4 (Copper): 8 mg, E5 (Manganese): 59 mg, E6 (Zinc): 194 mg, E8 (Selenium): 0.08 mg - Preservatives - Antioxidants. ANALYTICAL CONSTITUENTS: Protein: 34.5% - Fat content: 15% - Crude ash: 7.4% - Crude fibres: 2.5% - Calcium: 0.8% - Phosphorus: 0.7% - Sodium: 0.9% - Magnesium: 0.05% - Potassium: 1% - Chloride: 1.9% - Sulphur: 0.5% - Total taurine: 0.2% - Urine acidifying substances: calcium sulphate (0.56%), DL-methionine. *L.I.P.: protein selected for its very high assimilation.
Analysis table Amount (per kg as fed)
Arachidonic acid (%) 0.07
Crude ash (%) 7.3
Biotin (mg/kg) 3.3
Calcium (%) 0.8
Crude fibre (%) 2.7
Dietary fibre (%) 6.7
DL-methionine (%) 1.02
EPA/DHA (%) 0.26
[fat] (%) 15.0
Glucosamine chloride (mg/kg) 1785.0
Linoleic acid (%) 3.3
Lutein (mg/kg) 5.0
Metabolisable energy (calculated according to NRC85) (kcal/kg) 3655.0
Metabolisable energy (measured) (kcal/kg) 3890.0
Methionine Cystine (%) 1.64
Moisture (%) 7.0
Nitrogen-free extract (NFE) (%) 33.5
Omega 3 (%) 0.6
Omega 6 (%) 3.45
Phosphorus (%) 0.7
Protein (%) 34.5
Starch (%) 29.5
Taurine (mg/kg) 2000.0
Vitamin A (IU/kg) 24000.0
Vitamin C (mg/kg) 200.0
Vitamin E (mg/kg) 500.0
Other nutrients Amount (per kg as fed)
Arginine (%) 1.65
L-lysine (%) 1.15
Minerals Amount (per kg as fed)
Chloride (%) 1.9
Copper (mg/kg) 15.0
Iodine (mg/kg) 3.55
Iron (mg/kg) 161.0
Magnesium (%) 0.05
Manganese (mg/kg) 83.0
Potassium (%) 1.0
Selenium (mg/kg) 0.29
Sodium (%) 0.9
Zinc (mg/kg) 233.0
Vitamins Amount (per kg as fed)
Choline (mg/kg) 2000.0
Folic acid (mg/kg) 15.0
Vitamin B1 Thiamin (mg/kg) 27.9
Vitamin B12 Cyanocobalamin (mg/kg) 0.18
Vitamin B2 Riboflavin (mg/kg) 55.8
Vitamin B3 Niacin (mg/kg) 176.6
Vitamin B5 Pantothenic acid (mg/kg) 62.1
Vitamin B6 Pyridoxine (mg/kg) 46.2
Vitamin D3 (IU/kg) 765.0