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


Nutrient that traps the calcium in saliva so reducing tartar deposits.


Helps dissolve all types of struvite stones.


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


In 1968 in the South of France, a veterinarian named Jean Cathary discovered he could help dogs heal more fully through tailored nutrition. In this visionary act, Royal Canin was born. Today, using advanced veterinary science and careful observation to identify the most adapted nutrients, our 220+ individual formulas support the health of every individual cat and dog.


2A. Urinary crystals are a primary factor in the development of bladder stones and may occur when there is a dietary mineral excess.

PRIMARY INDICATION: - Recommended for Struvite uroliths, dissolution and management of recurrence in small breed dogs (<10kg) - Recommended for calcium oxalate uroliths: management of recurrence in small breed dogs (<10kg) - Recommended as a concurrent therapy for other common lower urinary tract conditions (e.g., Idiopathic Cystitis and UTI) until risk factors of those conditions has been addressed via a multimodal approach in small breed dogs (<10kg)

Working towards a sustainable future

Our belief that pets make our world better inspires and gives life to our purpose of making a better A BETTER WORLD FOR PETS ™

Discover more
Labrador Retriever adult sitting with its owner outdoors

Complete dietetic feed for adult dogs

ROYAL CANIN® URINARY S/O SMALL DOG dry is a complete dietetic feed for dogs, formulated for the dissolution of struvite stones and the reduction of struvite stone recurrence. Urine undersaturating or metastabilising properties for struvite and/or Urine acidifying properties. RECOMMENDATIONS: It is recommended that advice from a veterinarian be sought before use and before extending the period of use. Feed URINARY S/O SMALL DOG dry for 5 to 12 weeks for the dissolution of struvite stones and initially up to 6 months for the reduction of struvite stone recurrence.

COMPOSITION: rice, maize flour, dehydrated poultry protein, animal fats, maize gluten, hydrolysed animal proteins, minerals, vegetable fibres, egg powder, wheat gluten*, soya oil, fish oil, fructo-oligo-saccharides, marigold extract (source of lutein). Protein sources : dehydrated poultry protein, maize gluten, hydrolysed animal proteins, egg powder, wheat gluten.

ADDITIVES (per kg): Nutritional additives: Vitamin A: 16000 IU, Vitamin D3: 1000 IU, E1 (Iron): 47 mg, E2 (Iodine): 4.7 mg, E4 (Copper): 14 mg, E5 (Manganese): 61 mg, E6 (Zinc): 148 mg, E8 (Selenium): 0.06 mg - Technological additives: Pentasodium triphosphate: 3.5 g - Preservatives - Antioxidants.

ANALYTICAL CONSTITUANTS: Protein: 20.0% - Fat content: 17.0% - Crude ash: 7.3% - Crude fibres: 2.3%- Calcium: 0.7% - Phosphorus: 0.7%- Sodium: 1.2% - Potassium: 0.8% - Magnesium: 0.05% - Chloride: 2% - Sulphur: 0.5% - Urine acidifying substance: calcium sulphate (0.8%) - DL-Methionine (0.45%) - EPA and DHA : 0.22%.

FOR RSA: Guaranteed analysis g/kg: Crude protein (min) 180 - Moisture (max) 110 - Crude fat (min) 150 - Crude fibre (max) 33 - Crude ash (max) 80. Product registration number: XXXXXX - Act 36/1947. For Namibia: N-FF XXXX.

* L.I.P.: protein selected for its very high digestibility.

FEEDING INSTRUCTION: Water should be available at all times. Batch number, factory registration number and best before date: see information on packaging. To be stored in a cool, dry place.
Dog weightThin-Normal-Overweight-
2 kg 55 g 5/8 48 g4/8 42 g4/8
2.5 kg65 g 5/8  57 g5/8 49 g4/8 
3 kg 74 g 6/8 65 g5/8 56 g5/8 
3.5 kg83 g 7/8 73 g6/8 63 g 5/8
4 kg92 g1 81 g7/8  70 g6/8
5 kg109 g1+1/8 96 g1 83 g7/8 
6 kg125 g 1+2/8 110 g1+1/8 95 g1
7 kg 140 g1+4/8 123 g1+2/8 106 g1+1/8
8 kg155 g 1+5/8136 g1+3/8 117 g 1+2/8
9 kg169 g 1+6/8 149 g1+4/8 128 g 1+3/8
10 kg 183 g 1+7/8 161 g1+5/8 139 g 1+4/8

Still have questions about this product?

Find out how to reach us, and get in touch.

Ask a question