Royal Canin Veterinary Health Nutrition Urinary SO Wet Cat Food in Loaf - 48x85g Pouches

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Royal Canin Feline Urinary SO Loaf is formulated for the nutritional management of dissolution of struvite uroliths, prevention of recurrence of struvite urolithiasis, and management of calcium oxalate urolithiasis.

RECOMMENDED FOR CASES OF; Struvite uroliths: dissolution and management of recurrence, Calcium oxalate uroliths: management of recurrence, Feline idiopathic cystitis (FIC). NOT RECOMMENDED IN CASE OF; Chronic Kidney Disease (CKD), Heart disease (when sodium restriction is sought), Concurrent use of urine-acidifying drugs, Growth, gestation/lactation.


  • STRUVITE DISSOLUTION - Helps dissolve all types of struvite stones.
  • URINE DILUTION - Urine dilution makes the urine less liable to form struvite and calcium oxalate stones.
  • LOW RSS - Helps lower the concentration of ions contributing to crystal formation.
  • IDIOPATHIC CYSTITIS - High moisture content increases urine dilution.

Contents: 48x85g pouches

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Feeding Guide

Cat Weight (kg) Weight Condition
Thin Normal Overweight
2 2 1 + 1/2 1 + 1/2
3 2 + 1/2 2 2
4 3 2 + 1/2 2
5 4 3 2 + 1/2
6 4 + 1/2 3 + 1/2 3

Please ensure fresh, clean drinking water is available at all times.



Meat and animal derivatives, derivatives of vegetable origin, minerals, cereals, vegetable protein extracts, oils and fats, various sugars. Crude ash: 2.2%.

Analytical Constituents

Crude fibre: 1%. Crude oil fats: 3.5%. Moisture: 79.5%. Protein: 11%.


Vitamin D3: 50 IU, E1 (Iron): 3 mg, E2 (Iodine): 0.3 mg, E4 (Copper): 2.5 mg, E5 (Manganese): 0.9 mg, E6 (Zinc): 9 mg, Urine acidifying substances: calcium sulfate: 0.35%. Technological additives: (acidity regulator)Sodium bisulfate: 0.5 g.

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Q & A

Q: Is this the equivalent to urinary s/o product code 50279?
A: Product 50279 has been discontinued and replaced with Royal Canin Feline Urinary SO Loaf 48x85g which is the new improved equivalent, if you have any concerns please feel free to contact Royal Canin's nutritional helpline for further advice:0845 300 5965