Your basket

It’s empty in here!

The zooplus app

Use app
Free delivery from £39 (T&C’s apply)**

Royal Canin Veterinary Diet Cat - Urinary S/O

Product description

Royal Canin Veterinary Diet Cat - Urinary S/O 4 23
23 reviews Write your review
Delivery in 1-3 working days ...more
11.99 45.99 GBP 2
12 x 85g
(£11.75 / kg)
Carry on saving
Saver Pack: 48 x 85g
individually priced £47.96
Now £45.99
(£11.27 / kg)
Carry on saving

Product description

Dietetic wet food for cats with urinary tract problems, helps to dissolve struvite stones, increases the volume of urine & promotes a healthy urinary tract, low in magnesium, contains urine acidifiers
Royal Canin Urinary S/O Diet is specially formulated to specifically support the treatment of cystitis and urinary stones. This food can help to dissolve painful struvite stones and crystals as well as calcium oxalate stones. It simultaneously works to prevent new stones from building up and reduces the risk of cystitis. The special ingredients increase the volume of urine and optimise the RSS value. The recipe also ensures that your cat receives all the vital nutrients it requires for a healthy immune system.

Royal Canin Veterinary Diet Cat - Urinary S/O contains the urine acidifiers calcium sulphate and DL-Methionine. It is also low in minerals, which makes it harder for crystals to form. The increase in the volume of urine means that it is thinner, and the urinary system is flushed out more. This wet food therefore helps to keep the urinary tract healthy. You can support your cat’s health while also giving it a tender and tasty meaty meal. This high-quality dietetic food is recommended by vets and can help cats with urinary tract problems to live an active and happy life in the long term!

Many cats suffer from recurring Feline LUTD (lower urinary tract disease), frequently with no apparent cause. Feline LUTD can also lead to urinary stones (struvite and calcium oxalate). If your cat has lower urinary tract disease you can help to support treatment by feeding it a diet that maintains the correct urine PH to dissolve struvite stones. This nutritional support for your cat’s urinary system you are will also help to reduce the risk of recurrence.

Vet Food Disclaimer


  • Idiopathic cystitis
  • Prophylactic prevention of calcium oxalate stones
  • Prophylactic prevention of struvite stones
  • Stuvite dissolution
  • Pregnancy, lactation, kittens
  • Chronic renal failure, metabolic acidosis
  • Heart failure
  • Parallel use of urine acidifying medication
  • Hypertension
Key benefits:
  • Struvite dissolution: Urinary S/O helps to dissolve struvite stones.
  • Increases urine volume: Helps to reduce the risk of recurrence of calcium oxalate and struvite stones.
  • Low RSS: Helps to produce urine with a pH unfavourable for stone formation. Also lowers the concentration of ions which contribute to crystal formation.
  • Urine dilution: The high moisture content dilutes the urine and the minerals in the bladder. This helps to alleviate discomfort and reduces the risk of struvite and calcium oxalate stone formation.

Changing your pet's diet and length of treatment:
Your pet will need to stay on this diet for 5 to 12 weeks, or until the stones are dissolved. It is advisable to feed this diet  to your cat for a further 6 months to prevent a recurrence.


Further information:
Please ensure that during its illness your pet is fed only with Urinary S/O, otherwise the effectiveness of this product may be reduced.

Therapeutic veterinary diets are carefully formulated and recommended to be used in conjunction with veterinary advice and support.

Royal Canin strongly recommend you seek advice from your vet prior to and while feeding of any of these products to your pet.

Royal Canin Veterinary Diet Cat - Urinary S/O at a glance: 


  • Dietetic complete food for adult cats with urinary tract problems
  • Dissolves struvite stones and lowers the risk of recurrence thanks to the urine acidifiers and the low magnesium content
  • Effective against struvite and calcium oxalate stones: can dissolve stones and crystals and prevent new ones from forming
  • Increases the volume of urine: the ingredients ensure that more urine is produced so the urinary tract is flushed out
  • Optimal pH and RSS value: contains urine acidifiers, prevents urine stones
  • Reduced mineral content: low in minerals as these encourage stones to form
  • Balanced recipe: ideal combination of nutrients that support the immune system
  • Recommended by vets: tried and tested ingredients that can significantly improve your cat’s health


Meat and animal by-products, vegetable by-products, minerals, grains, vegetable protein extracts, oils and fats, sugar.

Additives per kg: 
Nutritional additives:
Vitamin D3 (225 IU), iron (3mg), iodine (0.25mg), copper (2mg), manganese (1mg), zinc (10mg), urine acidifier: calcium sulphate (0.35%), DL-Methionine (0.029%).

Technological additives:
Sodium bi-sulphate (acidity regulator) (0.5kg). 

Analytical constituents

protein 10.0 %
fat 3.5 %
fibre 1.0 %
ash 1.8 %
calcium 0.22 %
phosphorus 0.19 %
magnesium 0.012 %
chloride 0.42 %
moisture 80.0 %
potassium 0.18 %
sodium 0.3 %
taurine 0.1 %
sulphur 0.17 %
protein 10.0 %
fat 3.5 %
fibre 1.0 %
ash 1.8 %
calcium 0.22 %
phosphorus 0.19 %
magnesium 0.012 %
chloride 0.42 %
moisture 80.0 %
potassium 0.18 %
sodium 0.3 %
taurine 0.1 %
sulphur 0.17 %

Feeding guide

Feeding recommendation (g/day)

Royal Canin Veterinary Diet - Urinary S/O is complete wet food for cats.

Cat's weight Lean Normal Overweight
2kg 170g 140g 110g
3kg 225g 185g 150g
4kg 275g 230g 185g
5kg 320g 270g 215g
6kg 365g 305g 245g
7kg 410g 340g 275g
8kg 450g 375g 300g
9kg 490g 410g 325g
10kg 525g 440g 350g


Latest user reviews

All prices include tax., Additional shipping costs may apply.
2 Varieties from £11.99