ROYAL CANIN® Feline Urinary S/O Adult Dry Cat Food

ROYAL CANIN® Feline Urinary S/O Adult Dry Cat Food
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1.5kg Bag

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  • 1.5kg Bag £17.50
  • 3.5kg Bag £32.99
  • 7kg Bag £52.99

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£17.50 to £52.99


Royal Canin Urinary S/O is a complete food for adult cats. It has been specifically developed for cats with struvite and calcium oxalate urolithiasis and to help to dissolve struvite uroliths. It is also suitable for cats with lower urinary tract diseases. The food acidifies the urine which will dissolve struvite stones and will help to prevent them from reoccurring. It also has a low level of magnesium which is a component of struvite crystals. This will help to prevent their formation.

The food will also dilute the urine which will ensure regular flushing of the bladder and will decrease the urinary concentration of struvites and calcium oxalates. It also contains low RSS to create undersaturated urine which is an unfavourable environment for struvite and calcium oxalate crystal formation. Your cat's bladder health will be helped with glycosaminoglycans which are essential to preventing bacteria or toxins from causing inflammation or stimulation of pain receptors. In idiopathic cystitis the Glycosaminoglycans are decreased.

RECOMMENDED FOR CASES OF; Struvite uroliths: dissolution and management of recurrence, Calcium oxalate uroliths: management of recurrence.

NOT RECOMMENDED IN CASE OF; Chronic Kidney Disease (CKD), Heart disease (when sodium restriction is sought), Concurrent use of urine-acidifying medication, Growth, gestation/lactation.


Helps dissolve all types of struvite stones.|Urine dilution makes the urine less liable to form struvite and calcium oxalate stones.|Helps lower the concentration of ions contributing to crystal formation.|Reduced level of magnesium, a natural component of struvite crystals.


Vitamin A: 21500 IU, Vitamin D3: 800 IU, E1 (Iron): 37 mg, E2 (Iodine): 3.7 mg, E4 (Copper): 11 mg, E5 (Manganese): 48 mg, E6 (Zinc): 136 mg, E8 (Selenium): 0.06 mg, Urine acidifying substances: calcium sulphate (1.25%). Preservatives - Antioxidants.


Rice, wheat gluten**, dehydrated poultry protein, maize flour, animal fats, hydrolysed animal proteins, maize gluten, minerals, vegetable fibres, fish oil, soya oil, fructo-oligo-saccharides, marigold extract (source of lutein). **L.I.P.: protein selected for its very high digestibility. Crude ash: %. Crude fibre: 2.9%. Crude oil fats: %. Moisture: %. Protein: 34.5%.

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  • Landline: 01582 842096
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  • Email: [email protected]

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Reviews (71)

Summary of Reviews for ROYAL CANIN® Feline Urinary S/O Adult Dry Cat Food

Overall 5
Value For Money
Pet's Opinion
Nutritional Value
71 out of 71 (100%) customers would recommend this product.
5 stars (60 reviews)
4 stars (11 reviews)
3 stars (0 reviews)
2 stars (0 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

55 Problem solved
Verified Purchase

By on 29 April 2021

Nimbus had a problem with cystitis, Royal Canin Feline Urinary S/O wet and dry food was recommended and has proved successful

Customer recommends this product

55 Excellent product
Verified Purchase

By on 27 April 2021

This product helps to keep my cat healthy, originally prescribed by a vet, I have continued with it to make sure she remains in good health.

Customer recommends this product

45 always used this item over the years for our cats
Verified Purchase

By on 9 January 2021

Always good quality

Customer recommends this product

55 My cats love these
Verified Purchase

By on 7 November 2020

Excellent product will be buying more

Customer recommends this product

55 Perfect
Verified Purchase

By on 25 April 2020

Perfect cat food for my cat.

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding ROYAL CANIN® Feline Urinary S/O Adult Dry Cat Food, including answers from our team.

30 August 2021 at 7:11pm



What does S/O mean?

  • VioVet Staff

S/O stands for Struvite/Oxalate as the food is formulated to help clear these forms of stones. It is a veterinary diet that should only be used alongside your vets advice, it's really important to use the right urinary diet as different stones require different diets to prevent or clear. Using the wrong diet can worsen the problem.

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