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Royal Canin Urinary S/O Adult Dry Cat Food - 3.5Kg By Royal Canin Veterinary Diet

Royal Canin Feline Adult Urinary S/O Dry Cat Food - 3.5kg

Manufacturer's View

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.

Key Benefits

Struvite dissolution 
Low RRS 
Urine dilution 
Low magnesium

Recommended for

For adult cats over 12 months between 2kg - 10kg 
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.

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Ingredients

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: 8.9%. Crude fibre: 2.9%. Crude oil fats: 15%. Moisture: %. Protein: 34.5%.

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Nutrition and Analytical Constituents

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.

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Daily Feeding Guide

Please always ensure that fresh drinking water is available. Please refer to the product packaging for full details. 

Ratings & Reviews

35 reviews

12/6/2025 9:20:00 PM

Works as advertised

by Rebecca Hall -

Essential dietary change for urinary issues. The food works effectively to keep her system balanced.

9/9/2025 4:05:00 PM

Good buy

by William Davies -

The 3.5kg size is a good balance of value and freshness. My cat enjoys this diet and is healthy.

30/8/2025 9:08:00 AM

Happy with the food

by Martin Perry -

This food gives me peace of mind about my cat's health. He is doing very well and his checkups are always good.

18/8/2025 8:55:00 PM

Good product

by Penelope Cruz -

It is a great food for her condition but I have to mix it with treats sometimes to encourage her to eat all of it.

4/5/2025 2:05:00 PM

Great packaging

by Tom Baker -

The bag is sturdy and the seal keeps the food fresh for a long time. My cat loves this urinary kibble.

6/7/2025 6:39:00 AM

Highly recommended

by Isabel Rodriguez -

If your cat has struggled with urinary crystals, this food is a non-negotiable. It truly makes a huge difference.

4/6/2025 8:22:00 AM

Great dry food

by Ethan Harris -

The kibble is a manageable size and my cat seems to enjoy the flavor. The large bag is great for bulk storage.

17/10/2025 9:24:00 AM

Essential for my boy

by Hannah Lee -

This food is vital for managing my male cat's urinary health. He's been problem free since starting this S/O diet.

5/10/2025 4:16:00 PM

Lasts a long time

by Lucas White -

Buying the larger bag means less frequent ordering, which is convenient. The food is excellent quality and effective.

29/4/2025 10:56:00 PM

Better value large bag

by Susan Brown -

The 3.5kg bag is a much better price per kilo, which is essential as this is her life long diet. Keeps well.

23/9/2025 9:08 AM

Our Cat Loves this

by Karen -

I was recommended this food by our Vet for our cats urinary problems and the great thing is she actually likes it. It is always eaten and we know there are no harmful additives in it.