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Royal Canin VHN Feline Urinary S/O

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Royal Canin VHN Feline Urinary S/O
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Royal Canin Veterinary Diet Feline Urinary S/O LP 34 is a complete food designed to treat cats with struvite stones and urinary tract problems. How it works Urinary S/O is specifically... Read more

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Product details

Royal Canin Veterinary Diet Feline Urinary S/O LP 34 is a complete food designed to treat cats with struvite stones and urinary tract problems.

How it works

Urinary S/O is specifically designed to dissolve and prevent struvite stones from forming. If your cat is prone to struvite or calcium oxalate stones, this formula not only dissolves existing stones but will also dilute your cat's urine to prevent them from recurring. Urinary dilution also ensures regular bladder movement to help flush out your cat's bladder, getting rid of any nasty bacteria or remaining stones. Oversaturated urine offers the perfect conditions for struvite and calcium oxalate crystals to form – Urinary S/O has a low saturation to help combat this. Magnesium is a natural component of struvite stones; this food uses a low magnesium formula to reduce the possibility of them forming in the future.

Key benefits

  • helps dissolve all types of struvite stones
  • low saturation helps to lower concentration of ions that make up crystal formation
  • low magnesium to prevent crystals recurring
  • urine dilution makes stones less likely to reoccur.

When to use it

The most common urinary disorders are struvite and oxalate stones, which usually occur in female cats over seven years old but can also occur in males. Urinary problems are often hard to diagnose, as your pet may not show any obvious symptoms. There are a few things you can look out for if you’re concerned about your cat’s health. If your cat has abnormal urine patterns, difficulty urinating or if their urine becomes bloody or cloudy, it could be a sign of a urinary infection. You should consult your vet for a thorough examination and diagnosis.

To dissolve struvite and calcium oxalate stones, your vet might suggest you feed your cat the formula every day for five to 12 weeks. If your pet is prone to urinary crystals, you can use the formula for up to six months to prevent reoccurrence.

Because veterinary diets are formulated for the nutritional support of pets with specific clinical conditions, we recommend that you only use them under professional advice. For more information on feeding Royal Canin Veterinary Diet Feline Urinary S/O LP 34 to your cat, please consult your veterinary surgeon.




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%.


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.

Feeding Guide

Customer reviews

4.8 out of 5 444  Reviews

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The following reviews are available in English. 

  • Healthy cat
    This product was recommended by our vet when some years ago our cat was suffering from frequent urinary problems.Along with the Royal Canin urinary wet food pouches this has been the solution and she is now a spritely 17 years old. Easy to order with MedicAnimal, prompt delivery, good discounts.
    Jill Halliwell - February 24, 2020
  • Good food
    This is a medical food and my cat has been eating it for years, and he seems fine.
    Robin Graham - September 19, 2019
  • Urinary dried cat food
    Cats love it.. Not had any problems with 1cat who suffers with this as been feeding him this for years.. I have a healthy, happy cat.
    Rachel O'Connor - July 1, 2019
  • Royal canin urinary for cats
    I buy this product on a regular basis. My cat has had crystals in his urine a number of years ago and this product was recommended.
    Anonymous June 27, 2019
  • Something is different
    My cat has used the original packaging product for years and never had a problem, but since I started feeding him the new packaging food, he has been having diareah and threw up his food. I’m not sure if it’s purely down to the food or my cat has been sick. I’ve taken him to the vet and since changing his diet for a few days, his condition got better. Not sure if anyone else is having similar experiences? I am considering to change to another brand of urinary diet for my cat.
    Erin - June 10, 2019