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What's the difference: Royal Canin Urinary SO vs. Purina UR for cats?

Updated On September 23rd, 2025

Pet's info: Cat | Ragdoll | Male | neutered | 11 years and 5 months old | 10 lbs

Could you please tell me the difference between urinary so and urinary ur for felines. I had my sister pick up food for my cat st the vet and the so o have never gotten before

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on August 31st, 2018

So both are urinary diets, just make by different brands. Urinary SO is made by Royal Canin, and Urinary UR is by Purina. Both are formulated to help dissolve struvite stones and prevent their reoccurrence. I hope this helps.

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