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Is it safe to switch my dog's IBD diet from Royal Canin to Hill's z/d?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | spayed | 11 years and 6 months old | 11.5 lbs

Hi my trixie has eaten Royal Canin Rx wet & dry diet selected protein rabbit pea for many years for irritable bowel. Lately she’s seemed tired of it, not wanting it my vet has examined her & done blooodwork and found nothing. I’ve even tried switching to the duck and pea and she likes for a few days-then loses interest. My vet suggests trying hills Rx z/d for food sensitivities but I’m so afraid to switch from the Royal Canin selected proteins Any advice on if this may be a smart switch ? Thx

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on February 10th, 2019

Theoretically Trixie could do any of the hydrolyzed diets. Royal Canin carries a hydrolyzed protein diet very similar to the Hill’s diet. Purina also carries a formula as well called HA. Most likely Trixie would do fine on any of these. Make sure any diet transition is slow over the course of 5 to 7 days. I hope this is helpful and please feel free to post any additional questions!

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