Petco Text Logo
Petco Pet Logo

Why does my cat have persistent diarrhea even after vet visits?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 16 lbs

I have a cat that has had on and off diarrhea I’ve had him to the vet several of times and now it’s even worse do you have any ideas about what it could be

1 Answer

Most Helpful Answer

Image profile

Answered By Daniel Fonza, DVM

Veterinarian

Published on January 27th, 2018

Hi there and thank you for using pet coach to address your concern. There are many causes of diarrhea but most commonly diarrhea can be due to the diet or intestinal bacteria. Other causes such as GI inflammatory diseases, cancer or systemic diseases are less common but are all still a possible cause. I would recommend switching to a hydrolyzed protein diet such as Hills Z/D or Royal Canin Ultamino and adding in a probiotic such as Purina fortiflora which can be found online quite easily or at your local pet store. If after 4 weeks of the new diet there is no improvement, I would recommend further testing with a veterinarian such as an abdominal ultrasound. I hope this helps guide you in the right direction. Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored