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Why is my dog's stool red on prednisone? Is it blood from meds?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | 25 lbs

Hello! My dog has had lower back issues and the vet prescribed prednisone (anti-inflam), gabepentin & tramadol (pain). I've noticed a red coloring to his stool lately, I believe it could be blood in his stool. Could these meds cause that? He's had anal gland issues in the past and it could be an infection back there too or something. Any advice other than to say I should go to the vet is much appreciated! His back is getting better :)

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on December 21st, 2018

Prednisone is a steroid, and steroids are known to cause GI ulcers, which could be the cause of the blood in Dodger's stool. Unfortunately the only thing you can do is take him back into the vet. The vet needs to be aware of this, and he may need a different medication as well as a gut protectant for any ulcers. I'd take him back into the vet first thing in the morning.

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