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My pet vomited blood after Azithromycin. What to expect at vet?

Updated on September 23rd, 2025

Pet's info: Cat | American Shorthair | Female | spayed | 9 lbs

Lupé finished Azithromycin yesterday and this afternoon she vomited blood, we're at an urgent care vet clinic waiting to be seen. I know that vomiting blood is a rare side effect, what can I expect once she is seen? She was already triaged.

1 Answer

Most Helpful Answer

Sara Farmer, DVM

Answered By Sara Farmer, DVM

Veterinarian

Published on December 12th, 2019

The vet may recommend blood work or abdominal x-rays after performing a physical exam to make sure there are no other underlying diseases that may have caused Lupe to vomit blood. I would worry that this is unrelated to the azithromycin since she finished the medication yesterday.
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