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Why is my cat vomiting and pooping bloody mucus after UTI meds?

Updated On September 23rd, 2025

Pet's info: Cat | Ocicat | Female | unspayed | 3 years and 8 months old | 6 lbs

I brought my cat to the vet two weeks ago and was given amoxicillin for a UTI without a urine test as her bladder what empty. Last night she pooped in the corner and it had a lot of mucus with red in the mucus. She had also puked up her cat food several times in the past two days. Is any of this related or of cause for concern?

1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on November 6th, 2018

Usually not and these signs could be actually related to a gastrointestinal infection/inflammation. It is indeed possible that the UTI is due to stress secondary to the gastrointestinal problem, which is the primary problem to be solved or it may be that the antibiotics are upsetting her stomach. Another check up is indeed required if the sign do not resolve with few days of a bland diet based on boiled chicken or white fish and rice in small portions given 3 or 4 times daily for a week. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. Please find the time to give us a feedback about the consultation as that will be used to improve our service.

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