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My kitten has diarrhea for a week, and amoxicillin isn't working.

Updated On September 23rd, 2025

Pet's info: Cat | Chausie | Female | unspayed

My kitten is 3 months old and has had diarrhea for about a week now. I took her to a local vet, he prescribed amoxicillin. I gave it to my kitten for 4 days now and she still has diarrhea. I’m really worried about her I need a second opinion on this. It can’t be her food I only give her the same food and it has caused no trouble in the past.

2 Answers

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on May 4th, 2019

I would recommend that you have Goose re-evaluated by the vet since their treatment didn't work. Diarrhea in kittens is commonly caused by intestinal parasites or food intolerance. They should perform a fecal intestinal parasite screen. Even if it is normal, empirical treatment for the intestinal parasites common in your area may be warranted.

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on August 8th, 2019

    Thanks for using Petco Pet Education Center, formerly Petcoach! This could certainly be a side effect of the antibiotics though it could also be due to disease per se. For that reason, I recommend you check in with the veterinarian who prescribed the medication as they have more knowledge on the specifics on the case. They may recommend stopping the antibiotic or perhaps switching to a different one or just simply going in for an evaluation. I hope this was helpful. Best of luck!

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