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My kitten is vomiting after starting antibiotics. What should I do?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | 2 months and 7 days old

Hi, my kitten suddenly started vomiting today and she has vomited 5 times :( , yesterday morning I started giving her a medicine called Clavet (she was sick because of cold and the vet gave me Clavet and told me to give her 2 times a day) she has taken 3 doses ( morning - night - morning ) but this morning ( around 6:45AM ) she vomited, and now it's 10PM, she vomited 5 or 4 times today between 6:45 am and 10 pm, so I stopped giving her Clavet, and now I'm really worried and don't know what to do

1 Answer

Most Helpful Answer

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Answered By Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

Veterinarian, Certified Veterinary Acupuncturist, Certified Canine Rehabilitation Practitioner

Published on October 2nd, 2017

Unfortunately, some antibiotics can cause GI upset (vomiting and/or diarrhea). Since Snow is a kitten, we certainly worry more about her vomiting and getting dehydrated. Since it's too late to contact your vet tonight, I would try to offer Snow a small amount of water overnight and see if she is able to keep that down. If she does not want to drink water, you can try a small amount of a low sodium chicken broth or the water (not oil) that canned tuna or salmon is packed in. I would recommend contacting your vet in the morning to get their recommendation from there. If Snow continues to vomit, she will certainly need to be seen by your vet for some medication. Good luck! I hope that was helpful! Thanks for using Petco Pet Education Center, formerly Petcoach.

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