Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

My sick kitten isn't eating on doxycycline. Is it making her worse?

Updated on September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | spayed | 7 lbs

I'm fostering a kitten (3 to 4 weeks old). She is sick and has been on doxycycline for 5 days now. Doesn't seem to be getting better so I had the vet look at her again. She gave small dose of clindamycin SQ twice daily on top of doxy. Is it possible that the doxy is making her worse? Her breathing is so labored (like hiccups) and no longer has any interest in food. She just cries when she isnt sleeping and it breaks my heart for her. I don't want to prolong suffering if she won't get better..

1 Answer

Most Helpful Answer

Andrea M. Brodie, DVM

Answered By Andrea M. Brodie, DVM

Veterinarian

Published on April 20th, 2018

Doxycycline can cause nausea and affect appetite. You may want to ask whether you can stop the Doxy and either not replace it or replace it with another antibiotic if needed. It is really important that your kitty drinks her kitten milk otherwise she will not survive due to dehydration. The other problem is if she is so congested that she cannot smell her food that will not eat. I can only suggest that you keep her warm and massaged, speak cat to her if you can (no this is no joke, try purring like a cat mama does) and often try to offer warm kitten milk. I hope she will start eating for you again.
Vote Icon1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Share

Styled arrow button