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My cat is on doxycycline. Should I give probiotics for his GI health?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 11 months and 21 days old | 9 lbs

Giving my 1 year old cat doxyciline 100 mg liquid form. Wondering about the effect this has on his gi tract and gut flora, would a probiotic or digestive enzyme help mixed in his food help while on this antibiotic? Thank you.

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1 Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on June 22nd, 2019

Hi there. Any antibiotic will cause some transient changes in gut flora. In some patients, this may cause some symptoms of GI upset such as vomiting or diarrhea. If you're concerned, you can certainly give Bailey a probiotic such as Forti-Flora in his food each day while he's taking the doxycycline - this won't hurt anything, and might help to keep his intestinal bacteria from being disrupted as much.

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