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My dog is on antibiotics. Can I give her oral flea medicine?

Updated On September 23rd, 2025

Pet's info: Dog | Siberian Husky | Female | unspayed | 4 years and 6 months old | 45 lbs

Can I give my dog antibiotics and oral flea medicine? My dog is on a round of antibiotics for a skin abrasion that got infected, today while cleaning/dressing the area I found 2 fleas. She is due for her monthly flea medicine, but I am nervous to give it to her as I didn't know if giving it to her would hurt her or render either of the medicines ineffective.

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on July 24th, 2019

Giving her the flea medication should not pose any issues if she is on antibiotics. You can wait about 2-3 hours after giving her the antibiotics before administering the flea medication (if it is oral) to be completely safe. That way, the antibiotics should be out of her stomach.

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