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My 110lb dog got wrong Frontline dose. Can I give 1.5 doses for fleas?

Updated On September 23rd, 2025

We bought frontline plus for dogs 55 to 88 pounds by mistake. She is around 110 pounds. We tried one dose of it and it did little to help with her flea problem. It’s been almost two weeks and we are seeing quite a few fleas. Would it be alright to use one and a half doses of the frontline plus 55 to 88 pounds after the month is up? We just don’t want to waste the money we spent on the medication. I looke it up and 1.5 doses of the large dogs equals the same dose as the extra large dogs medicine.

1 Answer

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on November 3rd, 2018

No this is not something i can recommend, i strongly advise switching to a different product as well because frontline is not that effective anyway, i would recommend Advantage spot on, but you must buy the correct weight because if you use a product for a smaller dog it will not work.

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