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My dog got Dex/Benadryl before shots. Will it affect vaccine immunity?

Updated On September 23rd, 2025

Dex and Benadryl were administered before Dhpp and bordetella, reasons I do not know why. My question is, will the Dexamethasone inhibit an immune response for the Dhpp and bordetella?

1 Answer

Most Helpful Answer

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Answered By Daniel Fonza, DVM

Veterinarian

Published on February 25th, 2020

Unless the veterinarian administered an immunosuppressive dose of dexamethasone, it should not interfere with the immune response for the vaccinations that were administered. The dose that we give for preventing an allergic reaction is lower than the dose given to suppress the immune system. I hope this helps!

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