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Why is my dog vomiting after Benadryl and steroid shot for swelling?

Updated On September 23rd, 2025

Pet's info: Dog | Pembroke Welsh Corgi | Male | unneutered | 10 months and 2 days old | 24 lbs

Hi my 10 month old pembroke welsh corgi Woke up with swollen nose we gave him some kids Benadryl for swelling than an hr or two later his eye puffed up so we took him to vet and they give him another dose of Benadryl and a steroid shot for itching. We came home he was drinking ate normal and then at 11 oclock in night he threw up and then threw up multiple times after that first it was his food then just liquid. Is that side affects or should i take him to vet when they open today?

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1 Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on July 22nd, 2019

Poor pup! I recommend to have him examined again today. It’s possible the liquid Benadryl is making him throw up. The doctor may recommend to try a tablet instead. The doctor may also want to send him home with some oral steroids and perhaps a medication to stop vomiting. A bland diet for the next 24 hours may also be beneficial. I hope Kai starts feeling better quickly!

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