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?
3 Answers
Most Helpful Answer
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!
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on June 29th, 2017
This is probably an acute allergic reaction, keep her calm and inside the house, most of these reaction resolve within 12-24 hours without treatment but if the symptoms do not seem to get better take her to the vet when it opens later on today.
1Pet Parents found this answer helpful
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Published on February 24th, 2017
Poor pup! If he is vomiting today, I would recommend taking him to the vet as soon as possible - it could be an unrelated problem, but in some cases vomiting can be a sign of a dangerous allergic reaction. Since his face was swollen yesterday, I would be worried that this could be connected - if so, he really needs treatment right away. If your vet confirms that this is the problem, he/she can give an injectable steroid and may also recommend keeping your pup for IV fluids and supportive care until the reaction is under control.
1Pet Parents found this answer helpful
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