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Why is my dog vomiting and having soft stool after allergy shots?

Updated On September 23rd, 2025

Pet's info: Dog | Morkie | Male | unneutered | 10 years and 1 month old | 9 lbs

My dog is 10yrs old a morkie, took to vet this past monday for itching, &spot so much itching his hair was gone around that area. Well they gave him 2 shots said might just have allergies. Came home from work 30mins ago to a few small spots on carpet where he threw up a lil bit of what lookd like white flim stuff &another area it lookd like dogfood but no chunks. Also had pretty soft stool twice inside house also& he usually doesnt potty in house. Well i was petting him a lil bit ago & seen th

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1 Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on October 11th, 2018

I am sorry to hear about your pup! I would recommend calling your vet to find out if the symptoms he is showing could be related to the injections. You don't mention what injections were given, but some (such as Cytopoint) can have transient vomiting/diarrhea/lethargy as a result which usually resolves in a few days but your vet may want to investigate further or prescribe medication to treat these symptoms.

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