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Dog allergic to flea collar. Is dexamethasone dose enough? When will it work?

Updated On September 23rd, 2025

Pet's info: Dog | Maltese | Male | 11 lbs

My dog is a 3 year Maltese with 11 lbs. He was wearing a Scalibur necklace for flees, and by that developed a red rash around the neck. We removed it yesterday, but today he is itching, breathing more heavily than normal, and squiling. We called a vet and she told us to give him dexamethasone. We have 0.5mg human dexamethasone. We gave him 1 pill 0,5mg 5 hours ago, and 2 more half an hour ago. Total 1.5mg. Is that enough? Should we give more? When will the effect take place? Thanks!

1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on June 17th, 2018

If that is a allergic reaction as it seems, the dose you gave should be enough to stop it. If the signs persist I would recommend to have him checked as soon as possible as more powerful (ideally injectable) treatment with steroids should be given. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

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