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Can I treat my dog's allergies with cetirizine instead of a vet?

Updated On September 23rd, 2025

Pet's info: Dog | Jack Russell Terrier | Male | neutered | 12 years and 8 months old | 16 lbs

I gave my Jack Russell terrier a cetirizene tablet and he seemed so much better afterwards - eyes stopped streaming, reduced redness in paws. He is 12 yrs old. Is it safe to treat the summer allergy like this or do I need to see the vet? The last time we went he was treated with steroids initially, then an entirely unnecessary and unaffordable specialist diet which we were advised should be permanent. I am not sure I trust the vet’s advice now.

2 Answers

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Answered By Dr. Strydom, DVM

Veterinarian

Published on September 16th, 2019

Yes, you can give cetirizine as needed. Be aware that if you use it constantly there is a chance he will become tolerant to it and will no longer work. It should also not be used in animals that have any underlying kidney or liver disease. Please review this article on the medication in regards to dosing, side effects, etc. ( https://www.petcoach.co/pet-medication/cetirizine/ )

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    Answered By Dr Stafford, BVetMed, MRCVS

    Veterinarian

    Published on April 17th, 2020

    Certirizine is used my many pet owners and some vets in the treatment of environmental allergy. It's use would be described as 'off label' as it is not specifically made for animals but the evidence would suggest it is safe. There is a fair bit of debate as to the efficacy of anti histamines in dogs, but some do seem to respond favourably so if it is working for you go ahead. If you find the skin is not settling I would consult your vet as there are other medical treatments available for allergy and there may be secondary skin infection.

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