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My dog's thyroid medication isn't working. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Dalmatian | Female | unspayed | 10 years old | 38 lbs

My dog tsh upto 4uUnits/ml from 0uUnits/ml. Before i was giving her 2 tablets of 50mg thyroxine for her thyroid problem. What do u suggest me now to improve her thyroxine.

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1 Answer

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Answered By Lindsey Edwards MVB, BSc, IVCA

Veterinarian

Published on December 7th, 2017

We are not in a position to prescribe medication for your pet. The results you show here are not showing enough proof for the need for thyroid medications unless she is showing very clear symptoms in which case a free t4 ft4 test should be completed. I recommend repeating in 4-6weeks to track changes. I would be more concerned about her elevated bun and creatinine which may indicate kidney disease and should be investigated with urine tests by your vet to determine the concentrating ability of the kidneys

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