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About Thyro-Tabs

Levothyroxine T4 is a naturally circulating thyroid hormone produced by the canine thyroid gland. Levothyroxine sodium provided by Thyro-Tabs® Canine tablets cannot be distinguished from levothyroxine endogenously secreted from the dog’s thyroid gland. Thyroid hormones influence virtually every body organ, either by their effect on growth and development or by the hormones’ metabolic effects.


For replacement therapy for diminished thyroid function in dogs (canine hypothyroidism).


  • First and Only FDA approved canine T4 brand.
  • First and Only canine T4 brand to achieve Higher USP tablet Standard.
  • First and Only canine T4 delivers 24-month dose stability.


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