THYRO-TABS® is a prescription drug containing levothyroxine sodium as the active ingredient. Levothyroxine is a replacement for the hormone T-4, which is naturally produced in the body by the thyroid gland to regulate metabolism and energy.
THYRO-TABS® is the only veterinary brand to retain the USP* tablet designation and is guaranteed to minimum 95% dose potency for a full 24 months from the date of manufacture.