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Thyroid function no better with combination T4/T3 compared to T4 alone.


A double-blind study, presented last week at the 2015 International Thyroid Congress and Annual Meeting of the American Thyroid Association which involved 32 adults with primary hypothyroidism, showed that the combination of T4 (thyroxine) and T3 (liothyronine) was of no significant clinical benefit compared to thyroxine alone. However, there is still need for future studies with longer follow-up to evaluate the effects of T3 in select patients who have ongoing symptoms of hypothyroidism.

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