Article Text

Download PDFPDF
Use of liothyronine (L-T3) as an augmentation therapy for depression during pregnancy


The thyroid hormone triiodothyronine (T3) can be used as an augmentation therapy for depression. This case involves a patient who had been initiated on liothyronine (L-T3) for this purpose and subsequently became pregnant. The exogenous T3 affected maternal thyroid hormone production, including suppression of her thyroxine (T4) levels. In pregnancy, maternal T4 is important for fetal neurodevelopment. Accordingly, use of exogenous T3 for adjunct treatment of depression in pregnant patients or those planning pregnancy requires careful laboratory monitoring of thyroid function tests. In this case, L-T3 was discontinued and the patient was eventually started on levothyroxine (L-T4) and went on to have an uneventful pregnancy.

  • depressive disorder
  • pregnancy
  • thyroid disease
  • general practice / family medicine

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.