Last update Dec. 8, 2017
Very Low Risk
Synthetic preparation of human thyroid hormone T3 used in the treatment of hypothyroidism.
Since the last update, we have not found published data on its excretion in breast milk.
T3 is a natural component of breast milk, found in small concentrations that may or may not depend on plasma levels (Zhang 2013, Oberkotter 1989, Jansson 1983, Mizuta 1983, Sato 1979). Its concentration in breast milk is much higher than that of levothyroxine (T4), which is usually undetectable (Jansson 1983, Sato 1979).
Until there is more published data on this drug in relation to breastfeeding, safer known alternatives (levothyroxine) may be preferable, especially during the neonatal period and in case of prematurity.
Associations which are experts in thyroid diseases recommend treatment with levothyroxine in breastfeeding mothers affected by hypothyroidism (Alexander 2017).
Suggestions made at e-lactancia are done by APILAM team of health professionals, and are based on updated scientific publications. It is not intended to replace the relationship you have with your doctor but to compound it. The pharmaceutical industry contraindicates breastfeeding, mistakenly and without scientific reasons, in most of the drug data sheets.
Your contribution is essential for this service to continue to exist. We need the generosity of people like you who believe in the benefits of breastfeeding.
Thank you for helping to protect and promote breastfeeding.
e-lactancia is a resource recommended by Academy of Breastfeeding Medicine - 2012 of United States of America
Would you like to recommend the use of e-lactancia? Write to us at corporate mail of APILAM