Deladoëy J and Van Vliet G. Treating Congenital Hypothyroidism: which levothyroxine? Nat Rev Endocrinol 2013 (Epub 5 March 2013)

Importantly, parents of infants with congenital hypothyroidism must be reassured that, provided that their infant’s serum TSH concentration is not markedly raised after the first 2 weeks of treatment and that monitoring at regular intervals occurs, the outcome will be good and will not depend on the type of levothyroxine medication used. Switching brands should be avoided, as it requires additional drawing of blood to measure TSH levels.

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