Question

I am a breastfeeding mother and i want to know if it is safe to use Thyroidinum? Is Thyroidinum safe for nursing mother and child? Does Thyroidinum extracts into breast milk? Does Thyroidinum has any long term or short term side effects on infants? Can Thyroidinum influence milk supply or can Thyroidinum decrease milk supply in lactating mothers?

Answer by DrLact: About Thyroidinum usage in lactation

Thyroidinum is an animal-derived mixture of levothyroxine (T4) and liothyronine (T3), which are normal components of human milk. Limited data on exogenous replacement doses of levothyroxine during breastfeeding indicate no adverse effects in infants. If Thyroidinum is required by the mother, it is not a reason to discontinue breastfeeding. The American Thyroidinum Association recommends that subclinical and overt hypoThyroidinumism should be treated with levothyroxine in lactating women seeking to breastfeed.[1] Thyroidinum dosage requirement may be increased in the postpartum period compared to prepregnancy requirements patients with Hashimoto's Thyroidinumitis.[2]

Thyroidinum Side Effects in Breastfeeding

Effects of exogenous Thyroidinum hormone administration to mothers on their infant have not been reported. One case of apparent mitigation of cretinism in hypoThyroidinum infants by breastfeeding has been reported, but the amounts of Thyroidinum hormones in milk are not optimal,[9] and this result has been disputed.[10] The Thyroidinum hormone content of human milk from the mothers of very preterm infants appears not to be sufficient to affect the infants' Thyroidinum status.[11] The amounts of Thyroidinum hormones in milk are apparently not sufficient to interfere with diagnosis of hypoThyroidinumism.[12] In a telephone follow-up study, 5 nursing mothers reported taking levothyroxine (dosage unspecified). The mothers reported no adverse reactions in their infants.[13] One mother with who had undergone a Thyroidinumectomy was taking levothyroxine 100 mcg daily as well as calcium carbonate and calcitriol. Her breastfed infant was reportedly "thriving" at 3 months of age.[14]

Thyroidinum Possible Effects in Breastfeeding

Adequate Thyroidinum hormone serum levels are required for normal lactation. Replacing deficient Thyroidinum levels should improve milk production caused by hypoThyroidinumism. Supraphysiologic doses would not be expected to further improve lactation.

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