Is Thyroid gland Safe in Breastfeeding

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

Thyroid gland 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 Thyroid gland is required by the mother, it is not a reason to discontinue breastfeeding. The American Thyroid gland Association recommends that subclinical and overt hypoThyroid glandism should be treated with levothyroxine in lactating women seeking to breastfeed.[1] Thyroid gland dosage requirement may be increased in the postpartum period compared to prepregnancy requirements patients with Hashimoto's Thyroid glanditis.[2]

Effects of exogenous Thyroid gland hormone administration to mothers on their infant have not been reported. One case of apparent mitigation of cretinism in hypoThyroid gland infants by breastfeeding has been reported, but the amounts of Thyroid gland hormones in milk are not optimal,[9] and this result has been disputed.[10] The Thyroid gland hormone content of human milk from the mothers of very preterm infants appears not to be sufficient to affect the infants' Thyroid gland status.[11] The amounts of Thyroid gland hormones in milk are apparently not sufficient to interfere with diagnosis of hypoThyroid glandism.[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 Thyroid glandectomy 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]

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