Euthyrox is generally referred to as levothyroxine sodium tablets. Taking levothyroxine sodium tablets is able to breastfeed; it is necessary to maintain thyroid hormones at normal levels, and at the recommended therapeutic dose, the amount secreted into the milk during breastfeeding is not sufficient to cause adverse effects on the infant. Levothyroxine sodium tablets belong to the thyroid hormone class of drugs, can be used for the treatment of various causes of hypothyroidism; breastfeeding women taking levothyroxine sodium tablets are also able to continue breastfeeding. Special care should be taken to continue thyroxine therapy during pregnancy and lactation. At the recommended therapeutic dose, the amount of thyroid hormone secreted into breast milk during breastfeeding is not sufficient to cause hyperthyroidism or suppression of TSH secretion in the infant. Patients requiring treatment with Levothyroxine Sodium Tablets who are breastfeeding should use the medication as prescribed by their physician.