Euthyrox generally refers to levothyroxine sodium tablets. There is no data on how long you can breastfeed after taking Levothyroxine Sodium Tablet, but the thyroid hormone in breast milk is trace, so direct breastfeeding should generally not have much effect, but it is still recommended that breastfeeding can be done at intervals of two hours or more. Levothyroxine sodium tablets are mainly used for the treatment of hypothyroidism, simple goiter, chronic lymphoid thyroiditis and other diseases. Trace amounts of thyroid hormone may be excreted in breast milk when administered to nursing women during thyroid replacement therapy. There is no clear information on how long it takes to breastfeed after using Levothyroxine Sodium Tablet. Because of the trace amounts of thyroid hormone in breast milk, direct breastfeeding should not normally have much effect, but patients with sufficient time may breastfeed at intervals of two hours or more. Levothyroxine Sodium Tablet may cause angina, arrhythmia, palpitations, diarrhea, vomiting and other adverse reactions after use. Specific use should be carried out under the guidance of a doctor, do not take on your own.