Euthyrox 150mcg is a prescription medication containing levothyroxine sodium, used for thyroid hormone replacement therapy. Each pack contains 100 tablets with 150 micrograms of the active ingredient per tablet. The medication is manufactured by Merck Serono. This medication requires a valid prescription and should only be taken under medical supervision. The tablets come in a blister pack format for easy dispensing and tracking of doses. Euthyrox is used to treat hypothyroidism and other thyroid hormone deficiency conditions. The 150mcg strength represents one of several available dosage options that allows for precise dosing based on individual patient needs.