thyroxine (t4, levothyroxine) thyroid hormone molecule. prohormone of thyronine (t3). used as drug to treat hypothyroidism

thyroxine thyroxin t4 prohormone thyroid gland hormone deficiency drug goitre deiodinase metabolism tsh stimulating t3 thyronine tbg binding globulin hyperthyroidism graves disease hypothyroidism carbon hydrogen oxygen nitrogen iodine molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula blackboard chalkboard chalk written writing drawing background ring line skeletal flat icon stylized style