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 molecular compound composition chemical chemistry structure formula line drawing skeletal flat icon