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

atomic atoms binding carbon chemical chemistry composition compound deficiency deiodinase disease drawing drug flat formula gland globulin goitre graves hormone hydrogen hyperthyroidism hypothyroidism icon iodine line metabolism molecular molecule nitrogen oxygen prohormone skeletal stimulating structure t3 t4 tbg thyroid thyronine thyroxin thyroxine tsh