title: FDA warns makers   of unapproved thyroid drugs.
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000188:drug therapy*; D004285:Dogs; D017277:Drug Approval; D007037:Hypothyroidism / Q000188:drug therapy / Q000662:veterinary*; D013974:Thyroxine / Q000592:standards* / Q000627:therapeutic use; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D013974:Thyroxine