<prompt> All of the following are rare but life-threatening adverse effects of thioamide group of anti-thyroid drugs except:AgranulocytosisAplasia anemiaLiver toxicityLung fibrosis  <response>: Ans. D Lung fibrosisRef: KDT 8th275-276Thioamides include drugs like methimazole, carbimazole and propylthiouracil.Agranulocytosis and aplastic anemia is serious side effect of all of these drugs but it is seen rarely.Propylthiouracil is associated with hepatotoxicity.All the 3 drugs are teratogenic. Least teratogenic is propylthiouracil. 