Levothyroxine is used in:: (A) Thyroid storm, (B) Cretinism, (C) Endemic goiter, (D) Grave's disease
Answer is B. L-thyroxine is thyroxine analogue. It has a a more sustained and uniform action. It is used in cretinsm and in hypothyroidism it contains T4 T3 medication is liothyronine which is used very rarely -only in myxedema coma (REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 248)