Pharmacology General ccc248df Metyrosin is used in ? A Acromegaly B Cushing syndrome C Addison's disease D Pheochromocytoma High-Yield Explanation Ans: D PheochromocytomaRef: KDT 7/e p. 128, 129; Katzung rlth/e p. g4lRate limiting step (tyrosine hydrorylation) in synthesis of epinephrine is inhibited by metyrosine.