Methods are provided for treatment of disorders associated with excess cortisol production, including, but not limited to, treatment of Cushing's syndrome. Such methods involve administration of a therapeutically effective amount of a combination of: (a) an inhibitor of CYP11B1； and (b) ACAT1 inhibitor N-(2,6-bis(1-methylethyl)phenyl)-N′-((1-(4-(dimethyl-lamino)phenyl)cyclopentyl)-methyl)urea or a salt thereof； or (a) an inhibitor of CYP11B1； (b) an inhibitor of CYP11B2； and (c) ACAT1 inhibitor N-(2,6-bis(1-methylethyl)phenyl)-N′-((1-(4-(dimethyl-lamino)phenyl)cyclopentyl)-methyl)urea or a salt thereof.
