<prompt> Drug that leads to glucose intolerance:HydrochlorthiazideACE inhiitorsVerapamilSulfonylureas  <response>: Ans. a HydrochlorthiazideRef KDT 6th. 274Drugs causing glucose intolerance hyperglycemia Glucocorticoids Thiazides Phenytoin Pentamidine Diazoxide b blockers non selective Protease inhibitors b-IFN Clozapine b adrenergic agonist Thyroid hormone Nicotinic acidNote: Sulfonylureas are oral hypoglycemic agents. They causes hypoglycemia. ACE inhibitors also causes hypoglycemia. Other agents causing hypoglycemia: Quinine, Pentamidine, Octreotide, Insulin. 