title: Beta blockers and verapamil: a cautionary tale.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000378:metabolism*; D004347:Drug Interactions; D006801:Humans; D014700:Verapamil / Q000378:metabolism*
chemical_list: D000319:Adrenergic beta-Antagonists; D014700:Verapamil