title: Verapamil and cluster headache.
authors.forename: T
authors.initials: T
authors.lastname: Catarci
authors.forename: T S
authors.initials: TS
authors.lastname: Steiner
mesh_terms: D003027:Cluster Headache / Q000188:drug therapy*; D004334:Drug Administration Schedule; D006801:Humans; D014700:Verapamil / Q000008:administration & dosage*
chemical_list: D014700:Verapamil