title: Comparative trial of two non-sedative H1 antihistamines, terfenadine and astemizole, for hay fever.
authors.forename: B J
authors.initials: BJ
authors.lastname: Freedman
mesh_terms: D016589:Astemizole; D001559:Benzhydryl Compounds / Q000008:administration & dosage*; D001562:Benzimidazoles / Q000008:administration & dosage*; D006634:Histamine H1 Antagonists / Q000008:administration & dosage*; D006801:Humans; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*; D016593:Terfenadine
chemical_list: D001559:Benzhydryl Compounds; D001562:Benzimidazoles; D006634:Histamine H1 Antagonists; D016593:Terfenadine; D016589:Astemizole