title: Summary of four UK clinical trials with terfenadine.
mesh_terms: D001559:Benzhydryl Compounds / Q000009:adverse effects / Q000627:therapeutic use*; D002744:Chlorpheniramine / Q000627:therapeutic use; D006634:Histamine H1 Antagonists / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D012221:Rhinitis, Allergic, Perennial / Q000188:drug therapy*; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*; D016593:Terfenadine; D006113:United Kingdom
chemical_list: D001559:Benzhydryl Compounds; D006634:Histamine H1 Antagonists; D002744:Chlorpheniramine; D016593:Terfenadine