title: Choice of antihistamines for allergic rhinitis.
mesh_terms: D001559:Benzhydryl Compounds / Q000627:therapeutic use; D002974:Clemastine / Q000627:therapeutic use; D006634:Histamine H1 Antagonists / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*; D016593:Terfenadine
chemical_list: D001559:Benzhydryl Compounds; D006634:Histamine H1 Antagonists; D016593:Terfenadine; D002974:Clemastine