title: Generic substitution in allergic rhinitis.
authors: Sharon
authors: S
authors: Kling
mesh_terms: D016568:Drugs, Generic / Q000627:therapeutic use*; D006634:Histamine H1 Antagonists / Q000627:therapeutic use*; D006801:Humans; D017410:Practice Guidelines as Topic; D012221:Rhinitis, Allergic, Perennial / Q000188:drug therapy*; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*; D013019:South Africa
chemical_list: D016568:Drugs, Generic; D006634:Histamine H1 Antagonists