title: Levocetirizine: new preparation. Me-too: simply the active enantiomer of cetirizine.
abstract: Levocetirizine is the active enantiomer of cetirizine. According to the only available comparative trial in patients with seasonal allergic rhinitis, 5 mg levocetirizine is equivalent to 10 mg cetirizine.
mesh_terms: D018926:Anti-Allergic Agents / Q000009:adverse effects / Q000627:therapeutic use; D017332:Cetirizine / Q000009:adverse effects / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006634:Histamine H1 Antagonists / Q000009:adverse effects / Q000627:therapeutic use; D006801:Humans; D010879:Piperazines / Q000009:adverse effects / Q000627:therapeutic use*; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*; D014581:Urticaria / Q000188:drug therapy*
chemical_list: D018926:Anti-Allergic Agents; D006634:Histamine H1 Antagonists; D010879:Piperazines; D017332:Cetirizine