[Older antihistaminics often act as sedatives. Hay fever gone -- reaction capacity, too].
D002986:Clinical Trials as Topic; D039563:Histamine H1 Antagonists, Non-Sedating / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D017336:Loratadine / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D010919:Placebos; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*
D039563:Histamine H1 Antagonists, Non-Sedating; D010919:Placebos; D017336:Loratadine; C121345:desloratadine