title: Clinical trials of a new antihistaminic HS 592.
mesh_terms: D002974:Clemastine / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D006634:Histamine H1 Antagonists / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D011759:Pyrrolidines / Q000627:therapeutic use*; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*; D013607:Tablets
chemical_list: D006634:Histamine H1 Antagonists; D011759:Pyrrolidines; D013607:Tablets; D002974:Clemastine