title: Antihistamines and asthma; do they have a role in therapy?
mesh_terms: D001249:Asthma / Q000188:drug therapy*; D001986:Bronchial Spasm / Q000188:drug therapy; D006634:Histamine H1 Antagonists / Q000627:therapeutic use*; D006801:Humans
chemical_list: D006634:Histamine H1 Antagonists