title: Antihistamines.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D006634:Histamine H1 Antagonists / Q000494:pharmacology* / Q000627:therapeutic use / Q000633:toxicity; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged
chemical_list: D006634:Histamine H1 Antagonists