title: Antihistamine meta-analysis leaves uncertainty.
authors.forename: Gail G
authors.initials: GG
authors.lastname: Shapiro
mesh_terms: D004155:Diphenhydramine / Q000494:pharmacology*; D016527:Drug Costs; D006633:Histamine Antagonists / Q000191:economics / Q000494:pharmacology*; D006634:Histamine H1 Antagonists / Q000494:pharmacology*; D039563:Histamine H1 Antagonists, Non-Sedating / Q000494:pharmacology*; D006801:Humans; D006993:Hypnotics and Sedatives / Q000494:pharmacology*; D015201:Meta-Analysis as Topic; D011597:Psychomotor Performance / Q000187:drug effects*
chemical_list: D006633:Histamine Antagonists; D006634:Histamine H1 Antagonists; D039563:Histamine H1 Antagonists, Non-Sedating; D006993:Hypnotics and Sedatives; D004155:Diphenhydramine