title: Antihistamines are safe during the first trimester.
authors.affiliation: University of Toronto.
authors.forename: G
authors.initials: G
authors.lastname: Koren
mesh_terms: D000014:Abnormalities, Drug-Induced / Q000209:etiology; D005260:Female; D006634:Histamine H1 Antagonists / Q000627:therapeutic use*; D006801:Humans; D006967:Hypersensitivity / Q000188:drug therapy*; D009325:Nausea / Q000188:drug therapy; D011247:Pregnancy; D011248:Pregnancy Complications / Q000188:drug therapy*; D011261:Pregnancy Trimester, First; D014839:Vomiting / Q000188:drug therapy
chemical_list: D006634:Histamine H1 Antagonists