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The Risk of Adverse Pregnancy Outcome After First Trimester Exposure to H1 Antihistamines: A Systematic Review and Meta-Analysis

Author

Listed:
  • Fatma Etwel

    (Schulich School of Medicine and Dentistry, Western University)

  • Lauren H. Faught

    (Schulich School of Medicine and Dentistry, Western University)

  • Michael J. Rieder

    (Schulich School of Medicine and Dentistry, Western University)

  • Gideon Koren

    (Schulich School of Medicine and Dentistry, Western University)

Abstract

Introduction H1 antihistamines are used for the treatment of nausea and vomiting during pregnancy as well as the symptomatic relief of asthma, urticaria, allergy, and the common cold. Although they are overall felt to be safe during pregnancy, recently several studies have challenged this assumption, as millions of women are exposed to them in the first trimester. Methods Following the guidelines of PRISMA, a systematic review was performed to retrieve all published articles involving H1-antihistamine exposure during pregnancy. Electronic databases including PubMed and EMBASE were searched for possibly relevant articles published in any language up to December 2015. Results After removing duplicate publications, and excluding animal studies and studies on drug effectiveness, 342 articles were reviewed in detail and 37 studies fulfilled the inclusion criteria for the meta-analysis. In cohort studies, the risk of major malformation in the offspring of women exposed to H1 antihistamines was not higher than that of the control population (OR 1.07; 95% CI 0.98–1.16). The Q-statistic for heterogeneity of effects was not significant (p > 0.05, I 2

Suggested Citation

  • Fatma Etwel & Lauren H. Faught & Michael J. Rieder & Gideon Koren, 2017. "The Risk of Adverse Pregnancy Outcome After First Trimester Exposure to H1 Antihistamines: A Systematic Review and Meta-Analysis," Drug Safety, Springer, vol. 40(2), pages 121-132, February.
    • Handle: RePEc:spr:drugsa:v:40:y:2017:i:2:d:10.1007_s40264-016-0479-9
    DOI: 10.1007/s40264-016-0479-9
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