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Journal of General Internal Medicine

, Volume 34, Issue 8, pp 1554–1563 | Cite as

Prescription Medications for the Treatment of Insomnia and Risk of Suicide Attempt: a Comparative Safety Study

  • Jill E. LavigneEmail author
  • Kwan Hur
  • Cathleen Kane
  • Anthony Au
  • Todd M. Bishop
  • Wilfred R. Pigeon
Original Research

Abstract

Importance

Guidelines for the pharmacological treatment of chronic insomnia in adults recognize that trazodone and other off-label medications are commonly prescribed despite poor evidence. The Department of Veterans Health Affairs (VA) fills high volumes of inexpensive, over-the-counter sedating antihistamines and older antidepressants in addition to benzodiazepines and zolpidem. Yet little is known about the comparative safety of these agents with regard to suicidal behavior.

Objectives

To assess the comparative effectiveness of the safety of medications routinely used to treat insomnia in VA.

Design

Comparative effectiveness using propensity score-matched samples.

Setting

VA.

Participants

VA patients without any history of suicidal ideation or behavior 12 months prior to first exposure.

Exposures

VA formularies and data were used to identify prescriptions for insomnia. Agents accounting for at least 1% of total insomnia fill volume were < 200 mg trazodone, hydroxyzine, diphenhydramine, zolpidem, lorazepam, diazepam, and temazepam. Exposure was defined as an incident monotherapy exposure preceded by 12 months without any insomnia medications. Subjects with insomnia polypharmacy or cross-overs in the 12 months following first exposure were excluded.

Main Outcomes and Measures

Suicide attempts within 12 months of first exposure.

Results

Three hundred forty-eight thousand four hundred forty-nine subjects met criteria and three well-balanced cohorts by drug class matched to zolpidem were created. After adjusting for days’ supply, mental health history, and pain and central nervous system medication history, hazard ratios (compared to zolpidem) were as follows: (< 200 mg) trazodone (HR = 1.61, 95% CI 1.07–2.43); sedating antihistamines (HR = 1.37, 95% CI 0.90–2.07); and benzodiazepines (HR = 1.31, 95% CI 0.85–2.08).

Conclusions and Relevance

Compared to zolpidem, hazard of suicide attempt was 61% higher with trazodone (< 200 mg). No significant differences in suicide attempt risk were identified between benzodiazepines or sedating antihistamines and zolpidem, respectively. These findings provide the first comparative effectiveness evidence against the use of trazodone for insomnia.

KEY WORDS

suicide suicide attempt suicidal behavior insomnia comparative safety pharmacotherapy medication drug antihistamines benzodiazepines zolpidem hypnotics trazodone Veteran 

Notes

Authors’ Contributions

Jill E. Lavigne, Ph.D.,1,9 drafted the manuscript and led the study, including identification of monotherapies and concomitant medications, interpretation of results, and drafting of the manuscript. Kwan Hur, Ph.D.,2 designed the statistical analysis, guided the interpretation of results, and participated in the writing of the manuscript. Cathleen Kane, M.S.,9 led the data management and implementation of the analyses and contributed to the interpretation of results. Anthony Au, Pharm.D.,2 advised on the use of medications commonly used in VA to treat insomnia and central nervous system medications. Todd M. Bishop, Ph.D.,3,9 contributed to the literature review and discussion. Wilfred R. Pigeon, Ph.D.,3,9 contributed to the discussion section of the manuscript, participated in manuscript preparation, and supported acquisition of funding and other resources.

Funding/Support

This work was supported by the Department of Veterans Affairs Office of Mental Health and Suicide Prevention with in-kind support provided by the Center of Excellence for Suicide Prevention at the VISN 2 Canandaigua VAMC.

Compliance with Ethical Standards

This study was approved by the VA VISN2 (Syracuse VA) Institutional Review Board.

Conflict of Interest

Dr. Pigeon received speaker fees from Merck in 2015. All other authors have no conflicts of interest to report.

Disclaimer

The authors’ views or opinions do not necessarily represent those of the Department of Veterans Affairs or the United States Government.

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Copyright information

© Society of General Internal Medicine (This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply) 2019

Authors and Affiliations

  • Jill E. Lavigne
    • 1
    • 2
    Email author
  • Kwan Hur
    • 3
  • Cathleen Kane
    • 1
  • Anthony Au
    • 3
  • Todd M. Bishop
    • 1
    • 4
  • Wilfred R. Pigeon
    • 1
    • 4
  1. 1.Center of Excellence for Suicide PreventionCanandaigua VA Medical CenterCanandaiguaUSA
  2. 2.St John Fisher CollegeWegnens School of PharmacyRochesterUSA
  3. 3.VA Center for Medication SafetyHinesUSA
  4. 4.Department of PsychiatryUniversity of Rochester Medical CenterRochesterUSA

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