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Abstract
Background:
Unhealthy alcohol use is the third leading preventable cause of death in the United States, accounting for more than 140,000 deaths annually. Only 0.9 percent of Americans who reported having alcohol use disorder (AUD) in the past year indicated they received medication-assisted AUD treatment.
Methods:
We updated a 2014 Agency for Healthcare Research and Quality (AHRQ) report on pharmacotherapy for AUD treatment, following AHRQ Evidence-based Practice Center Guidance. We assessed efficacy and comparative effectiveness of specific medications for improving consumption outcomes (Key Question [KQ] 1) and health outcomes (KQ 2). We assessed harms (KQ 3) and sought to identify evidence for the use of pharmacotherapy to treat AUD in primary care (KQ 4) and among subgroups (KQ 5). When possible, we conducted quantitative analyses using random-effects models to estimate pooled effects. When quantitative analyses could not be conducted, we used qualitative approaches.
Results:
We included 118 studies (156 articles) in our review, which included 81 studies (106 articles) from the 2014 review and 37 studies (50 articles) published since then. Studies generally included counseling co-interventions in all study groups, and the benefits observed reflect the added benefit of medications beyond those of counseling and placebo. Oral naltrexone at the 50 mg dosage had moderate strength of evidence (SOE) for reducing return to any drinking, return to heavy drinking, percent drinking days, and percent heavy drinking days. The addition of a new randomized controlled trial of injectable naltrexone conducted in a population experiencing homelessness resulted in positive outcomes for a reduction in drinking days and heavy drinking days with low SOE. Acamprosate had moderate SOE for a significant reduction in return to any drinking and reduction in drinking days. Topiramate had moderate SOE for several outcomes as well, but with greater side effects. Two other medications demonstrated low SOE for benefit in at least one consumption outcome—baclofen (reduced return to any drinking) and gabapentin (reduced return to drinking and to heavy drinking). With no new studies on disulfiram, there remains inadequate evidence for efficacy compared to placebo for preventing return to any drinking or for other alcohol consumption outcomes. No new eligible studies provided head-to-head comparisons.
Conclusions:
Oral naltrexone at the 50 mg dose had moderate strength of evidence across multiple outcomes and relative ease of use as a once-daily oral medication. Acamprosate and topiramate also have moderate evidence of benefit with a less desirable side effect profile (topiramate) and a higher pill burden (acamprosate). Clinicians and patients may want to consider which treatment outcomes are most important when choosing among the medications. Current data are largely insufficient for understanding health outcomes. Finally, there is relatively little research to assess the use of medications for AUD among subgroups (9 studies) or in primary care settings (1 study).
Contents
Suggested citation:
McPheeters M, O’Connor EA, Riley S, Kennedy SM, Voisin C, Kuznacic K, Coffey CP, Edlund M, Bobashev G, Jonas DE. Pharmacotherapy for Adults With Alcohol Use Disorder in Outpatient Settings: Systematic Review. Comparative Effectiveness Review No. 262. (Prepared by the RTI International–University of North Carolina at Chapel Hill Evidence-based Practice Center under Contract No. 75Q80120D00007.) AHRQ Publication No. 23(24)-EHC011. Rockville, MD: Agency for Healthcare Research and Quality; November 2023. DOI: https://doi.org/10.23970/AHRQEPCCER262. Posted final reports are located on the Effective Health Care Program search page.
This report is based on research conducted by the RTI International–University of North Carolina (UNC) at Chapel Hill Evidence-based Practice Center (EPC) under contract to the Agency for Healthcare Research and Quality (AHRQ), Rockville, MD (Contract No. 75Q80120D00007). The findings and conclusions in this document are those of the authors, who are responsible for its contents; the findings and conclusions do not necessarily represent the views of AHRQ. Therefore, no statement in this report should be construed as an official position of AHRQ or of the U.S. Department of Health and Human Services.
None of the investigators have any affiliations or financial involvement that conflicts with the material presented in this report.
The information in this report is intended to help healthcare decision makers—patients and clinicians, health system leaders, and policymakers, among others—make well-informed decisions and thereby improve the quality of healthcare services. This report is not intended to be a substitute for the application of clinical judgment. Anyone who makes decisions concerning the provision of clinical care should consider this report in the same way as any medical reference and in conjunction with all other pertinent information, i.e., in the context of available resources and circumstances presented by individual patients.
This report is made available to the public under the terms of a licensing agreement between the author and the Agency for Healthcare Research and Quality. Most AHRQ documents are publicly available to use for noncommercial purposes (research, clinical or patient education, quality improvement projects) in the United States, and do not need specific permission to be reprinted and used unless they contain material that is copyrighted by others. Specific written permission is needed for commercial use (reprinting for sale, incorporation into software, incorporation into for-profit training courses) or for use outside of the U.S. If organizational policies require permission to adapt or use these materials, AHRQ will provide such permission in writing.
AHRQ or U.S. Department of Health and Human Services endorsement of any derivative products that may be developed from this report, such as clinical practice guidelines, other quality enhancement tools, or reimbursement or coverage policies, may not be stated or implied.
A representative from AHRQ served as a Contracting Officer’s Representative and reviewed the contract deliverables for adherence to contract requirements and quality. AHRQ did not directly participate in the literature search, determination of study eligibility criteria, data analysis, interpretation of data, or preparation or drafting of this report.
AHRQ appreciates appropriate acknowledgment and citation of its work. Suggested language for acknowledgment: This work was based on an evidence report, Pharmacotherapy for Adults With Alcohol-Use Disorder in Outpatient Settings: Systematic Review, by the Evidence-based Practice Center Program at the Agency for Healthcare Research and Quality (AHRQ).
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