Nicole D Fitzgerald, Joseph J Palamar, Linda B Cottler
{"title":"Use of Illegally Manufactured Fentanyl in the United States: Current Trends.","authors":"Nicole D Fitzgerald, Joseph J Palamar, Linda B Cottler","doi":"10.1007/s40429-025-00625-y","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose of review: </strong>As the overdose crisis evolves, it is important to monitor fentanyl consumption patterns. This review provides an overview of recent findings regarding illegally manufactured fentanyl (IMF) availability, use, and associated harms in the US.</p><p><strong>Recent findings: </strong>Availability of IMF has increased, especially in pill form, and the increasing adulteration of IMF with veterinary tranquilizers such as xylazine complicates overdose response. Prevalence in the general population based on self-reported IMF use is rare, and likely underestimated. Transitions from injection to smoking have been documented in recent years, particularly in the western US. Fentanyl-stimulant polysubstance use has also been observed increasingly among IMF-related overdose deaths.</p><p><strong>Summary: </strong>Shifts in routes of administration, availability of counterfeit pills containing fentanyl, and common adulterants add complexity to the landscape of IMF use and related harms. Additional data is needed for monitoring changes in consumption patterns to inform prevention and harm reduction efforts.</p>","PeriodicalId":52300,"journal":{"name":"Current Addiction Reports","volume":"12 1","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12346689/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Addiction Reports","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s40429-025-00625-y","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/29 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"SUBSTANCE ABUSE","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose of review: As the overdose crisis evolves, it is important to monitor fentanyl consumption patterns. This review provides an overview of recent findings regarding illegally manufactured fentanyl (IMF) availability, use, and associated harms in the US.
Recent findings: Availability of IMF has increased, especially in pill form, and the increasing adulteration of IMF with veterinary tranquilizers such as xylazine complicates overdose response. Prevalence in the general population based on self-reported IMF use is rare, and likely underestimated. Transitions from injection to smoking have been documented in recent years, particularly in the western US. Fentanyl-stimulant polysubstance use has also been observed increasingly among IMF-related overdose deaths.
Summary: Shifts in routes of administration, availability of counterfeit pills containing fentanyl, and common adulterants add complexity to the landscape of IMF use and related harms. Additional data is needed for monitoring changes in consumption patterns to inform prevention and harm reduction efforts.
期刊介绍:
This journal focuses on the prevention, assessment and diagnosis, and treatment of addiction. Designed for physicians and other mental health professionals who need to keep up-to-date with the latest research, Current Addiction Reports offers expert reviews on the most recent and important research in addiction. We accomplish this by appointing leaders in the field to serve as Section Editors in key subject areas and disciplines, such asAlcoholTobaccoStimulants, cannabis, and club drugsBehavioral addictionsGender disparities in addictionComorbid psychiatric disorders and addictionSubstance abuse disorders and HIVSection Editors, in turn, select the most pressing topics as well as experts to evaluate the latest research, report on any controversial discoveries or hypotheses of interest, and ultimately bring readers up-to-date on the topic. Articles represent interdisciplinary endeavors with research from fields such as psychiatry, psychology, pharmacology, epidemiology, and neuroscience.Additionally, an international Editorial Board—representing a range of disciplines within addiction medicine—ensures that the journal content includes current, emerging research and suggests articles of special interest to their country or region.