Evidence map›Paper›PMID 35370014›Full record

ArticleDrug and alcohol dependence2022

Trends in seizures of powders and pills containing illicit fentanyl in the United States, 2018 through 2021.

Joseph J Palamar, Daniel Ciccarone, Caroline Rutherford, Katherine M Keyes, Thomas H Carr, Linda B Cottler

Abstract read
In one paragraph

Article in Drug and alcohol dependence, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

71 citing papers in PubMed.

  1. Nonfatal Drug Overdose in a National Sample of Adolescents by Intent and Substance, Medicaid 2016-2020.Journal of the American Academy of Child and Adolescent Psychiatry · 2026
    Article
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  8. The Donovan Memorial Lecture: 'Fentanyl-Plus': A New Era of Fentanyl Polydrug Combinations in the North American Overdose Crisis.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2026
    Article
  9. Hospital Care for Pregnant Persons With OUD Review.American journal of medicine open · 2025
    Review
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  18. Observational
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  20. Optimizing placement of public-access naloxone kits using geospatial analytics: a modelling study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Article

11 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Joseph J PalamarNew York University Grossman School of Medicine, Department of Population Health, New York, NY, USA. Electronic address: joseph.palamar@nyulangone.org.
Daniel CiccaroneUniversity of California, San Francisco, Department of Family and Community Medicine, San Francisco, CA, USA.
Caroline RutherfordColumbia University, Department of Epidemiology, Mailman School of Public Health, New York, NY, USA.
Katherine M KeyesColumbia University, Department of Epidemiology, Mailman School of Public Health, New York, NY, USA.
Thomas H CarrCollege of Public Affairs, Center for Drug Policy and Prevention, University of Baltimore, United States; Office of National Drug Control Policy, Washington, Baltimore High Intensity Drug Trafficking Areas Program, United States, Center for Drug Policy and Prevention, University of Baltimore, United States.
Linda B CottlerNDEWS, University of Florida, United States; University of Florida, Department of Epidemiology, College of Public Health and Health Professions, College of Medicine, United States.

Funding

National Drug Early Warning System (NDEWS) COVID-19 SupplementU01DA051126 · NIDA · UNIVERSITY OF FLORIDA · PI Linda B. Cottler, Joseph J Palamar · 2020 to 2026
$6.3M
Synthetics in Combination (SYNC)R01DA054190 · NIDA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DANIEL H CICCARONE · 2021 to 2026
$4.3M
Drug use among nightclub and dance festival attendees in New York CityR01DA044207 · NIDA · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI PALAMAR, JOSEPH J · 2018 to 2021
$1.5M
NIDA NIH HHS R01 DA044207NIDA NIH HHS R01 DA054190NIDA NIH HHS U01 DA051126
6 · The paper itself

Abstract

backgroundPrevalence of fentanyl-laced counterfeit prescription pills has been increasing in the US, possibly placing a wider population at risk for unintentional exposure. We aimed to determine whether there have been shifts in the number of fentanyl seizures and in the form of fentanyl seized in the US.

methodsWe examined quarterly national seizure data from High Intensity Drug Trafficking Areas to determine the number of drug seizures in the US containing fentanyl from January 2018 through December 2021. Generalized additive models were used to estimate trends in the number and weight of pill and powder seizures containing fentanyl.

resultsThere was an increase both in the number of fentanyl-containing powder seizures (from 424 in 2018 Quarter 1 [Q1] to 1539 in 2021 Quarter 4 [Q4], β = 0.94, p < 0.001) and in the number of pill seizures (from 68 to 635, β = 0.96, p < 0.01). The proportion of pills to total seizures more than doubled from 13.8% in 2018 Q1 to 29.2% in 2021 Q4 (β = 0.92, p < 0.001). Weight of powder fentanyl seizures increased from 298.2 kg in 2018 Q1 to 2416.0 kg in 2021 Q4 (β = 1.12, p = 0.01); the number of pills seized increased from 42,202 in 2018 Q1 to 2,089,186 in 2021 Q4 (β = 0.90, p < 0.001).

conclusionsSeizures of drugs containing fentanyl have been increasing in the US. Given that over a quarter of fentanyl seizures are now in pill form, people who obtain counterfeit pills such as those disguised as oxycodone or alprazolam are at risk for unintentional exposure to fentanyl.

Indexed as

Drug and Narcotic ControlDrug OverdoseFentanylIllicit DrugsAnalgesics, OpioidHumansOxycodonePowdersUnited StatesAnalgesics, OpioidFentanylIllicit DrugsOxycodonePowdersCounterfeit pillsDrug seizuresFentanyl

Identifiers

PMID35370014
PMCPMC9027012

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.