Pharmacology of newly identified nitazene variants reveals structural determinants of affinity, potency, selectivity for mu opioid receptors.  Kozell LB, Eshleman AJ, Wolfrum KM, Swanson TL, Schutzer KA, Schutzer WE, Abbas AI.  Neurophar…

Heroin injection to fentanyl smoking: Examining temporal trends in substance type and route of administration among people who inject drugs in Los Angeles, CA and Denver, CO, USA between 2021-2022.  Ganesh SS, Smeltzer RP, Goldshear JL, Shah P…

Intravenous Fentanyl for Symptom Management in Hospitalized Patients With Refractory Opioid Withdrawal: A Retrospective Cohort Study.  Zazoulina J, Nolan S, Fairbairn N, Ryan A, Dennis BB, Bach P.  J Addict Med. 2025 May 1. doi: 10.1097/…

Notes from the Field: Suspected Medetomidine Withdrawal Syndrome Among Fentanyl-Exposed Patients - Philadelphia, Pennsylvania, September 2024-January 2025.  Huo S, London K, Murphy L, Casey E, Durney P, Arora M, McKeever R, Tasillo A, Goodstei…

Early experiences and impacts of a fentanyl powder safer supply program in Vancouver, Canada: a qualitative study.  Ivsins A, Sutherland C, Kerr T, Kennedy MC.  Am J Drug Alcohol Abuse. 2025 May 6:1-10. doi: 10.1080/00952990.2025.2497800…

Trends in Suspected Fentanyl-Involved Nonfatal Overdose Emergency Department Visits, by Age Group, Sex, and Race and Ethnicity - United States, October 2020-March 2024.  Pickens CM, Park J, Casillas SM, Liu S, Sheppard M, Stokes EK, Ko JY, Lee…