Fentanyl is a powerful opioid anesthetic and analgesic, the use of which has caused an
increasing public health threat in the United States and elsewhere. Fentanyl was initially …

The opioid overdose epidemic is typically described as having occurred in 3 waves, with
morbidity and mortality accruing over time principally from prescription opioids (1999–2010) …

Abstract In the United States, combined stimulant/opioid overdose mortality has risen
dramatically over the last decade. These increases may particularly affect non-Hispanic …

Aims To examine trends and recent changes in non‐fatal and fatal stimulant overdose rates
with and without opioids to improve the descriptive characterization of the US overdose …

Background Cocaine-involved overdose mortality has recently risen in the United States
(US), yet it is unclear to what extent patterns in cocaine-involved overdose mortality parallel …

Importance Drug overdose deaths continue to increase, despite the leveling off of
prescription opioid use and policy changes limiting opioid prescribing. Illicit fentanyl is the …

The abuse of illicit psychostimulants such as cocaine and methamphetamine continues to
pose significant health and societal challenges. Despite considerable efforts to develop …

Background Polysubstance use is common among people who use drugs, including the co-
use of stimulants and opioids. Research suggests the practice of simultaneous co-injection …

Background The year 2018 marked the first year since 1999 in which the number of drug
overdose deaths in the United States (US) declined compared to the previous year …

Background As the proportion of drug overdose deaths involving fentanyl continues to
increase in the US, monitoring exposure to and possible changes in intention to use fentanyl …