A 'fourth wave'of high mortality involving methamphetamine and cocaine use has been
gathering force in the USA. Availability and use of illicit fentanyls are still the major drivers of …

New psychoactive substances (NPS) are a heterogeneous group of substances. They are
associated with a number of health and social harms on an individual and societal level …

The US mortality rate has gone up three years in a row from 2014 to 2017 (Xu, Murphy,
Kochanek, & Arias, 2016; Murphy, Xu, Kochanek, & Arias, 2018; Kochanek, Murphy, Xu, & …

Abstract Background and Aims Drug checking services provide people who use drugs with
chemical analysis results of their drug samples while simultaneously monitoring the …

Policy Points This article reconceptualizes our understanding of the opioid epidemic and
proposes six strategies that address the epidemic's social roots. In order to successfully …

Background Prevalence of fentanyl-laced counterfeit prescription pills has been increasing
in the US, possibly placing a wider population at risk for unintentional exposure. We aimed …

Background Fentanyl has caused rapid increases in US and Canadian overdose deaths, yet
its presence in illicit drugs is often unknown to consumers. This study examined the validity …

Background From mid-2018, an increase in novel psychoactive substance (NPS)
benzodiazepines was noted on surveillance of the unregulated drug market around …

Importance The rate of deaths from overdose has increased during the COVID-19 pandemic,
and recent US overdose mortality rates have been markedly high. However, scant data are …

Background People who use drugs (PWUD) may be at an increased risk of experiencing
negative effects related to COVID-19. Border and non-essential service closures may have …