Background Overdoses involving opioids and stimulants are on the rise, yet few studies
have examined longitudinal trends in use of both substances. We sought to describe use …

Background This study compared drug overdose mortality rates in Puerto Rican-heritage
and Non-Hispanic (NH) White individuals in the United States (US), examining time trends …

The number of drug overdoses and deaths has increased significantly over the past decade
and co-use of opioids and stimulants is associated with greater likelihood of overdose and …

Introduction Methamphetamine use is more common than opioid use among prison entrants
in some countries, including Australia, yet most research and policy focuses on opioid use …

Introduction To characterize and compare opioid-only, cocaine-only, methamphetamine-
only, opioid-and-cocaine exposure, and opioid-and-methamphetamine exposure and to …

Background For people with opioid use disorder who are not responding to oral opioid
agonist treatment, evidence supports the effectiveness of injectable opioid agonist treatment …

Introduction The opioid crisis is transitioning to a polydrug crisis, and individuals with co-
occurring substance use disorder (SUDs) often have unique clinical characteristics and …

Objective: This study aimed to assess nationwide trends in attention-deficit hyperactivity
disorder (ADHD) diagnoses and pharmacotherapy among patients with opioid use disorder …

In the early 2000s, increasing prevalence of psycho-stimulant (eg, crack/cocaine,
methamphetamine) use and related harms, including severe adverse health outcomes, was …

Background During a public health overdose emergency driven by fentanyl in British
Columbia (BC), Canada, a parallel increase in concurrent use of methamphetamines may …