Fatal overdoses involving fentanyl and stimulants, mainly cocaine and methamphetamine, have skyrocketed, ushering in the fourth wave of the US opioid epidemic.
At a time of record-breaking drug overdose deaths, an analysis of urine drug test results shows skyrocketing rates of synthetic opioid use across the country.
Stimulants may lead to better engagement in buprenorphine treatment at the cost of a modest increase in drug overdose risk in patients with opioid addiction.