Polysubstance use disorder is a mental health condition in which someone uses more than one substance at the same time or within a short period of time, despite a pattern of negative effects.

A massive survey recently released by a national drug-testing company strongly suggests we are well into the “fourth wave” of the opioid crisis. The three previous waves were driven by 1) prescription ...

Polysubstance use refers to the consumption of two or more substances simultaneously or within a short time frame. This practice can occur either intentionally, where individuals seek to enhance or ...

Most research suggests that opioid overdoses involving multiple substances in the United States typically occur among people ages 25-54. However, a new study led by Boston University School of Public ...

Polysubstance use has become a defining feature of the U.S. overdose crisis in the past decade. While not every overdose involves multiple substances, a significant and growing proportion includes ...