Polysubstance Use: The Exception or the Rule?-View Presentation Slides

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This presentation reviewed polysubstance use as a major and increasingly common clinical problem, especially when substance use becomes disordered. Polysubstance use was defined as taking two or more drugs together or within a short period, either intentionally or unintentionally, with risks of stronger, less predictable, and potentially fatal effects. The talk emphasized that while mono-use may be common in the general population, polysubstance use becomes the rule among people with substance use disorders or treatment needs.<br /><br />Key data showed rising involvement of fentanyl with stimulants in overdose deaths, reflecting a growing and dangerous opioid-stimulant combination. The presentation also highlighted severe risks from combining opioids with alcohol, benzodiazepines, gabapentin/pregabalin, and other depressants, as well as harms from alcohol combined with cocaine or methamphetamine.<br /><br />The talk explored vulnerabilities across the lifespan. Prenatal polysubstance exposure was linked to developmental, cognitive, behavioral, and ADHD-related problems, while early alcohol use in adolescence increased risk for later polysubstance use and overdose. Mental health and trauma were also strongly associated with polysubstance use, including depression, anxiety, bipolar disorder, psychosis, sexual assault history, and suicidal ideation. Youth and veterans were identified as especially high-risk groups.<br /><br />Assessment should include thorough screening for all substances, not just a “primary” drug, because co-use changes overdose risk and treatment planning. Treatment recommendations included motivational engagement, trauma-informed care, integrated mental health treatment, stigma reduction, prenatal screening, and broader community naloxone access. The presentation also noted emerging treatment signals for GLP-1 medications and some evidence for disulfiram in cocaine use disorder. Overall, the message was that clinicians must look beyond single-substance models and address the full pattern of substance use to improve safety and outcomes.

Keywords

polysubstance use

overdose risk

fentanyl

opioid-stimulant combination

alcohol and benzodiazepines

prenatal exposure

adolescent alcohol use

mental health comorbidity

trauma-informed care

naloxone access