Detox Guide
Polysubstance Detox: When More Than One Substance Is Involved
Most people entering detox in 2026 use more than one substance. Polysubstance care requires a facility with 24/7 medical coverage and cross-trained clinicians.
Updated February 2026 · Reviewed by Dr. Julianne Rivers, MD (Addiction Medicine)
The most common combinations in NJ
- Alcohol + benzodiazepines (highest withdrawal risk)
- Opioids + benzodiazepines or gabapentin
- Fentanyl + xylazine (“tranq”) — now common in the tri-state area
- Stimulants + opioids (“speedball”)
Why inpatient is nearly always the right level
Cross-tolerance and cross-withdrawal make outpatient management unsafe for most polysubstance cases. Xylazine-adulterated fentanyl in particular can produce open wounds and prolonged sedation that require wound care alongside opioid stabilization.
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