polydrug

[pol-ee-druhg]
adjective
  1. being or pertaining to several drug used simultaneously, especially narcotics or addictive drugs: a center for dealing with polydrug abuse.

Origin of polydrug

First recorded in 1970–75; poly- + drug1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018