Polydrug abuse
The use of several drugs either in succession or at one time to achieve a certain effect; most drug abusers are polydrug abusers.
I just wasn't getting the high I wanted from the weedso I laced it with coke. Dude,you're a polydrug abuser! Right on!
polydrug
Polydrug use is the technical term for a cocktail or combination of more than one drug being consumed
" Mr. Jeff is in rehab for the abuse of polydrug use"