Heroin dealers are mixing in fentanyl because it’s extremely dense (in terms of doses per mass) and therefore easy to smuggle. People are ODing on fentanyl beca

Heroin dealers are mixing in fentanyl because it’s extremely dense (in terms of doses per mass) and therefore easy to smuggle. People are ODing on fentanyl because those same properties make it hard to dose accurately. None of this would happen if opioids were legal.