Why do they lace heroin with fentanyl?

I am using the fentanyl and heroin as an example.

Dealers are mixing deadly substances in all street drugs including cocaine, pot and meth. But I think it’s odd to lace things with substances that kill. I can’t figure out what they get out of it.

From a purely practical point of view, these dealers are killing their customers. So why would they do that? Do they feel they have so many that it doesn’t matter? Does adding the substances add so much allure that those who suffer addiction think it’s worth the risk if they can feel that euphoric … Read more...