If it was laced then the heroin probably didn't do much, if you can find out what it was laced with and do a google search.

More to the point of your question on what does heroin hit... Heroin is like the opposite of cocaine, heroin slows down the bodys functions.

Thats pretty much all I can think of.

PS: Sorry about your loss.
DataMatrix Reviewed by DataMatrix on . Heroin OD. So, I've gotten a lot of shit about this, but, heres the story: My boyfriend passed away last month of what was said to be a "heroin OD", and I've had a lot of people say that the shit can't kill ya. (Well, ya fuckers coulda prooved me wrong). I've heard that snorting H gives ya a pretty big risk, and that's what he'd done. Further investigations are leading up rumors that the shit was laced, but I stick with blunts and bowls so I'm not real big on the harder drugs, so sorry if this is Rating: 5