In other words, what is the drug where the least amount of it can kill you compared to other illegal drugs? The one that is the most fatal, most concentrated, and most dangerous to deal with? And I don't mean compared to widespread use, just what is the drug that can kill the fastest and you have to use the least of. If you don't get what I'm trying to say just post a question and I'll elaborate more.

And it's probably not meth or heroin or anything like that, because if it was I don't think they would be so readily available, you know?