It crystalizes in your lungs, but that's not the problem, that's what it's supposed to do. It's more dangerous because there's a rush when you smoke (or shoot) that you don't get snorting, so people end up doing more and more to get the rush. It's stonger that way, and yet you do more. But 3/4 of a gram in 45 minutes? That's alot, however you do it. The comedown is a bitch, not as bad as coke, but it lasts alot longer. You really get into trouble when you get the bright idea that you can make the shit.