This might sound crazy but I think it might be the Cocaine. But in all seriousness if you're experiencing something different than the usual residual stimulation, anxiety, paranoia, racing heart and sweating etc. that a long crack smoking session causes, maybe theres some sort of cathinone or pyro in it?
There is no real way to know unless you test it, which I would recommend you do if you want to know what you're smoking.
Those effects are normal for some people especially if they have had a long smoking session or smoked a lot in a short period. I think you're probably just experiencing that. If you've never experienced it before maybe it is just starting to hit you now. If you have experienced it before and it is different or more intense than before like I said, then there could be something else in it and I would suggest testing it.
PS; sometimes it can help if you write down everything about it, if its a new dealer, new batch, the colour, taste, smell, density, how it smokes etc it can maybe help you find some things out but it won't be anywhere near as efficient as testing which is the only way to be certain of what it contains or may contain.
