I'm suddenly allergic to caffeine apparently, and i'm wondering if smoking the herb might have something to do with it. I know i wasn't allergic to it before, because way back before i used to smoke, i almost never used caffeine for anything, because i'm always tired anyways and didn't want to end up relying on it. However i did use it a few times and everything was all good, i got that little energy boost just like everyone else. Well i've had to use it to pull a few all nighters to get shit done, and every time i use it i have trouble breathing, and the fact that i'm trippin out from lack of sleep makes it worse. Not life threatening or anything, just uncomfortable.