I'm allergic to THC, i wonder if it has this in it. First time I experimented, and consequently my last, for good reason I ended up with my first trip to an ER. Went into tachycardia and was legally dead for a few minutes. Evidently that allergy is pretty rare though. My mom was working at the hospital that night and had i not been seriously dead.... well i imagine she prolly would have killed me herself.
Seems like more and more "street" drugs are being experimented with in clinical studies these days, like the ecstasy given to soldiers with post traumatic stress syndrome.