I hear thinigs like LSD is "cut" with rat poison (Strychnine), although I also hear that that is a myth, my friend who is an absolute acid head says otherwise. Even if it doesn't have rat poision, isn't it mixed with a hole bunch of other stuff?
I would try pure LSD in a hearbeat, I'm just wary as to what it is could also be in the blotter I'm consuming. LSD itself is virtually non-toxic.