don't know about the belladonna, think it's a similar drug that causes you to wind up with lots of extra dopamine floating around in you brain-pan housing group. Similar to Dautra/Jimson weed, and, in point of fact, simliar to the brain chemistry of schizophrenics, from what I've read.
Most of my little group tried it for a while, and then realized we weren't really getting high, just...losing our minds. Spot on about not really being "fun".