Interesting drug for horses. The little I know about it started by reading Hunter S Thompson, where he refers to it as an extrememly potent hallucinogenic, I think:
http://news.bloodhorse.com/article/48439.htm
From Wiki:
http://en.wikipedia.org/wiki/Scopolamine
Jimson Weed from erowid.org:
http://www.erowid.org/chemicals/scop...polamine.shtml