Seattle's alt.weekly The Stranger sent one of its editors to the Annual Conference of the American Academy of Forensic Sciences, and in his write-up of the event, he made a point of noting:
Levamisole, an agricultural de-worming agent, is getting harder and harder to find in the U.S. (even for forensic scientists) as chemical companies take it off the shelves to keep it out of cocaine.
I guess we're headed back to our regular old garden variety cocaine adulterants!
Whew...