GHB: Known in Europe as Gamma-OH, this is gamma hydroxybutyrate, a colorless and odorless drug used illicitly for 'recreational' purposes and for 'date rape.' GBH is a central nervous system depressant. It tends therefore to increase sociability and function as something of a transient antidepressant. Some persons who have sustained adverse effects... Found on http://www.medterms.com/script/main/art.asp?articlekey=13859