a substance used by teenagers and young adults at bars, dance clubs, or all-night parties known as
raves. Club drugs include
MDMA (Ecstasy);
GHB,
flunitrazepam, and
ketamine (see also
date-rape drug);
methamphetamine; and
LSD. Chronic abuse can have severe physiological or psychological repercussions (or both) and, when combined with the intake of alcohol, might also prove fatal.