Increasing use: Ecstasy is an amphetamine derivative used for its psyc
hostimulating properties. Use has followed a mode coming from English-
speaking countries. In France the progression has persisted since 1987
as evidenced indirectly by the increasing number of calls to the anti
-poison centers in Paris for undesirable effects following use of ecst
asy. These calls come from a young adult population, 78 % being under
26 years of age. For 39 % of the calls, ecstasy was taken with other t
oxic agents: narcotics, alcohol and benzodiazepines. Minor and serious
adverse effects: Minor side effects are expected and usually tolerate
d by users. Serious adverse effects can be fatal even without an overd
ose. Deaths have been reported after single dose intake or at doses be
low 150 mg. Multiple consequences: Serious adverse effects preferentia
lly affect the central nervous system, the cardiovascular system tem a
nd metabolism. Cardiac dysrhythmia is the main cause of death. Some pa
tients have died Within a few hours due to malignant hyperthermia. The
circumstances surrounding ecstasy use at 'rave' parties plays a role
in the development of these disorders. Seizures, collapsus, coagulopat
hy and acute renal failure as well as fulminant hepatitis have all bee
n reported as causes of death due to ecstasy. No antidote: The best ma
nagement of acute side effects after ecstasy use is not perfectly esta
blished but basically relies on symptomatic treatment.