Opioid intoxication is one of the most common causes of drug-related e
mergency department visits in the developed world. Successful treatmen
t requires the timely recognition of intoxication, early airway interv
ention and the judicious use of an antidote (usually naloxone), when a
ppropriate. During the last decade, naloxone treatment strategies have
undergone substantial evolution. This has resulted largely from the r
ecognition that the treatment of the opioid intoxicated patient must d
iffer from that of the patient recovering from physician-controlled an
aesthesia in the operating roam or procedure suite. The use of standar
d administration of naloxone by paramedics in the field-or physicians
in the emergency department is often either ineffective or produces un
wanted opioid withdrawal in opioid-tolerant patients. Also, in the set
ting of polysubstance overdose or trauma, the use of naloxone may have
deleterious effects. Current management strategies emphasise the need
for individualised therapy for opioid-intoxicated patients.