Naltrexone is used to maintain abstinence following opioid withdrawal in addicts.It blocks all of the following features of opioid use, except:
Naltrexone, is a medication primarily used to manage alcohol or opioid dependence. An opioid-dependent person should not receive naltrexone before detoxification. It is taken by mouth or by injection into a muscle. Effects begin within 30 minutes. Ref: KD tripathi 8th ed.
Euphoriant effects of opioids
Craving for opioids
Miosis
Respiratory depression
Central Nervous system