Naltrexone is used in the treatment of opioid dependence and alcohol addiction.
How Naltrexone works Naltrexone is an opioid antagonist that blocks the euphoric feelings (highs) associated with the use of opiates and alcohol. This action reduces cravings and assists individuals in maintaining abstinence from these substances.
Common side effects of Naltrexone include joint pain, muscle pain, insomnia (difficulty sleeping), headache, nausea, nervousness, and abdominal cramps.