It is also used in an experimental treatment to bring about rapid withdrawal from opioids. Naltrexone has also been used as a treatment to support abstinence for people who are dependent on alcohol . This information explains the use of naltrexone to assist people in maintaining abstinence from heroin use.
Naltrexone is classed as an opioid antagonist .
It works by blocking the opioid receptors in the brain and therefore blocking the effects of heroin and other opioids. It can assist in maintaining abstinence from heroin because the person is aware that they cannot achieve a 'high' from using heroin. Therefore, any money spent on heroin will be wasted. It does not directly stop a person wanting to use heroin, although it may reduce or prevent cravings in some people. You cannot become physically dependent on naltrexone and it does not produce any euphoric effects itself.