A drug that opposes the action of opioids (such as heroin) and is used to help maintain a drug-free habit in
people who were formerly dependent on opioids, Naltrexone is usually started after the individual has abstained from taking opioid drugs for at least 7-10 days. It is available as tablets on prescription only.
Side effects: include nausea, vomiting, abdominal pain, anxiety, nervousness, difficulties in sleeping, headache, reduced energy, and joint and muscle pain. Less frequently there may be mood changes and decreased potency.
Precautions: naltrexone should not be taken by people who are still dependent on opioids or by those with severe liver disease.
Proprietary preparation: Nalorex.
