(Naltrexone Hydrochloride), an opioid antagonist, is a synthetic congener of oxymorphone with no opioid agonist properties.
Naltrexone is used to help people who have alcohol addiction keep their condition in remission.
Naltrexone is used after the patient has stopped taking alcohol.
It blocks brain opiate receptors, attenuates euphoria associated with alcohol use, makes alcohol use less rewarding, and reduces craving.
Naltrexone comes as a tablet to take by mouth, or by monthly extended-release formulation injections.