Naltrexone Breaks the Cycle of Addiction New hope for alcohol dependence and opiate drug addiction. Naltrexone is one of the first anti-craving medications approved by the US Food and Drug Administration (FDA) for use in the treatment of alcoholism and opiate addiction. Naltrexone comes in two forms: 1) Vivirol®-an injectable time released form of naltrexone that is taken once a month.
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