A medication that blocks opioid receptors. It can be used to treat opioid or alcohol use disorders to reduce cravings or prevent the “high.”
In the context of addiction treatment:
Comes in oral form and as a long-acting injection (Vivitrol®).
What to know:
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People must be opioid-free for a period before starting naltrexone to avoid precipitated withdrawal.
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For alcohol use disorder, naltrexone can help reduce heavy drinking days.