Naltrexone (Vivitrol)

Naltrexone is available in tablet and injection form.  It is indicated for alcohol use disorder and opioid use disorder.

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Naltrexone is an opioid antagonist.  It blocks opioid receptors, preventing opioid drugs like heroin, hydrocodone, oxycodone, and fentanyl from working.  It also has an indirect effect on reducing cravings for other substances, especially alcohol.

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Vivitrol is a once monthly injection of naltrexone.  This product helps patients be more consistent with their treatment by eliminating the need for daily pills.