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Glossary

Naltrexone

Also known as: Vivitrol, low-dose naltrexone (LDN)

Medically reviewed, last updated

Naltrexone is an opioid-receptor antagonist used to treat alcohol use disorder and opioid use disorder. Available as daily oral (50 mg) or monthly injection (Vivitrol). Reduces alcohol cravings and prevents opioid effects if a patient uses opioids while on naltrexone.

For Black patients with substance use disorders, naltrexone is one of three FDA-approved medication-assisted-treatment options for alcohol (alongside acamprosate and disulfiram) and one of three for opioid use disorder (alongside buprenorphine and methadone). Black MAT-access rates lag white rates substantially.

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Medical Disclaimer

This glossary entry is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition.