Addiction Care · 3 min read · Updated November 13, 2026
Extended-release injectable naltrexone is one medication option for opioid use disorder. It blocks opioid receptors rather than acting like methadone or buprenorphine. Choosing it requires a clinician’s assessment and a safe starting plan, including attention to recent opioid exposure. It should not be selected simply because someone considers it a more acceptable form of recovery.
Compare options without a hierarchy of worth
CDC identifies buprenorphine, methadone, and naltrexone as approved opioid-use-disorder medications. They have different practical and clinical considerations. Ask which options fit your health, history, preferences, and access to follow-up rather than assuming everyone should receive the same treatment.
Our guide to opioid-use-disorder medications provides a starting point. Explain previous treatment experiences and what made them workable or difficult. A medication choice should reflect a shared clinical decision, not pressure to prove you are committed enough.
Make initiation a supervised planning decision
SAMHSA explains important precautions before naltrexone treatment. Starting while opioids remain in the body can trigger severe withdrawal. A prescriber must determine an appropriate opioid-free interval and assessment; do not follow a generic waiting period or rely on feeling normal.
Disclose all opioid use, including pain medicines, methadone, buprenorphine, and products of uncertain contents. Ask how withdrawal and cravings will be supported before treatment starts, where assessment happens, and whom to contact if the plan becomes difficult. A gap without support deserves attention before it becomes an emergency.
Discuss pain care and medical identification
Naltrexone can affect how opioid pain medicines work. Tell the clinician about planned procedures, chronic pain, and other conditions. Ask how to inform dentists, emergency departments, and other prescribers that you receive it. Our guide to pain care during opioid recovery can help frame these questions.
Review liver history, pregnancy or breastfeeding, allergies, and other medicines. Ask which symptoms need an urgent call and how side effects will be monitored. Do not attempt to overcome the blocking effect by taking more opioids; that can cause a life-threatening overdose.
Plan for missed appointments and transitions
Reduced opioid tolerance can increase danger after a period without opioid use or when treatment is interrupted. Review overdose risk after abstinence and arrange naloxone access. Ask what to do if an injection appointment is missed or you want to change treatment.
Before leaving, confirm the next appointment, coverage, transportation, and a contact for concerns. Keep follow-up open about cravings and any opioid use. A change in treatment needs a coordinated plan, not a silent stop followed by managing risk on your own.
Sources & further reading
General educational information. This guide is not a substitute for advice from a qualified treatment professional.
