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Medical disclaimer

Please read this before acting on anything you find on this site.

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Information, not medical advice

Everything on NaltrexoneReviews.com is general information and education. It is not medical advice, diagnosis, or treatment, and it doesn't replace the judgment of a licensed clinician who knows your history. Reading this site doesn't create a clinician–patient relationship with us or with anyone affiliated with us.

Don't start or stop medicine based on this site

Don't start, stop, or change the dose of naltrexone — or any medicine — without talking to your prescriber. Stopping drinking can be risky too: after frequent drinking, stopping can cause alcohol withdrawal, which can quickly become life-threatening (MedlinePlus). A clinician can help you plan safely.

Opioid warning

According to naltrexone's FDA label (naltrexone tablet prescribing information):

  • It must not be used by people taking opioid pain medicines, people currently dependent on opioids (including methadone or buprenorphine), or people in opioid withdrawal.
  • In people who are dependent on opioids it can bring on opioid withdrawal, in some cases severe enough to need hospital care.
  • If opioid pain relief is needed in an emergency, more opioid than usual may be needed, and breathing can be suppressed more deeply and for longer.
  • After naltrexone wears off, people may respond to lower doses of opioids than before, and fatal overdoses have been reported after treatment stopped.

Tell every clinician who treats you that you take naltrexone.

Emergencies and crisis support

Emergency and crisis contacts

  • Emergency: call 911 or your local emergency number.
  • 988 Suicide & Crisis Lifeline: call or text 988 — free, confidential, 24/7 (988lifeline.org).
  • SAMHSA's National Helpline: free, confidential, 24/7 treatment referral and information, in English and Spanish — 1-800-662-HELP (4357) (samhsa.gov).
  • Stopping drinking: after frequent drinking, stopping can cause alcohol withdrawal, which can become life-threatening. Talk to a clinician before you stop (MedlinePlus).

Accuracy and currency

We work from primary sources and show when each page was last updated, but medicine changes and errors are possible. If anything here conflicts with your prescriber, the FDA label, or current guidelines, trust those, and please tell us so we can fix it.