Naltrexone Overview

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Naltrexone Treatment

Naltrexone blocks the effects of opioid medication, including pain relief or feelings of well-being that can lead to opioid abuse. An opioid is sometimes called a narcotic. Naltrexone is used as part of a treatment program for drug or alcohol dependence. Naltrexone is used to prevent relapse in people who became dependent on opioid medicine and then stopped using it. Naltrexone can help reduce feeling a "need" to use the opioid. Naltrexone is also used to treat alchocholism by reducing one's urge to drink alcohol.
You should not receive Naltrexone if you are having drug or alcohol withdrawal symptoms, if you have taken any opioid medicine within the past 2 weeks, or if you are still actively drinking alcohol.

Before Receiving Naltrexone

You should not receive naltrexone if you still use opioid medicine, or you could have sudden and severe withdrawal symptoms. You should not use naltrexone if you are allergic to it, or if:


You are having withdrawal symptoms from drug or alcohol addiction


You have used any opioid medicine within the past 10 days (including fentanyl, Vicodin, OxyContin, and many others)


You have used methadone or buprenorphine (Subutex, Butrans, Suboxone, Zubsolv) in the past 14 days.

Safety Precaution

To make sure naltrexone is safe for you, tell your doctor if you have:


Liver disease.


Kidney disease.


A bleeding or blood-clotting disorder such as hemophilia.


It is not known whether Naltrexone will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant. Naltrexone can pass into breast milk and may harm a nursing baby. You should not breast-feed while using this medicine.


Information on this page is provided by


Additional resources in the context of Addictive Disorders. See also Resources from main navigation bar.

Treating & Preventing Opioid Overdose:

Women and Family Life Center:

Narcan: How to get it:

CVS Pharmacy (Down the Street: 613 Boston Post Rd, Madison) Obtain Narcan and How to Use it:

How to use various forms of Naloxone (Narcan):

WVU Naloxone First Aid Video:

DMHSA Crisis Services:

If you are a prospective client of WCC, we invite you to immediately start the process of receiving compassionate clinical care by calling us right now, or start the new patient intake process with our secure online PATIENT INTAKE form. If you are an existing member of the WCC community, you may MAKE AN APPOINTMENT now by visiting the link to our clinical patient portal.

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Service Region

Waterstone Counseling Centers serve New London, New Haven and Middlesex Counties, Connecticut. The medication component of our MAT program requires a regional service area, however, our unique Integrated Psychotherapy services are available to a non-local community through telehealth solutions and our interactive education platform.