What Is the Difference Between Naltrexone and Buprenorphine?

When exploring treatment options for opioid or alcohol use disorders, medications can play a powerful role in supporting long-term recovery. Two commonly prescribed medications are naltrexone and buprenorphine. While both are evidence-based and effective, they work in very different ways and are used for different treatment goals.

At Victory Recovery Partners, we believe that understanding your treatment options is an important part of recovery. If you or a loved one is considering medication-assisted treatment (MAT), learning the difference between naltrexone vs. buprenorphine can help you make an informed decision alongside your care team.

 

Understanding Medication-Assisted Treatment (MAT)

Medication-assisted treatment combines FDA-approved medications with counseling and behavioral therapies to treat substance use disorders. MAT is widely recognized as one of the most effective approaches for treating opioid use disorder (OUD) and alcohol use disorder (AUD).

Both naltrexone and buprenorphine are commonly used in MAT, but they serve different purposes, affect the brain differently, and are appropriate for different stages of recovery.

 

What Is Naltrexone?

Naltrexone is an opioid antagonist, meaning it blocks opioid receptors in the brain.

How Naltrexone Works

Naltrexone binds to opioid receptors without activating them. This prevents opioids and alcohol from producing pleasurable or reinforcing effects. As a result:

  • Opioids do not cause euphoria or pain relief
  • Alcohol cravings and rewarding effects are reduced
  • The risk of relapse is lowered because using substances no longer produces the desired effect

Unlike some other MAT medications, naltrexone is not addictive and does not cause physical dependence.

What Naltrexone Is Used For

Naltrexone is approved to treat:

  • Opioid use disorder
  • Alcohol use disorder

It is often recommended for individuals who have already completed detox and want support staying substance-free.

Forms of Naltrexone

Naltrexone is available in two forms:

  • Oral naltrexone (daily tablet)
  • Extended-release injectable naltrexone (Vivitrol®), given once per month

 

What Is Buprenorphine?

Buprenorphine is a partial opioid agonist, meaning it partially activates opioid receptors — but to a much lesser degree than full opioids like heroin or oxycodone.

How Buprenorphine Works

Buprenorphine helps by:

  • Reducing opioid cravings
  • Preventing withdrawal symptoms
  • Producing a “ceiling effect,” which lowers the risk of overdose
  • Blocking other opioids from attaching to receptors

Because it partially activates opioid receptors, buprenorphine provides stability without creating the intense euphoria associated with misuse.

What Buprenorphine Is Used For

Buprenorphine is approved to treat:

  • Opioid use disorder only

It is not used for alcohol use disorder.

Forms of Buprenorphine

Buprenorphine is commonly prescribed as:

  • Suboxone® (buprenorphine + naloxone)
  • Subutex® (buprenorphine alone)
  • Long-acting injections or implants in some cases

 

Key Differences Between Naltrexone and Buprenorphine

While both medications support recovery, their differences are important when determining the right treatment plan.

How They Affect Opioid Receptors

  • Naltrexone blocks opioid receptors completely
  • Buprenorphine partially activates opioid receptors

This distinction makes naltrexone best for people who want complete opioid abstinence, while buprenorphine helps stabilize individuals earlier in recovery.

Risk of Dependence

  • Naltrexone is non-addictive and does not cause dependence
  • Buprenorphine can cause physical dependence, though it is significantly safer than full opioids

Buprenorphine dependence is medically managed and often part of a structured treatment plan.

Detox Requirements

  • Naltrexone requires full detox (7–10 days opioid-free) before starting
  • Buprenorphine can be started earlier and is often used to ease withdrawal

This makes buprenorphine more accessible for individuals who are not yet fully detoxed.

Withdrawal Symptoms

  • Naltrexone does not relieve withdrawal symptoms
  • Buprenorphine actively reduces withdrawal discomfort

For many people early in recovery, withdrawal relief is a critical factor.

Treatment Goals

  • Naltrexone is often chosen for relapse prevention after detox
  • Buprenorphine is often chosen for stabilization and harm reduction

Neither approach is “better”, the right choice depends on the individual.

 

Which Medication Is Right for You?

Choosing between naltrexone and buprenorphine depends on several factors, including:

  • Substance use history
  • Length and severity of addiction
  • Whether detox has been completed
  • Risk of relapse
  • Personal recovery goals
  • Medical and mental health considerations

At Victory Recovery Partners, our clinical team conducts comprehensive assessments to determine which medication is appropriate as part of your personalized treatment plan.

 

Naltrexone vs. Buprenorphine in Recovery Programs

Both medications are most effective when combined with:

  • Individual therapy
  • Group counseling
  • Relapse prevention planning
  • Mental health support
  • Long-term aftercare

Medication alone is not a cure for addiction but when integrated into a structured recovery program, it can significantly improve outcomes.

Victory Recovery Partners offers medication-assisted treatment within a comprehensive behavioral health framework, ensuring that each client receives support for both the physical and psychological aspects of addiction.

 

Addressing Common Myths

“Buprenorphine is just replacing one drug with another”

This is a common misconception. Buprenorphine is a medically supervised treatment that reduces harm, stabilizes brain chemistry, and lowers overdose risk. Research consistently shows it saves lives.

“Naltrexone works for everyone”

While effective for many, naltrexone requires full detox and strong motivation. It may not be the best fit for individuals early in withdrawal or at high relapse risk.

 

The Importance of Professional Guidance

Deciding between naltrexone and buprenorphine should never be a self-directed choice. Each medication has specific medical considerations, risks, and benefits.

At Victory Recovery Partners, our experienced clinicians help clients understand:

  • How each medication works
  • What to expect physically and emotionally
  • How MAT fits into long-term recovery
  • When medication adjustments are needed

Our goal is not just sobriety but sustainable wellness and quality of life.

 

Start Your Recovery with Confidence

If you or a loved one is considering medication-assisted treatment, understanding the difference between naltrexone and buprenorphine is an important first step. Both medications can be life-changing when used appropriately and supported by therapy, structure, and compassionate care.

Victory Recovery Partners offers individualized treatment plans that include MAT, behavioral therapy, and ongoing recovery support all designed to meet you where you are and help you move forward.

Contact us today to learn more about your treatment options and take the next step toward lasting recovery.