Most people who seek help for alcohol use disorder don’t know that FDA-approved Medication-Assisted Treatment for Alcohol medications exist specifically for it. Not methadone. Not anything that creates a new dependence. Medications that reduce cravings, block the rewarding effects of alcohol, or make drinking physically unpleasant – and that have decades of clinical evidence behind them.
MAT for alcohol is one of the most underused tools in addiction treatment. The reasons are partly stigma, partly the fact that not all programs offer it, and partly that nobody explained it. This page does that.
What Medication-Assisted Treatment for Alcohol Actually Is
Medication-assisted treatment (MAT) for alcohol use disorder means using FDA-approved medications as part of a comprehensive treatment plan – alongside therapy, not instead of it. The medications target different mechanisms: some reduce the craving for alcohol, some block the brain’s reward response to drinking, and some create an aversive reaction to alcohol that functions as a deterrent.
What MAT is not:
- It is not replacing one addiction with another. None of the three primary medications for alcohol use disorder are addictive or create physical dependence.
- It is not a shortcut that replaces therapy or clinical support. The evidence base for MAT consistently shows it works best as part of a comprehensive program, not as a standalone intervention.
- It is not the same as MAT for opioids. The medications are different, the mechanisms are different, and the clinical picture is different. Naltrexone is used in both contexts, but differently.
The Three FDA-Approved Medications for Alcohol Use Disorder
Naltrexone (Oral and Injectable)
Naltrexone blocks opioid receptors in the brain – the same receptors that alcohol activates to produce its pleasurable effects. When those receptors are blocked, drinking doesn’t produce the same reward. The craving for that reward weakens over time.
Naltrexone is available in two forms:
Oral naltrexone (ReVia, Depade) is taken daily as a tablet. It’s effective when taken consistently, but daily adherence is a real-world challenge. If someone drinks while taking oral naltrexone, the blocking effect is immediate – but only if they’ve actually taken the medication.
Injectable naltrexone (Vivitrol) is a once-monthly injection that eliminates the adherence problem. Once administered, the medication is active for 30 days regardless of what the person does. For people who are committed to recovery but worry about impulse decisions on difficult days, Vivitrol removes that variable. It’s one of the most clinically significant advances in alcohol use disorder treatment in the last two decades.
Who naltrexone is for: people who have completed detox and are motivated to stop drinking. It is contraindicated for people who are still using opioids (it will precipitate immediate withdrawal) and for people with significant liver disease.
Acamprosate (Campral)
Acamprosate works differently from naltrexone. Rather than blocking the reward of drinking, it addresses the neurological imbalance that alcohol creates in the brain’s GABA and glutamate systems – the same systems involved in withdrawal and post-acute withdrawal syndrome.
People taking acamprosate sometimes describe its effects as “quieting the noise.” It may ease the anxiety, restlessness, and emotional discomfort that often accompany early recovery. These symptoms can trigger the urge to drink for relief rather than pleasure. Acamprosate may help people who struggle with these urges, while naltrexone works differently by reducing alcohol’s rewarding effects.
People typically take acamprosate three times a day after they stop drinking. It helps maintain abstinence but does not treat alcohol withdrawal or replace medical detox. Unlike naltrexone, acamprosate does not rely on the liver for metabolism. This makes it a potential option for people with liver disease, although kidney function also affects its suitability.
Disulfiram (Antabuse)
Disulfiram takes a different approach entirely. It doesn’t reduce cravings or block rewards. It inhibits the enzyme the body uses to metabolize alcohol, so if someone drinks while taking it, acetaldehyde (a toxic metabolite) accumulates rapidly, causing flushing, nausea, vomiting, rapid heart rate, and severe discomfort. The reaction is aversive enough that most people on disulfiram simply don’t drink – not because they don’t want to, but because the consequences are immediate and unavoidable.
Disulfiram works as a deterrent mechanism. Its effectiveness depends on consistent adherence – which is why supervised administration (a spouse, a clinician, a pharmacy program) improves outcomes significantly compared to self-administration. Someone who wants to drink can simply stop taking disulfiram and wait a few days for it to clear.
Who disulfiram is for: people who are highly motivated to abstain, who have a reliable support person to supervise administration, and who benefit from an external accountability mechanism. It’s less appropriate for people with cardiovascular disease, significant liver disease, or anyone who might drink impulsively without accounting for the consequences.
Does MAT Work? What the Evidence Actually Says
Yes. The clinical evidence for naltrexone and acamprosate is strong and consistent across multiple large randomized controlled trials. A 2014 Cochrane review found naltrexone significantly reduced heavy drinking days and return to any drinking. Acamprosate showed similar efficacy, particularly for maintaining abstinence after detox.
The Combine Study – one of the largest alcohol treatment trials ever conducted – found that naltrexone combined with behavioral therapy produced the best outcomes of any treatment condition studied. MAT doesn’t replace therapy. It makes therapy work better.
Disulfiram has a more mixed evidence base because its effectiveness depends heavily on adherence. Supervised disulfiram outperforms unsupervised disulfiram significantly – which underscores that the medication works when it’s actually taken.
How MAT Fits Into a Full Treatment Program
MAT is most effective when it’s integrated into a comprehensive treatment program rather than prescribed in isolation. The medication addresses the neurochemical component of alcohol use disorder. Therapy addresses the behavioral, emotional, and psychological components. Neither is sufficient alone for most people.
At Purposes Recovery, MAT is part of the clinical conversation from intake. Our medical team discusses medication options with every client, presents the evidence clearly, and supports whatever choice the client makes – without stigmatizing any option. For people who would benefit from naltrexone or acamprosate, we initiate and manage that treatment as part of the residential program, so clients leave with a medication plan in place and a prescribing physician who knows their history.
For more on how MAT fits into the broader treatment picture, see our guide to levels of care for alcohol treatment and our alcohol addiction treatment page.
Frequently Asked Questions
Is medication-assisted treatment just replacing one addiction with another?
No. Naltrexone, acamprosate, and disulfiram do not cause addiction or physical dependence. They help treat alcohol use disorder without substituting another addictive substance.
These medications work in different ways. Naltrexone reduces alcohol’s rewarding effects and can help decrease cravings. Acamprosate helps people maintain abstinence, while disulfiram causes unpleasant reactions if they drink alcohol.
Methadone and buprenorphine treat opioid use disorder differently. They act on opioid receptors and can cause physical dependence. However, physical dependence does not automatically mean addiction. Both medications can reduce withdrawal symptoms, cravings, and the risk of overdose.
Do I have to take medication to receive treatment at Purposes Recovery?
No. Purposes Recovery offers medication-assisted treatment, but you do not have to take medication to participate.
Your medical team will explain your options and discuss how medication might support your recovery. Together, you can choose an approach that fits your clinical needs, treatment goals, and personal preferences.
How long do you take medication for alcohol use disorder?
Treatment length depends on the medication, your progress, and your individual needs.
Many people take naltrexone for three to six months or longer. Some continue acamprosate for a year or more. Your medical team will monitor your progress and help determine how long medication may benefit you.
Is MAT covered by insurance?
Yes, in most cases. All three medications are FDA-approved, and most major commercial insurance plans cover them. Vivitrol (injectable naltrexone) has slightly more variable coverage than oral naltrexone. Verify your insurance online or call us at (888) 482-0717 for specifics.
Can I drink while on naltrexone?
Technically yes, but the reward response is blocked. Some people on naltrexone find that drinking becomes unrewarding enough that they stop naturally – this is the basis of the Sinclair Method, a harm-reduction approach. At Purposes Recovery, our program is abstinence-based, and naltrexone is used in that context rather than as a harm-reduction tool.
What’s the difference between naltrexone and acamprosate?
Naltrexone blocks the reward of drinking and reduces craving for the pleasurable effects of alcohol. Acamprosate reduces the neurological discomfort of early sobriety – the anxiety, restlessness, and dysphoria that drive drinking for relief rather than reward. Many clinicians consider them complementary for different presentations. Your medical team can help determine which is more appropriate based on your specific pattern of use.
If you’d like to talk through whether MAT might be part of your treatment plan, call us at (888) 482-0717. Our medical team is available to answer questions before you commit to anything. You can also verify your insurance or reach us online.