Medication for Alcohol Cravings: Naltrexone, Acamprosate, and More

Why medications for alcohol cravings are underused

Alcohol use disorder is a medical condition, not a willpower problem. Long-term heavy drinking changes the brain systems that handle reward, stress, and habit, which is why cravings can feel relentless even when someone desperately wants to stop. The National Institute on Alcohol Abuse and Alcoholism (NIAAA) describes medication as a core part of evidence-based treatment, alongside counseling and support.

Yet research published in JAMA has found that fewer than 2 percent of Americans with alcohol use disorder ever receive one of the approved medications. Many people simply never hear that these options exist, and many doctors do not routinely offer them. If willpower alone has not worked for you, that is not a personal failure. It may mean your brain needs the same kind of medical support any other chronic condition would get.

Naltrexone: making alcohol less rewarding

Naltrexone blocks opioid receptors in the brain, which blunts the pleasurable buzz alcohol normally produces. When drinking stops feeling rewarding, the urge to keep drinking tends to fade. It comes as a daily 50 mg tablet or a monthly injection (Vivitrol), which helps people who struggle to remember a daily pill.

Studies reviewed by the NIAAA show naltrexone reduces heavy drinking days and helps people who slip return to abstinence faster. One practical advantage: it can usually be started while you are still drinking, so it is often the first option doctors reach for.

Who it suits

• People who want to cut down or stop entirely
• People who drink for the buzz or to unwind at night
• People who prefer a monthly injection over a daily pill
• People not currently using opioids (naltrexone blocks them and can trigger withdrawal)

Common side effects

Nausea, headache, and tiredness are the most common, usually easing within the first couple of weeks. Naltrexone is processed by the liver, so your doctor will check liver health first. It is not addictive and does not cause a high.

Acamprosate: steadying the brain after quitting

Acamprosate (Campral) works differently. After someone stops drinking, the brain can stay stuck in an overexcited, anxious state for weeks or months, which fuels cravings. Acamprosate helps rebalance glutamate and GABA activity, easing that lingering restlessness, poor sleep, and edginess.

It is taken as two tablets three times a day, which is the main drawback: remembering three daily doses takes commitment. It works best for people who have already stopped drinking and want to stay stopped. Because it leaves the body through the kidneys rather than the liver, it is a good option for people with liver problems.

• Best for: people who have stopped drinking and want help staying stopped
• Dosing: two 333 mg tablets, three times a day
• Common side effects: diarrhea and stomach upset, usually mild and temporary
• Not addictive, no high, no withdrawal when stopped

Disulfiram: the commitment medication

Disulfiram (Antabuse) is the oldest of the three, approved since 1951. It does not reduce cravings directly. Instead, it blocks the breakdown of alcohol so that drinking causes an immediate, intensely unpleasant reaction: flushing, pounding heartbeat, nausea, vomiting, and chest pain. The reaction can start within 10 minutes of any alcohol and can be dangerous at high levels.

Because of that, disulfiram only makes sense for people who are fully committed to abstinence and want a strong external backstop against impulsive drinking. It requires real caution: even alcohol in mouthwash, sauces, or some cold medicines can trigger a reaction. It works best when someone you trust, like a partner, watches you take it each day.

Off-label options your doctor may consider

Several other medications are prescribed off-label for alcohol cravings, meaning evidence supports their use even though the FDA has not approved them for this purpose. The American Psychiatric Association and the VA/DoD treatment guidelines both recognize some of these as reasonable alternatives when first-line options are not a fit.

• Topiramate: an anti-seizure medication with good evidence for reducing heavy drinking and cravings
• Gabapentin: often used to ease post-withdrawal anxiety, sleep problems, and cravings, especially after detox
• Baclofen: a muscle relaxant studied for alcohol craving, sometimes used in liver disease
• Ondansetron: a nausea medication that may help people whose drinking started early in life

Gabapentin deserves a note of caution. It is itself misused by some people, and physical dependence can develop. If it is prescribed, it should be monitored and taken exactly as directed.

How to ask a doctor about medication

You do not need a specialist or a rehab admission to get these medications. Any primary care doctor, nurse practitioner, or psychiatrist can prescribe them. Telehealth services now prescribe naltrexone and acamprosate online in most states after a video assessment.

1. Be direct: say you want to cut down or stop drinking and have read about medication options
2. Be honest about how much you drink, since it affects which option is safest
3. Mention any opioid use, liver or kidney problems, and other medications you take
4. Ask what the follow-up plan looks like: when to check in, what to do if side effects appear
5. If your doctor is unfamiliar with these medications, ask for a referral or find one through SAMHSA's treatment locator at FindTreatment.gov

Cost is usually manageable. Generic naltrexone and acamprosate often cost under $30 a month without insurance, and most insurance plans cover them. The monthly Vivitrol injection costs more but is covered by many plans with prior authorization.

Medication works best with support around it

None of these medications is a cure on its own. Every major guideline, from the NIAAA to the American Society of Addiction Medicine, recommends combining medication with counseling, mutual support groups, or structured treatment. The medication quiets the physical pull; the support helps you build a life you do not need to escape from.

A reasonable expectation: medication shifts the odds in your favor. In clinical trials, people taking naltrexone or acamprosate were meaningfully more likely to reduce heavy drinking or maintain abstinence than those on placebo. Combined with counseling, the effect is stronger. Many people describe it as finally having enough quiet in their head to do the work.

Frequently asked questions