Three FDA-approved medications can help you stop or reduce drinking: naltrexone, acamprosate, and disulfiram. Each works differently, and the best choice depends on whether you’re trying to quit entirely, cut back, or stay sober after you’ve already stopped. Combining medication with some form of behavioral support produces the best outcomes, but medication alone still reduces how much and how often people drink.
Naltrexone: Reducing the Reward of Drinking
Naltrexone is the most widely prescribed medication for alcohol use disorder and works by blocking the brain’s opioid receptors. When you drink alcohol, your brain releases natural opioids that trigger a rush of dopamine, the chemical responsible for feelings of pleasure and reward. Naltrexone intercepts that process. Drinking while taking it feels less satisfying, which over time reduces cravings and makes it easier to stop after one drink or skip drinking altogether.
In a major U.S. clinical trial of 1,383 patients, those taking naltrexone were abstinent on about 81% of days compared to 75% for those on placebo. The risk of a heavy drinking day also dropped from 73% to 66%. These numbers may sound modest, but for someone drinking daily, that difference translates to significantly fewer heavy episodes per month. Naltrexone comes as a daily pill or as a monthly injection for people who find it hard to take a pill consistently.
The Sinclair Method
Some people use naltrexone through the Sinclair Method, a protocol where you take the pill one hour before drinking rather than every day. The idea is that by blocking the pleasure response each time you drink, your brain gradually unlearns the association between alcohol and reward. In clinical studies published by John Sinclair in 2001, 78% of participants significantly reduced their drinking after several months on this protocol. People following this approach commonly report having one or two drinks at a time in situations where they’d previously have had many more. The Sinclair Method is not FDA-approved as a distinct treatment, but it uses an FDA-approved medication and has a growing base of clinical support.
Acamprosate: Calming the Brain After Quitting
Acamprosate works best for people who have already stopped drinking and want to stay sober. When you drink heavily for a long time, your brain adapts by becoming more excitable to counteract alcohol’s sedating effects. Once you quit, that hyperexcitability persists, causing anxiety, restlessness, irritability, and insomnia that make relapse tempting. Acamprosate helps restore the balance between excitatory and calming brain signals, easing that post-withdrawal discomfort.
The medication is taken three times a day and is typically started after you’ve been through the acute withdrawal phase. It doesn’t reduce cravings in the same way naltrexone does, and it won’t make you sick if you drink. Instead, it addresses the lingering neurological disruption that makes early sobriety feel so uncomfortable. People who respond well to acamprosate often describe feeling more “normal” and less on edge.
Disulfiram: The Deterrent Approach
Disulfiram was the first medication approved for alcohol use disorder and takes a completely different approach. Rather than changing how your brain responds to alcohol, it makes drinking physically unpleasant. Disulfiram blocks the enzyme that breaks down acetaldehyde, a toxic byproduct your body normally processes quickly when you drink. With that enzyme blocked, acetaldehyde builds up in your blood and produces flushing, headache, nausea, vomiting, and rapid heartbeat.
This reaction can begin within minutes of drinking and is deeply uncomfortable. Severe reactions, though rare, can include dangerous drops in blood pressure, breathing problems, and seizures. For this reason, disulfiram is only prescribed to people who are already abstinent and committed to not drinking. It works as a psychological guardrail: knowing what will happen if you drink can be enough to keep you from picking up a glass. The main limitation is that you can simply stop taking the pill if you decide to drink, which is why it tends to work best when someone else helps monitor daily use.
Off-Label Medications That Show Promise
Gabapentin, a medication originally developed for nerve pain and seizures, has shown real benefits for alcohol use disorder in clinical trials. In a 12-week study, gabapentin produced significant reductions in both drinking quantity and frequency, with higher doses working better. It also improved two problems that frequently drive relapse: insomnia and negative mood. For people whose biggest struggle in early sobriety is poor sleep and anxiety, gabapentin addresses those symptoms directly while also reducing cravings.
Topiramate, another seizure medication, has also been studied for alcohol reduction, though the evidence base is smaller. Both medications are prescribed off-label, meaning they’re not FDA-approved specifically for alcohol use disorder but are used based on clinical evidence. Your prescriber may suggest one of these if the three approved medications aren’t a good fit or haven’t worked.
Supplements That Support Recovery
Heavy drinking depletes several nutrients that your body needs to function well, and replenishing them matters during recovery. Thiamine (vitamin B1) is the most critical. Chronic alcohol use interferes with thiamine absorption, and severe deficiency can cause a brain condition called Wernicke-Korsakoff syndrome, which affects memory, coordination, and mental clarity. People in medical detox programs typically receive high-dose thiamine intravenously. If you’re reducing drinking on your own, an oral B-complex supplement is a reasonable starting point, though it won’t match the absorption of clinical doses.
Magnesium is another common deficiency in heavy drinkers. It serves as a cofactor that helps your body actually use thiamine, so being low in magnesium can make a thiamine deficiency worse. Symptoms of low magnesium include muscle cramps, anxiety, and trouble sleeping, all of which overlap with alcohol withdrawal and can make early sobriety harder than it needs to be.
Kudzu Root Extract
Kudzu root is the most studied herbal option for reducing alcohol intake. In a controlled trial of heavy drinkers who weren’t seeking treatment, a standardized kudzu extract reduced the number of drinks consumed per week by 34 to 57% and increased abstinent days by 16% compared to placebo. The extract appears to affect how quickly alcohol reaches the brain, making people feel its effects sooner and reducing the urge to keep drinking. Kudzu won’t replace medication for someone with a serious drinking problem, but it may help people who are trying to cut back and want a lower-commitment starting point.
Why Withdrawal Safety Matters
Before deciding what to take, it’s important to understand that stopping heavy drinking abruptly can be medically dangerous. Alcohol withdrawal symptoms typically begin within hours of the last drink and can escalate over the next two to four days. Mild withdrawal includes anxiety, tremors, sweating, and nausea. Severe withdrawal can progress to seizures, hallucinations, and a life-threatening condition called delirium tremens, which most often appears 48 to 96 hours after the last drink but can show up as late as 7 to 10 days later.
Seizures are most common in people who have gone through withdrawal before. If you’ve been drinking large amounts daily for weeks or months, a medically supervised taper or detox is the safest path. Medications used during acute withdrawal work by calming the overexcited brain activity that causes seizures and other dangerous symptoms. This is a separate process from the longer-term medications described above, which are started after the acute withdrawal phase has passed.
Combining Medication With Behavioral Support
The current standard of care combines medication with some form of behavioral treatment. This doesn’t necessarily mean intensive rehab. It can mean regular sessions with a therapist trained in motivational interviewing, participation in a support group, or even structured check-ins with a prescribing clinician. The COMBINE trial, one of the largest alcohol treatment studies ever conducted, found that naltrexone plus medical management visits performed as well as more intensive behavioral therapy alone. The point is that medication handles the neurological side of the problem while behavioral support helps you build the habits and coping skills that keep you on track when the medication does its job.
Many people now access both medication and support through telehealth platforms, which prescribe naltrexone or other medications online and pair them with virtual counseling. This has made treatment significantly more accessible for people who can’t or don’t want to attend in-person programs.