How Long Should You Take Naltrexone?

The short answer: There is no fixed end date. Many people take naltrexone daily for six to twelve months, and some stay on it longer while new habits settle. The first 90 days are when cravings quiet and routines start forming. The months after that are when those routines become automatic. Your prescribing clinician decides the right length with you, based on your goals and progress, not a calendar. This six to twelve month window also lines up with guidance from major addiction treatment groups, including SAMHSA's recommendations for alcohol use disorder.

TLDR:

• Most people take naltrexone for six to twelve months; 90 days is the start, not the finish line.
• SAMHSA guidelines recommend at least six months, since two thirds of relapses happen in that window.
• Past month three, benefits shift from drinking less to sleeping better, feeling steadier, and spending less.
• Decide when to stop with your clinician, not on a hunch or a good stretch of weeks.
• Onir prescribes one daily dose at the same time each day to keep the pull quiet in the background.

Over the last three months you have made hundreds of small decisions that reshaped your relationship with alcohol. Maybe you started saying no to the extra drink. Maybe stopping after one or two got easier. Maybe alcohol just does not take up the same space in your head that it used to.

Wherever you are today, you have already come a long way. And that is usually when the question shows up.

Do I still need to take naltrexone?

The real answer is that it depends on you. But for most people, 90 days is not the finish line. It is the foundation.

What actually happens in the first 90 days

When you start taking naltrexone daily, your brain begins responding to alcohol differently. Instead of reinforcing the loop that makes drinking feel rewarding, the medication quietly reduces alcohol's reinforcing effect. Over a few weeks, cravings get less insistent, stopping after fewer drinks feels less like a fight, and alcohol takes up less of your day.

But the medication is only half of it. The first 90 days are also when you are building new habits without necessarily noticing. Most people find they have started:

• Drinking more intentionally instead of automatically.
• Choosing alcohol less often in the first place.
• Feeling steadier in social situations.
• Sleeping better and waking up with more energy.
• Spending noticeably less money.

Those changes take time to build, and they hold better with consistency behind them.

Why continuing usually matters

The biggest misconception about cutting back is that once you feel better, the work is finished. In practice the opposite is closer to the truth.

By the end of your first 90 days you have momentum. Routines that required effort in week one now happen without much thought. Continuing treatment gives those habits more repetitions, and repetitions are what make them stick when life gets busy or stressful.

Think of the first 90 days as learning a new skill. The next 90 are where confidence grows.

The numbers back this up. Clinical research shows that 40 to 60 percent of people relapse within the first year after stopping treatment for alcohol use, and roughly two thirds of those relapses happen within the first six months, often right after they start feeling like they no longer need the support. That is part of why SAMHSA treatment guidelines recommend staying on naltrexone for at least six months to a full year. It is not a sign that something is wrong. It is simply the window where the work you have already done has a chance to become durable.

What changes after three months

Everyone is different, but the benefits people report past month three often have less to do with drinking totals and more to do with everyday life:

• Better sleep quality.
• More consistent energy through the afternoon.
• More confidence in social settings.
• Feeling present with family and friends.
• Steadier focus at work.
• Less anxiety around drinking occasions.
• Hundreds or thousands of dollars saved over a year.

Members also describe something harder to measure: they simply spend less time thinking about alcohol. That mental quiet is often the change they value most, and it reflects what drinking less without quitting looks like in practice.

Can you stop taking naltrexone after 90 days?

Some people do. Many choose to keep going.

The right time to stop depends on your plan, your goals and your progress, and it is a decision to make with your prescribing clinician, not on your own. If cravings are still surfacing, if your routines are new, or if a high pressure stretch is coming up, staying on it a while longer is a reasonable call. Major treatment guidelines, including SAMHSA's recommendations for alcohol use disorder, generally point to a minimum of six months to a year on naltrexone, and no guideline sets a universal cutoff for when you must stop. Medication also tends to work best alongside other support, pairing it with counseling, behavioral support, or regular check-ins with your clinician tends to produce results that hold up better over time than medication alone.

If you do stop, it is not all or nothing. Plenty of people come back to a daily dose later during a period when it would help, and that is a normal part of managing this over years, not just a matter of weeks.

Reasons to keep going

• Cravings are still surfacing, even occasionally.
• Your routines still feel deliberate and new. New habits need repetition before they hold on their own.
• A high-pressure period is coming up, like a work deadline, a holiday season, or a stretch of travel.
• Your confidence in the new habits is still building.

Signs you might be ready to stop

• Your drinking changes have been consistent and steady across several months, not only a good stretch.
• You feel confident in the habits and routines you have built.
• You no longer spend much mental energy thinking about alcohol.
• Your clinician has reviewed your progress and agrees the timing makes sense.

Keep taking it daily, not occasionally

Whatever length you land on, the how matters as much as the how long. At Onir we recommend one dose at the same time every day. Steady levels of medication keep the pull quiet in the background, so you are never trying to predict a craving or make a decision at 5 p.m.

If you want the full version of that, read when to take naltrexone. It also helps to know what to expect physically, so take a look at naltrexone side effects before you start.

This article focuses on the daily oral tablet. A once monthly extended release injectable form, brand name Vivitrol, is also an option for people who find a daily pill hard to keep up with. Both forms generally follow the same duration guidance, six to twelve months or longer, set with your clinician.

Do not measure success by perfection

It is easy to look back over three months and land on the nights you drank more than you planned. Better questions:

• Am I thinking about alcohol differently than I was three months ago?
• Do I feel more in control of the choice?
• Have I built routines I did not have before?
• Do I feel better physically or mentally?
• Am I proud of how far I have come?

Progress is not getting everything right. It is moving in the right direction long enough for it to hold.

The bottom line

The first 90 days are not the finish line. They are the momentum. Whether your changes have been dramatic or quiet, you have already invested in a healthier relationship with alcohol.

For most people, continuing is not starting over. It is protecting the progress they already worked for.

What to remember

• There is no universal stop date. Six to twelve months is common, and longer is fine.
• 90 days is when drinking changes most. The months after are when the habit sets.
• Take your dose at the same time each day, your clinician can help you pick a time that fits your routine.
• Decide when to stop with your clinician, not on a hunch.

If drinking less has been quietly on your mind, the fastest way to find out whether this fits is the 60 second quiz. A licensed physician reviews your answers. It is private, and it does not commit you to anything.

In their words

Does naltrexone work for everyone?

No single approach fits every person, and naltrexone is no different. It tends to be a good fit for adults who want to drink less but have not found lasting success on their own, and who would rather handle this privately online instead of in a waiting room.

It is not right for everyone, though. You should not take naltrexone if you are currently taking opioids, since the medication blocks their effects and can trigger sudden withdrawal. It is also not appropriate if you have acute hepatitis or liver failure, if you need medically supervised detox, or if you are pregnant or breastfeeding.

The clearest way to find out where you stand is to complete the intake form. Our clinical team reviews your answers and will tell you plainly if naltrexone is not the right fit for you.

FAQ

How long do most people stay on naltrexone?

Six to twelve months is the most common range, though some people take it for a shorter stretch and others stay on it longer to protect habits they have built. Your clinician reviews your progress and adjusts the plan with you.

Is it safe to take naltrexone long term?

Naltrexone has decades of clinical use behind it and has held FDA approval for alcohol use disorder since 1994. Your clinician monitors your progress and can adjust or stop treatment at any point.

What happens if I stop after 90 days?

Some people maintain their progress on habits alone. Others notice cravings gradually returning. If that happens it is not a failure, and restarting a daily dose is straightforward.

Do I have to quit drinking completely?

No. Naltrexone is designed to help you drink less over time rather than force abstinence. Many members find drinking simply takes up less space in their lives, and the goal stays yours to set.

What is naltrexone and how does it help with drinking less?

Naltrexone is a prescription medication that has been FDA-approved for alcohol use disorder for over 30 years. It is non-addictive and non-habit-forming. When you drink, your brain releases endorphins that reinforce the behavior, which is why drinking can feel automatic. Naltrexone gently blocks the receptors that carry that reinforcement, so alcohol feels less rewarding and the pull weakens. Most members notice the pull of alcohol easing within 10 to 14 days.

How do I get naltrexone prescribed online without seeing a doctor in person?

Telehealth lets you do the whole process from home. With Onir, you start with the free 60-second quiz, then complete the $19.99 clinician review, which is refunded in full if you're not approved. A licensed clinician reviews your answers, usually within 24 hours, through secure text-based chat rather than a live video call. If naltrexone is a fit, a 90-day supply of FDA-approved generic naltrexone hydrochloride 50 mg tablets arrives in plain, unmarked packaging. The cost is $99 a month, billed as $297 every 90 days, with medication and clinician care included. Onir is available in all 50 states.

How does medication-assisted treatment for alcohol use disorder actually work?

Medication-assisted treatment pairs an FDA-approved medication with support such as counseling or regular check-ins with a clinician. Three medications are approved for alcohol use disorder: naltrexone, acamprosate and disulfiram. Each works differently. Naltrexone reduces the reward alcohol delivers. Acamprosate helps with the lingering discomfort that can follow stopping. Disulfiram causes an unpleasant reaction when you drink. A clinician helps you choose based on your goals and health history, then adjusts the plan as you go.

What tools can I use to cut back on drinking and keep it private from my employer?

A few options tend to work well together: free self-guided resources like drink trackers and the NIAAA's Rethinking Drinking site, counseling, and a prescription medication such as naltrexone through telehealth. Onir is built for privacy. It is self-pay and does not bill insurance, so there is no insurance claim record from treatment. Patient data is never shared with an employer, Onir does not contact your primary care doctor unless you ask, and substance use treatment records have extra federal protections under 42 CFR Part 2. One thing to know: a filled prescription is recorded in the national e-prescribing network, so naltrexone may appear on a medication list if you visit a doctor's office.