If you drink heavily and regularly, your body adjusts to having alcohol in your system. When you stop or cut down, that adjustment has to reverse, and the in-between period is what’s known as alcohol withdrawal. For some people it’s mild and passes in a few uncomfortable days. For others, particularly those who’ve been drinking heavily for a long time, it can be serious and needs medical support.
This page sets out what withdrawal is, the symptoms to expect at different stages, the warning signs that mean you need urgent help, and where to find support — including what comes after withdrawal, when the real work of recovery begins.
This page is general information, not medical advice, and cannot tell you what will happen in your own body. Stopping drinking suddenly after heavy or prolonged use can be dangerous, even life-threatening. If you drink daily or feel physically dependent on alcohol, speak to a GP or a local alcohol service before you stop or cut down. In an emergency — a seizure, severe confusion, or hallucinations — call 999.
What alcohol withdrawal is, and why it happens
Alcohol is a depressant. It slows down activity in your central nervous system. If you drink heavily and often, your brain and body adapt to that constant slowing effect by ramping up their own activity to compensate — this is what’s meant by physical dependence.
When you stop drinking, that compensation doesn’t switch off straight away. Your nervous system is left running “hot” without the alcohol that was balancing it out, and the result is the cluster of symptoms known as withdrawal: shakiness, anxiety, a racing heart, and in more severe cases, seizures. It’s the same underlying mechanism whether the symptoms are mild or severe — only the degree differs, largely depending on how much and how long someone has been drinking.
Withdrawal is your body recalibrating, not a personal failing. It’s also the reason the NHS is clear that dependent drinkers shouldn’t simply try to “power through” stopping alone.
Who is at risk of withdrawal
Not everyone who drinks will experience withdrawal when they stop. It’s most associated with:
People who drink daily or near-daily, especially in large amounts. People who’ve noticed they need to drink increasing amounts to feel the same effect, or who feel unwell, shaky or anxious first thing in the morning until they have a drink. People who’ve been through alcohol withdrawal before — each previous episode can make future withdrawal more likely to be severe, a pattern sometimes called “kindling”. People who also use other sedative substances or medications, or who have other health conditions, which can complicate withdrawal.
If any of this sounds familiar, that’s worth taking seriously — not as a judgement, but as a reason to get advice before you change your drinking, rather than after.
Common symptoms: mild to moderate
For most people, alcohol withdrawal symptoms are mild to moderate and manageable, though still unpleasant. The NHS lists these as the most common:
Shaking or trembling, particularly in the hands. Sweating, even when you’re not hot. Nausea or being sick. Headache. Anxiety or feeling on edge. Irritability and low mood. Difficulty sleeping, or vivid, unsettling dreams. A fast heartbeat. Loss of appetite.
These symptoms typically start within several hours of the last drink and tend to peak within the first day or two, though the exact pattern varies from person to person. They can still be distressing, and the NHS advises that anyone who is dependent on alcohol should get medical advice before stopping, even if they expect their symptoms to be mild, because it isn’t always possible to predict in advance how withdrawal will go.
Severe symptoms and red flags — when to call 999
A smaller number of people go on to develop severe withdrawal symptoms. These are medical emergencies and need immediate attention. Call 999, or get to A&E, if you or someone you’re with experiences:
A seizure (fitting or convulsions). Severe confusion or disorientation. Hallucinations — seeing, hearing or feeling things that aren’t there. A very high temperature, or a rapid, irregular heartbeat. Agitation combined with any of the above.
The most serious form of withdrawal is called delirium tremens, or DTs. It doesn’t affect everyone, but when it happens it typically develops 48 to 72 hours after the last drink, sometimes a little later, and can involve severe confusion, hallucinations, seizures and a dangerously high heart rate and temperature. Delirium tremens is a medical emergency. It can be fatal if untreated, which is why anyone showing these signs needs emergency care straight away rather than waiting to see if it passes.
The typical withdrawal timeline
Everyone’s experience is different, and how severe or long withdrawal lasts depends on things like how much someone has been drinking, for how long, and their general health. That said, there’s a broad pattern the NHS and other health bodies describe, and it’s useful as a general guide rather than a precise prediction:
Within 6 to 12 hours of the last drink, early symptoms can begin — shakiness, anxiety, sweating, nausea and headache. Between 12 and 48 hours, symptoms are often at their most intense for people with mild-to-moderate dependence, and this is also the window in which some people experience seizures. Around 48 to 72 hours, this is the period when delirium tremens is most likely to develop in people who go on to experience it, so it’s a particularly important stretch to have support in place. Over the following week, physical symptoms usually start to ease, though tiredness, low mood and disrupted sleep can persist. In the weeks and months after, some people experience a longer tail of lower-level symptoms — poor sleep, low mood, anxiety or irritability — sometimes referred to as post-acute withdrawal. This tends to improve gradually with time, and support helps.
These are general ranges, not a countdown you can rely on for your own situation. That’s exactly why medical advice matters before you stop.
Withdrawal is your body recalibrating, not a personal failing.
Why medically supervised withdrawal matters
Because it’s genuinely difficult to predict in advance who will have a mild experience and who might develop severe symptoms, the NHS advises that people who are dependent on alcohol should get professional support to stop drinking, rather than doing it alone and unplanned.
In practice, that support can take a few forms depending on the level of dependence and risk. A GP can assess your drinking, talk through the safest way to stop, and refer you on to specialist support. Community alcohol services offer structured help, often including regular check-ins during withdrawal, and can arrange access to prescribed medication where appropriate — GPs and specialist services can prescribe medication to make withdrawal safer and more comfortable, tailored to the individual. For people at higher risk of severe withdrawal, inpatient or residential detox provides round-the-clock medical supervision.
None of this needs to be arranged alone. Your GP is a reasonable first port of call, and can point you towards local alcohol services — many of which are free to access and don’t require a lot of paperwork to get started.
After withdrawal: where fellowship and the Twelve Steps fit in
Getting through withdrawal is a genuine milestone, but it’s the start of recovery rather than the whole of it. The physical symptoms passing doesn’t mean the underlying relationship with alcohol has been addressed — that’s a longer process, and it’s where ongoing support becomes just as important as the medical side of stopping.
This is where mutual-aid fellowships like Alcoholics Anonymous can play a part. AA meetings are free, anonymous, and open to anyone who wants to stop drinking — there’s no appointment needed and no cost involved. Our guide to the Twelve Steps sets out what the programme actually involves in plain, modern language, and our guide to your first AA meeting walks through what to expect if you’re thinking about going along. If you’re further along and looking at what stopping drinking involves more broadly, our guide to stopping drinking covers that ground in more detail.
Recovery tends to work best as a combination: medical support to get through withdrawal safely, and ongoing support — whether that’s a fellowship, counselling, or a community service — to help sustain change afterwards.
Taking the first step
If you recognise yourself in any of this, the most useful first step is usually the simplest one: talk to your GP, or contact a local alcohol service, before you change your drinking. That conversation costs nothing and doesn’t commit you to anything beyond having it.
If you’re looking for support alongside medical care, you can find a nearby AA meeting using our meeting finder, or browse our wider collection of free resources for more on what recovery can look like in practice. Whatever your starting point, you don’t have to plan this on your own.
Support for what comes next
Withdrawal is the start, not the whole story. Free meetings run every day across the UK and Ireland.
Frequently asked questions
How long does alcohol withdrawal last?
Acute physical symptoms usually peak within the first one to three days and largely ease within about a week, though this varies by individual. A longer tail of milder symptoms — poor sleep, low mood, anxiety — can continue for weeks afterwards for some people as the nervous system settles. There’s no single timeline that applies to everyone, which is part of why medical advice matters before you stop.
Can I detox from alcohol at home?
Only with medical advice and, usually, medical support in place. If you’re dependent on alcohol — drinking daily or in large amounts — the NHS advises against stopping suddenly on your own, because it isn’t possible to predict in advance whether you’ll experience severe symptoms. Speak to a GP or an alcohol service first; they can assess your situation and advise on the safest way to stop, which may include support at home, a community programme, or inpatient care depending on your circumstances.
What helps with mild symptoms?
Alongside any medical support you’ve been advised to have in place, general comfort measures include resting, staying hydrated, eating regularly even if appetite is low, and having someone around who knows what’s happening and can check in on you. This page doesn’t cover medication, as that should only be taken on the advice of a GP or alcohol service, who can assess what’s appropriate for you.
When should I go to A&E?
Go to A&E, or call 999, immediately if you or someone you’re with has a seizure, appears severely confused, is experiencing hallucinations, or has a very high temperature or rapid, irregular heartbeat during withdrawal. These can be signs of a serious complication such as delirium tremens, and need urgent medical attention rather than waiting to see if they pass.
Is withdrawal the same as a hangover?
No. A hangover follows a single episode of drinking and generally clears up within a day as your body processes the alcohol. Alcohol withdrawal happens after a period of regular, heavy drinking, when your nervous system has adapted to alcohol being present and has to readjust once it stops — it can be more intense, last longer, and in some cases carries the risk of serious complications that a hangover doesn’t.
Stepwise Recovery is an independent publisher. This page is general information, not medical advice. We are not affiliated with, endorsed by, or connected to Alcoholics Anonymous or any twelve-step fellowship or mutual-aid programme. If you are worried about your drinking, speak to your GP or call 999 in an emergency.