What alcohol withdrawal is
If you have been drinking heavily and regularly, your body adjusts to the alcohol being there. Withdrawal is what happens when it stops arriving and the nervous system, which has adapted, becomes overactive. It is a physical process, not a matter of willpower — and it is the reason many people who genuinely want to stop find they cannot do it alone.
Not everyone who drinks heavily will have severe withdrawal. Some people have a difficult few days. A smaller number become seriously unwell. The difficulty is that it is not always obvious in advance which group you are in — and that is exactly what an assessment is for.
Alcohol withdrawal symptoms
The signs of alcohol withdrawal usually begin within hours of the last drink and are often at their worst in the first two to three days. They fall into two groups.
Early signs of alcohol withdrawal: physical
Shaking or tremor, especially in the hands. Sweating. A racing or pounding heart. Nausea, vomiting, or no appetite. Headache. Difficulty sleeping.
Psychological symptoms of alcohol withdrawal
Anxiety that feels out of proportion. Restlessness and irritability. Difficulty concentrating. Low mood. Vivid or disturbing dreams.
Alcohol withdrawal and depression
Low mood and anxiety during alcohol withdrawal are common, and they often lift as the body settles. But if depression or anxiety was there before the drinking became heavy, it usually needs attention in its own right. This is one of the things assessed and treated together rather than separately — which is a large part of why withdrawal managed by a specialist differs from simply stopping.
The dangers of alcohol withdrawal
Most people are aware that stopping is uncomfortable. Fewer know that for some people it is a medical emergency.
- Seizures. Can occur in the first 48 hours, sometimes in people who have never had a seizure before.
- Delirium tremens. A severe state involving confusion, agitation, hallucinations, fever and instability of blood pressure and heart rate. It usually appears two to three days after the last drink and requires hospital treatment. Untreated, it can be fatal.
Risk is higher if you have withdrawn from alcohol before, if you have had a seizure or delirium in the past, if you drink through the day or drink to stop the shakes in the morning, if you also take sedatives or sleeping tablets, or if you have significant liver, heart or other medical problems.
The point of this text is not to frighten you. It is that these risks are predictable and manageable when someone assesses them first — and unpredictable when nobody does. That is the whole argument for supervision.
If any of that sounds like you, that is a reason to speak to someone now rather than later. Phone (07) 3180 6020 — you do not need a referral in hand to ask a question.
How long does alcohol withdrawal last?
For most people the acute physical symptoms settle within five to seven days, with the hardest period in the first seventy-two hours. Sleep, mood and anxiety often take longer — weeks rather than days — to return to normal. Knowing that in advance matters, because the point where people return to drinking is frequently not day two; it is the third week, when they feel flat and assume something has gone wrong.
| TIMEFRAME | EXPECTED SYMPTOMS & CLINICAL STATUS |
|---|---|
| 6–12 hours | First symptoms — tremor, sweating, anxiety, nausea, difficulty sleeping |
| 12–48 hours | Symptoms most intense. Withdrawal seizures window. |
| 48–72 hours | Delirium tremens can develop. Hospital care needed. |
| Days 5–7 | Physical symptoms settle for most. |
| Weeks 2–6 | Sleep, mood and energy gradually return to normal. |
The weeks afterwards have a name. Prolonged or post-acute withdrawal describes the low mood, poor sleep, irritability and flatness that can persist for weeks after the physical symptoms have gone. It is not a sign that something has gone wrong; it is a recognised part of recovery, and knowing it is coming is most of what makes it survivable. It is also the point at which people most often go back to drinking.
Timeline of alcohol withdrawal. Reviewed September 2026.
Withdrawing from alcohol safely
Safe alcohol withdrawal is not a single method. It starts with an assessment: what you drink and for how long, what happened the last time you stopped, your other health conditions and medications, and what support you have around you. From that a plan is made — and where that plan happens depends on the risk.
Outpatient alcohol withdrawal
Many people can withdraw safely while staying at home, with medical review, medication where appropriate, and a clear plan for what to do if things change. This suits people at lower risk who have someone with them and can be seen regularly.
How outpatient care works in practice, and who it does not suit, is set out on the private outpatient treatment page.
Inpatient withdrawal
This is the practical difference between a specialist and most other options: an outpatient plan or a virtual assessment prior to direct inpatient admission can be coordinated by the same doctor, rather than requiring separate referrals.
Coordinated alcohol withdrawal care. Reviewed September 2026.
Alcohol withdrawal and treatment: what comes next
Getting through withdrawal is the beginning of treatment, not the whole of it. The physical dependence is dealt with in a week; what led to the drinking, and what keeps pulling a person back, is not. This is the part that decides whether the effort holds.
What follows depends on the person, and is agreed rather than imposed. It can include medication that reduces craving or makes drinking less rewarding, treatment of depression, anxiety, pain or sleep problems that sit underneath the drinking, a plan for the situations most likely to lead to a relapse, and ongoing review at a spacing that suits you.
This is the practical reason to see an addiction medicine specialist rather than simply detox and hope: the same person who manages the withdrawal continues afterwards, and adjusts the plan when circumstances change.
If you are not sure what this kind of specialist does, there is a fuller explanation of what an addiction physician does.
Alcohol withdrawal care journey. Reviewed September 2026.
Withdrawal from other substances
Drug withdrawal symptoms differ by substance, and so does the safe way through them.
Benzodiazepines and sleeping tablets
Stopping suddenly carries a seizure risk comparable to alcohol, so the same rule applies: do not stop on your own. Dependence that began with a prescription is common, and it is treated here as a clinical problem rather than a personal failing.
Opioids, including prescribed pain medication
Withdrawal is rarely life-threatening, but it is severe enough that most people cannot get through it unaided. There are treatments that make it manageable, and they work better when started before a crisis.
Stimulants
The physical risk is lower. What most people find hardest is the drop in mood, sleep and energy afterwards — which is treatable, and is often the point at which people go back.
If more than one substance is involved — which is common, including alcohol together with prescribed medication — the plan changes again. That is a reason to have it assessed rather than guessed at.
If you are worried about someone else
Two things are worth knowing.
• Do not encourage someone to stop suddenly on their own if they have been drinking heavily every day. Well-meant pressure to ‘just stop’ is how some people end up having a seizure. Stopping is the right goal; doing it unsupervised is the risk.
• You can make the first contact. A partner or family member can ring to ask what is involved and what the options are, before the person concerned is ready to speak to anyone. You are also welcome to come to the appointment with them.
What you cannot do is make the decision for them, and it is not a failure on your part when they are not ready. Getting clear information early usually helps more than waiting for a crisis.
Other support available in Australia
These services are free, confidential and available whether or not you are seeing anyone.
• National Alcohol and Other Drug Hotline — 1800 250 015
• Adis Queensland — 1800 177 833. 24-hour support.
• Lifeline — 13 11 14. 24-hour crisis support.
• Family Drug Support — 1300 368 186. For families and friends.
• Alcoholics Anonymous and SMART Recovery. Peer support groups.
• If you have served in the ADF and hold a DVA card — veterans and DVA.
Where this information comes from
The clinical statements on this page follow current Australian guidance, checked on 2 September 2026:
- Guidelines for the Treatment of Alcohol Problems (2021) — commissioned by the Australian Government and aligned with the NHMRC guidelines.
- Australian Guidelines to Reduce Health Risks from Drinking Alcohol, National Health and Medical Research Council (2020).
- Queensland Alcohol and Drug Withdrawal Clinical Practice Guidelines, Queensland Health — the withdrawal management standards applied in this state.
- Register of practitioners, Australian Health Practitioner Regulation Agency — registration and specialty.
Guidance changes. Each link should be checked against the current published version before it is relied on.
Reviewed by Dr Douglas Brown, MD FRACGP FAChAM, addiction medicine specialist, AHPRA MED0002140538. Last reviewed: 2 September 2026.