Alcohol withdrawal timeline — and when it becomes dangerous
Stopping alcohol has a predictable timeline — but unlike nicotine or caffeine, alcohol withdrawal can be medically serious, and in a small share of people it can be life-threatening. This page lays out what happens and, just as importantly, the warning signs that mean you need a doctor.
Please read the safety note first.
Last reviewed July 6, 2026
The alcohol withdrawal timeline
- 6–12 hours
Early (minor) withdrawal
The first symptom is usually tremor, which can appear within about 6 hours of the last drink, along with anxiety, insomnia, nausea, headache, sweating and a racing heart.1
tremoranxietyinsomnianauseasweating - 12–24 hours
Alcoholic hallucinosis (in some people)
Some people develop visual, tactile or auditory hallucinations while otherwise clear-headed and aware. This is distinct from — and less dangerous than — delirium tremens, but it is a sign withdrawal is significant.1
hallucinationsagitation - 24–48 hours
Seizure window
Generalized withdrawal seizures can occur, most commonly in the 6–48 hour window after the last drink. Anyone with a history of withdrawal seizures is at higher risk.1
seizure risktremorhigh blood pressure - 48–72 hours
Peak — the delirium tremens window
The most severe form, delirium tremens, typically begins 48–72 hours after the last drink: profound confusion, agitation, fever, a fast heart rate, and hallucinations. It is a medical emergency and can be fatal without treatment.12
confusionfeverrapid heartbeatsevere agitation - 3–7 days
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How dangerous is alcohol withdrawal?
It exists on a spectrum. Most people who experience withdrawal have milder symptoms, but severe withdrawal — seizures and delirium tremens — occurs in roughly 3–5% of cases and carries a real risk of death if untreated.1 The people most at risk are those who drink heavily and daily, have withdrawn before, or have other medical problems. That is exactly why heavy drinkers should not stop abruptly on their own.
Common questions
Can you die from alcohol withdrawal?
Yes. Severe withdrawal — particularly delirium tremens, which usually starts 48–72 hours after the last drink — can be fatal, which is why heavy drinkers should withdraw under medical supervision.12
How long does alcohol withdrawal last?
Symptoms usually start around 6 hours after the last drink, peak near 24–72 hours, and settle over about 5–7 days for most people. Delirium tremens, when it occurs, can last up to two weeks.12
Do I need a medical detox?
If you drink heavily or daily, have withdrawn before, or have other health conditions, medically supervised detox is the safest route — medications can prevent seizures and delirium tremens. Talk to a doctor or call the SAMHSA National Helpline at 1-800-662-4357.1
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Keep reading
Sources
This guide is educational and is not medical advice. Timelines vary from person to person. If you are quitting heavy alcohol use, or have a medical condition, talk to a doctor before you stop — some withdrawals can be dangerous. In the US you can reach the free, confidential SAMHSA National Helpline at 1-800-662-4357, or call or text 988.