Alcohol Detox Timeline and Red Flags

You are watching the clock after the last drink and trying to decide whether this is misery or an emergency. NIAAA says alcohol withdrawal can be life-threatening when someone who has been drinking heavily for a long time stops suddenly, instead of stopping with medical support. What follows is what federal sources say those days can feel like, and which signs belong in an emergency department. There is no home quit schedule, and there are no medicine doses.

If someone is seizing, cannot be woken, is severely confused, or is struggling to breathe, call 911. For a mental health crisis, call or text 988.

Heavy drinking and withdrawal are not the same fact

CDC describes heavy drinking as 8 or more drinks a week for women, or 15 or more for men, and binge drinking as 4 or more drinks on an occasion for women, or 5 or more for men. CDC also says most people who drink excessively do not have alcohol use disorder, and that many of them can drink less without specialty treatment.

Withdrawal is the narrower problem. NIAAA says that if someone with severe alcohol use disorder decides to stop, they may need medical help so the stop is not dangerous. Doctors can prescribe medicine that makes the process safer and less distressing. Only a clinician who can see the person can tell a risky stop from one that does not need specialty withdrawal care.

What the first day can feel like

SAMHSA's TIP 45 quick guide says signs of acute alcohol withdrawal generally start 6 to 24 hours after the last drink. They can start while a significant amount of alcohol is still in the blood. The guide says the signs are highly variable. People in that window may feel restless, irritable, anxious, or agitated. Appetite can disappear. Nausea and vomiting are common. So are tremor, a fast heart rate, and higher blood pressure. Sleep can break into intense dreams or nightmares. Concentration, memory, and judgment can slip. Light, sound, and touch can feel too sharp.

Those feelings are miserable. They are also an incomplete list. The same guide includes hallucinations, paranoid thoughts, grand mal seizures, high body temperature, and delirium, meaning the person is disoriented about time, place, people, or the situation, and the level of alertness fluctuates. Having the milder symptoms does not prove the severe ones will stay away. TIP 45 says the course of alcohol withdrawal is unpredictable, and that it is impossible to tell who will or will not have a life-threatening complication.

Hour 24 on a clock is not a clearance to stay home. The detox guide explains why a nonmedical setting is the wrong default after severe withdrawal in the past. The first-72-hours guide describes evaluation and stabilization once someone is admitted. The symptom list itself lives on the withdrawal symptoms guide. None of those pages is a do-it-yourself protocol.

Seizures do not send a warning

TIP 45 says withdrawal seizures usually occur within the first 48 hours after drinking stops or drops, with a peak around 24 hours. A seizure happens quickly, usually without warning to the person or to anyone nearby. The guide says predicting who will have one cannot be done with any great certainty. Someone who has a seizure is at greater risk of progressing to delirium tremens.

That is the problem with waiting until it looks bad enough. The bad part can be the first sign. A seizure is an emergency. Do not drive the person yourself if they are still seizing or not breathing normally.

TIP 45 also says death and disability may result from delirium tremens or seizures when there is no medical care. The major goal of medical detoxification, in that guide's words, is to avoid those outcomes. Patients in severe delirium tremens should have emergency transport to an emergency department and generally need a hospital. Giving treatment should not wait on a lab result, a ride, or an open bed somewhere else.

Who belongs in a medical setting

NIAAA's count is that as many as half of patients with alcohol use disorder have some withdrawal symptoms when they stop, and a small proportion need medical care and monitoring. Alcohol withdrawal accounts for about 260,000 emergency department visits and about 850 deaths each year, on NIAAA's figures. Some symptoms may be managed in outpatient detox. Intensive inpatient detox is for patients at risk of life-threatening symptoms. Assessment tools exist to help predict that risk. Those tools are for clinicians. They are not a kitchen-table quiz.

TIP 45 sorts the medication decision into groups a clinician can recognize. People with a history of seizures or delirium need medication treatment as quickly as possible. People already in withdrawal with moderate symptoms also need medication promptly. For someone who is still intoxicated, or who stopped only a few hours ago and has no symptoms yet, the guide says the decision looks at age, years of dependence, and how many severe withdrawals came before. If the person can be watched, a clinician may recheck over the next 6 to 8 hours. Watched there means a clinical observation, not a relative setting an alarm.

The same guide tells programs to pay special attention when someone has withdrawn many times and each time looks worse. It calls that the kindling effect. A history of severe withdrawal makes a person a poor candidate for social detoxification, the short-term nonmedical setting that offers room, board, and support. Even those programs, TIP 45 says, should have medical surveillance, staff trained in basic life support, and a way to reach an emergency department. The kindling guide stays with that pattern.

Other reasons for immediate medical attention in that guide include a change in mental status, increasing anxiety with other danger signs, hallucinations, a temperature greater than 100.4°F, significant rises or drops in blood pressure or heart rate, abdominal pain, gastrointestinal bleeding, and neurologic signs that point toward seizures. Insomnia alone is common in withdrawal. Insomnia plus confusion, fever, bleeding, or a seizure is an emergency.

Withdrawal medicine is not recovery medicine

TIP 45 says benzodiazepines remain the medication of choice for alcohol withdrawal, and that early recognition matters. Which medicine, and how it is given, is decided by the clinician in the room. Hospital dosing is not reprinted here. Copying a protocol at home is how people seize. Stopping a benzodiazepine on your own is a separate danger. The benzodiazepine guide covers that, including the FDA's warning that there is no single taper for every patient.

NIAAA's handout for people thinking about their drinking is blunt about a different mix-up. Naltrexone, acamprosate, and disulfiram do not help withdrawal symptoms. Other medicines can prevent dangerous withdrawal. That step is sometimes called detox. The handout says medical supervision or monitoring by family or friends is important. That line is not permission to detox at home. TIP 45 says it is impossible to predict who will have a life-threatening complication. Withdrawal medicines still do not, by themselves, change drinking afterward. Plan the care that comes after. NIAAA's clinical overview says detox can be a critical first step and is not, by itself, alcohol treatment. Continuing care is measured in months and sometimes years.

If anxiety, depression, or another mental disorder is part of the picture, treat that with the alcohol problem rather than after it. The dual-diagnosis guide covers that question. NIAAA notes that people with those conditions have a greater risk of alcohol use disorder, and the reverse is also true. Liver disease has its own page at the liver guide.

What to do tonight

If withdrawal is already underway, or the person has had a seizure or severe confusion before, go to an emergency department. Do not wait for a referral line to call back.

If the person is medically stable and you are choosing a level of care, search FindTreatment.gov. Call or text (800) 653-9376 to talk through medical detox versus a lower level of care.

Additional Resources

Sources cited on this page:

• NIAAA Core Resource: Alcohol Use Disorder, From Risk to Diagnosis to Recovery
• NIAAA: Options for people who are thinking about their drinking
• SAMHSA TIP 45 quick guide, excerpted in NCBI Bookshelf (TIP 49, Appendix C)
• CDC: Alcohol Use and Your Health
• SAMHSA FindTreatment.gov
• 988 Suicide & Crisis Lifeline

Common Questions