Hangover
A hangover is the headache, nausea, fatigue, or anxiety that can follow drinking. Time allows recovery, while fluids, bland food, and rest may make the wait easier.
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What a Hangover Feels Like and What Helps
A pounding head, nausea, thirst, exhaustion, and an anxious or foggy feeling after drinking can be a hangover. A hangover is the group of physical and mental symptoms that follows drinking too much alcohol, often becoming worst as the amount of alcohol in your blood returns to nearly zero. That timing explains why the morning can feel worse than the night before.[1]
Time is the only established cure, but you can make the wait more bearable. Sip water, try a small amount of bland food if you can tolerate it, and rest. Avoid another alcoholic drink. Feeling more awake does not mean your attention and coordination have recovered enough to drive or operate machinery.[1][2]
Call 911 immediately for suspected alcohol poisoning, including someone who cannot be awakened, has a seizure, or is breathing slowly or irregularly. Do not wait for every sign or assume the person can sleep it off.[3]
Heart palpitations with chest pain, trouble breathing, or fainting also need emergency help. If you have been drinking heavily for a prolonged period, symptoms after cutting back may be alcohol withdrawal, the body’s reaction to getting less alcohol after adapting to it. Seek medical help rather than assuming you only need a hangover remedy.[4][5][6]
- A hangover involves more than dehydration. Stomach irritation, disrupted sleep, and the body’s response to alcohol also contribute.[1]
- Hangover symptoms can last 24 hours or longer. A zero blood alcohol level does not establish that you are fit to drive or care for someone else.[1]
- A morning drink can prolong the problem. Temporary relief from more alcohol is different from recovery.[1]
Hangover Symptoms and How Long They Last
Hangovers vary from person to person. Along with headache and nausea, you may notice muscle aches, dizziness, sensitivity to light or sound, an unsettled stomach, irritability, sweating, or a low, anxious mood. Some people call the anxiety “hangxiety.” You do not need every symptom to have a hangover.[1]
There is no dependable hour when everyone feels normal again. Symptoms tend to peak as blood alcohol approaches zero and can continue for 24 hours or longer. Use that timeline to understand the experience, not to decide that severe symptoms must be harmless because they occurred the next morning.[1]
Why You Can Feel Sober but Still Be Impaired
The National Institute on Alcohol Abuse and Alcoholism explains that a hangover can affect attention, decision-making, and muscle coordination. These abilities matter for driving, operating equipment, and caring for other people, even after the alcohol itself has largely cleared.[1]
For example, imagine you eat breakfast and feel awake enough to start your day, but you are still dizzy and struggling to concentrate. Postponing a drive, arranging a ride, or asking someone to cover a safety-sensitive task gives recovery time. This is an illustrative example, not a test that can certify when you are safe to drive.
What Can You Do for a Hangover Right Now?
For ordinary hangover discomfort, focus on fluids, food you can manage, and rest. These measures may ease the experience while your body recovers. They do not reverse intoxication or provide a shortcut to normal brain function.[1][2]
- Sip water. Small sips may be easier to manage when your stomach is unsettled. You do not need a special “detox” drink.[2]
- Try bland food if you can eat. Toast or crackers may settle an upset stomach. Start with what you can tolerate rather than forcing a large meal.[2]
- Rest and reduce demands. Sleep may help you feel better, but do not confuse normal rest with leaving an unresponsive person to sleep off possible alcohol poisoning.[2][3]
- Do not use more alcohol as a remedy. Another drink may briefly reduce discomfort while contributing to a longer hangover.[1]
Be Careful with Pain Medicines After Drinking
No over-the-counter pain medicine is a universally safe hangover fix. Alcohol combined with acetaminophen, also called Tylenol®, can harm the liver. Aspirin and ibuprofen, including Advil® or Motrin®, can increase stomach irritation, which alcohol may already have caused.[1][2]
Before taking a pain reliever, check with a pharmacist or healthcare professional about your recent drinking, other medicines, and health conditions. Do not assume that an over-the-counter label makes a medicine suitable for you after alcohol. Neither taking a pill before bed nor waiting until morning removes the need for caution.[1][2]
What About Coffee, Electrolytes, and Hangover Supplements?
A 2022 systematic review examined 21 placebo-controlled trials involving 386 participants.[7] Its search covered research through August 1, 2021. The reviewers rated the evidence for every tested intervention as very low certainty, meaning the findings were too unreliable to support a confident recommendation. No two studies tested the same intervention.[7]
Some small studies reported improvement, including trials of plant extracts or L-cysteine, an amino acid sold in supplements. That is a reason for further research, not proof that a product will work for you. A promising result from one small study is different from a treatment that repeatedly helps in well-designed trials.[7]
The comparison below separates comfort measures from claims of a cure. “Unproven” means good evidence of dependable benefit is missing, not that researchers have proved every possible product useless.
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| Approach | What It Can and Cannot Do |
|---|---|
| Water and bland food | Water addresses thirst, and toast or crackers may settle your stomach. Neither is a proven hangover cure.[1][2] |
| Rest and time | Rest may make recovery more comfortable. Your body still needs time to recover from alcohol’s effects.[1][2] |
| Pain medicines | Ask about suitability first. Acetaminophen with alcohol can harm the liver, while aspirin and ibuprofen can irritate the stomach.[1] |
| Sports drinks or electrolyte treatments | Electrolytes are minerals involved in fluid balance. Added electrolytes have not been shown to reduce hangover severity.[1] |
| Coffee or a shower | Neither cures a hangover or speeds the brain’s recovery from alcohol. Coffee is not evidence that you are ready to drive.[1] |
| Another alcoholic drink | A “hair of the dog” drink may temporarily mask symptoms while prolonging the hangover.[1] |
| Supplements marketed as cures | The 2022 review found only very low-certainty evidence. Its small trials do not establish a dependable treatment.[7] |
Why Alcohol Causes a Hangover
A hangover has several contributors, so replacing lost water addresses only part of the problem. Your body is also recovering from stomach irritation, poor sleep, and changes in immune and brain activity. These processes help explain why you can remain unwell even when little alcohol is left in your blood.[1]
Fluid Loss and Stomach Irritation
Alcohol reduces the release of vasopressin, a hormone that tells your kidneys to hold on to fluid. You urinate more and can become mildly dehydrated, contributing to thirst, fatigue, and headache. Alcohol also irritates the stomach lining and increases acid release, which can bring nausea and stomach pain.[1]
These are different problems. Water can help with thirst without settling every symptom, and a headache is not proof that all you need is a sports drink. Research has not shown that adding electrolytes reduces hangover severity.[1]
Alcohol Breakdown and Inflammation
As your body breaks down alcohol, mainly in the liver, it produces acetaldehyde, a toxic but short-lived byproduct. Alcohol and its breakdown can contribute to inflammation, the body’s response to injury or irritation. That response may help explain the achy, generally unwell feeling of a hangover.[1]
A 2020 paper reanalyzed two small studies of young Asian men and found associations between some inflammation measures and hangover severity. The findings help researchers investigate what happens, but they cannot rank inflammation above dehydration for every person or tell you which symptom needs which remedy.[8]
Disrupted Sleep and Next-Day Anxiety
Alcohol may make falling asleep easier while leaving sleep fragmented and causing earlier waking. You can spend hours in bed and still wake tired. The relationship between alcohol and sleep helps explain why sleeping after drinking does not necessarily feel restorative.[1]
The brain also adjusts to alcohol’s relaxing effects. As those effects wear off, you may feel more restless or anxious than before drinking. This rebound can contribute to a hangover, but anxiety alone does not tell you whether you are experiencing a hangover or potentially dangerous withdrawal after sustained heavy drinking. Your drinking history matters.[1][6][9]
Does the Type or Amount of Alcohol Affect a Hangover?
In general, more alcohol means a worse hangover. Drinking beer before liquor, or switching the order, does not protect you. People differ in how they respond, so there is no universal number of drinks that reliably predicts whether you will have a hangover.[1]
Drink ingredients can also matter. Congeners are substances produced during fermentation that contribute flavor and smell. Bourbon has more congeners than vodka, and some people experience worse hangovers after higher-congener drinks.[1][10]
What the Bourbon-and-Vodka Study Actually Found
In a controlled study of 95 adults ages 21 to 33 who were heavy drinkers, participants drank bourbon or vodka on one night and a matched alcohol-free drink on another.[10] People felt more hungover after bourbon. However, bourbon versus vodka did not change the study’s measures of sleep or next-day mental performance.[10]
Alcohol itself, compared with the alcohol-free drink, disrupted sleep and impaired some tasks requiring sustained attention and quick responses. The useful distinction is between how bad you feel and how well you function. Choosing vodka instead of bourbon is not a way to make next-day driving or other demanding work safe.[10]
How Can You Prevent Another Hangover?
Avoiding alcohol is the most dependable way to prevent an alcohol hangover. Reducing how much you drink can also reduce the chance of a rough morning. Food, water, a different drink order, or a particular type of liquor does not cancel the effects of heavy drinking.[1]
Make the next decision before a drinking occasion: whether you want to drink at all, how you will keep track of the amount, and how you will get home. If you have tried to cut down and repeatedly exceed your plans, that is useful information to bring to a healthcare professional.[6][9]
If you have been drinking heavily for a prolonged period, seek medical advice before suddenly stopping. Withdrawal can be life-threatening. A clinician can help plan the change and prescribe medicines when needed to make withdrawal safer and less distressing.[6]
When Symptoms After Drinking Need Medical Care
A hangover is not a catch-all explanation for feeling ill after drinking. Your symptoms, drinking pattern, and any medicines or other drugs involved can change what care you need. Alcohol with opioids, sleep medicines, or some anxiety medicines can increase overdose risk.[3]
Hangover Versus Alcohol Withdrawal
Do not use “it gets better through the day” as a test that rules out withdrawal. Hangovers and withdrawal can share nausea, anxiety, sweating, and poor sleep. Withdrawal can develop after someone who has been drinking heavily for a prolonged period stops or reduces alcohol. Risk is not limited to people who describe their drinking as daily.[1][6][9]
Shakiness, a racing heart, trouble sleeping, or feeling ill when alcohol wears off are reasons to discuss possible withdrawal with a healthcare professional, especially after sustained heavy drinking. A seizure, severe confusion, or seeing or hearing things that are not there needs urgent medical help. Call 911 for a seizure or a person who is not responding normally.[3][9]
Medically supervised alcohol detox focuses on managing withdrawal and reducing its risks. Do not try to decide on a home alcohol taper from a symptom table or use morning drinks as treatment. Ask a clinician what level of monitoring you need, then plan ongoing support for the drinking pattern as well.[6][9]
Heart Palpitations When Hungover
Palpitations are a heartbeat that feels racing, pounding, fluttering, or as though it is skipping beats. Alcohol, lack of sleep, anxiety, and caffeine can trigger them. A heart rhythm problem can also cause palpitations, so the sensation alone cannot tell you what is happening.[4][5]
Heavy drinking can trigger a rhythm disturbance sometimes called “holiday heart.” It often involves atrial fibrillation, an irregular heart rhythm, and has been reported in people without known heart disease. This is one reason a new fluttering heartbeat after drinking deserves attention rather than being dismissed as dehydration.[11]
Call 911 if palpitations come with chest pain, difficulty breathing, or feeling faint or fainting. Do not drive yourself. Seek emergency care if palpitations are ongoing and do not go away. If an episode with those warning signs has stopped, still seek an urgent medical assessment.[4][5]
If palpitations keep returning, happen more often, or last longer than a few minutes, arrange a medical evaluation even if you otherwise feel well. Record when they occur, how long they last, and what you were doing. Mention alcohol, caffeine, medicines, and any personal or family heart history.[4][5]
Helping Someone with Possible Alcohol Poisoning
Alcohol poisoning occurs when enough alcohol reaches the bloodstream to interfere with functions such as breathing and temperature control. Someone can still be in danger after they stop drinking because alcohol can continue entering the bloodstream. Trouble waking, confusion, vomiting with reduced alertness, seizures, and slow or irregular breathing are warning signs.[3]
Call 911 for suspected poisoning and stay with the person. While waiting, help a vomiting person lean forward. If they are unconscious or lying down, roll them onto one side to help prevent choking. Tell responders what they drank and any other drugs or medicines involved, if known. Coffee, walking, and cold showers do not reverse an overdose.[3]
Do Frequent Hangovers Mean You Have a Drinking Problem?
A single hangover does not diagnose alcohol use disorder. Alcohol use disorder means difficulty stopping or controlling drinking despite harm to health, work, or relationships. Repeated mornings spent recovering, drinking more than planned, and continuing despite problems are reasons to look at the pattern.[9]
Hangovers also occur in people who are not dependent on alcohol. In one study, 78% of 95 nondependent volunteers reported at least one symptom after receiving alcohol through a vein in a supervised experiment.[12] That finding describes those volunteers, not the percentage of all drinkers who get hangovers. It shows why a hangover alone cannot tell you whether someone has dependence.[12]
Family history is relevant to the broader risk of alcohol use disorder, but it does not diagnose your situation. A more useful starting point is what drinking and recovery from drinking are costing you: missed work, lost weekends, arguments, or difficulty keeping promises to yourself.[9]
Why a Morning Drink Can Feel Like It Helps
A “hair of the dog” drink can temporarily reduce some hangover symptoms while prolonging the overall discomfort. If you repeatedly feel you need alcohol to steady yourself, discuss that pattern with a clinician. Feeling better after a drink is not proof that you have found a cure, and it may be important when assessing withdrawal.[1][9]
For a family member, a concrete observation can start the conversation without assigning a diagnosis: “You missed two mornings you wanted to spend with us. Would you be willing to talk with someone about your drinking?” This is a suggested conversation opener, not a patient account. Immediate medical symptoms take priority over that discussion.
Getting Help for Repeated Hangovers or Alcohol Addiction
You do not need to wait for a crisis to ask for help. An alcohol assessment can start with a conversation about how much and how often you drink, what happens when you cut back, and how drinking affects daily life. Bring your medicine list and describe any morning shaking, palpitations, or repeated need for another drink.[6][9]
Treatment can help people recover and stay in recovery. Medicines can help reduce drinking or support stopping. Counseling can help you practice coping skills and change drinking habits, while mutual-support groups offer support from other people working on similar changes. Care may be outpatient or inpatient, and the right approach depends on your needs.[9]
For example, you can ask, “Do I need medical help to stop drinking, and what support could help me avoid going back to the same pattern?” Withdrawal care and ongoing treatment answer different needs. A clinician can help you plan both without promising that any one option will work for everyone.[6][9]
If you are in crisis or thinking about suicide, call 988 or text 988 for the 988 Suicide & Crisis Lifeline in the United States.
When hangovers keep taking time from the life you want, the next step can be a conversation. Explore alcohol use disorder and recovery, or use treatment and support options to begin looking for care. Ask each provider about services, costs, and whether they can assess withdrawal risk.
Frequently Asked Questions About Hangovers
What Causes a Hangover?
A hangover has several contributors: fluid loss, stomach irritation, disrupted sleep, and the body’s response to alcohol and its breakdown. The brain’s adjustment as alcohol’s relaxing effects wear off can also leave you anxious. Dehydration explains part of the discomfort, but water does not address every cause.[1]
What Is the Best Cure for a Hangover?
Can I Take Tylenol® or Ibuprofen for a Hangover?
Be cautious with both. Alcohol combined with acetaminophen, or Tylenol, can harm the liver. Ibuprofen and aspirin can irritate your stomach. Ask a pharmacist or healthcare professional which medicine, if any, is appropriate given your recent drinking, health conditions, and other medicines. Do not treat a pain reliever as a hangover cure.[1][2]
Does Drinking Water Cure a Hangover?
Water can help with thirst after alcohol increases fluid loss, but it does not cure a hangover. Poor sleep, stomach irritation, and other effects also contribute. Research has not shown that adding electrolytes reduces hangover severity, so a sports drink is not a proven improvement over ordinary fluids for ending the hangover.[1]
Why Can Dark Drinks Cause Worse Hangovers?
Darker spirits such as bourbon tend to contain more congeners, substances made during fermentation that contribute flavor and smell. A study found worse reported hangovers after bourbon than vodka, but the beverage type did not change sleep or next-day mental performance. A milder-feeling hangover does not establish that driving is safe.[1][10]
How Long Does a Hangover Last?
Symptoms tend to peak when blood alcohol returns to about zero and can last 24 hours or longer. Feeling sober is different from having recovered your attention and coordination. Do not wait out severe symptoms on the assumption that they must be a hangover, especially if you recently reduced sustained heavy drinking.[1][6]
Why Is My Heart Racing When I Am Hungover?
Alcohol, poor sleep, anxiety, and caffeine can trigger palpitations, but a heart rhythm problem can also cause them. Palpitations with chest pain, trouble breathing, or feeling faint need emergency care: call 911. Seek emergency care for ongoing palpitations that do not go away, and arrange evaluation for recurring episodes.[4][5]
Why Does More Alcohol Seem to Help a Hangover?
Are Frequent Hangovers a Sign of a Drinking Problem?
Repeated hangovers are worth discussing, especially when recovering from drinking disrupts work, relationships, or responsibilities. They do not diagnose alcohol use disorder by themselves. Difficulty controlling drinking despite harm matters. An alcohol assessment can help you understand the pattern and plan support, including medical advice before suddenly stopping sustained heavy drinking.[6][9]
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