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How Long Does a Hangover Last? Understanding Symptoms and Relief


Clinically Reviewed by: Charee Marquez, LMFT

How Long Does a Hangover Last?

Understanding how long a hangover lasts can be crucial for anyone who drinks alcohol. When a person drinks, the body processes alcohol in a way that can lead to a range of uncomfortable symptoms the next day. The duration and severity of these symptoms can vary based on several risk factors, such as how much alcohol was consumed, the type of alcoholic drinks, and individual health conditions. From dehydration symptoms to toxic byproducts, the body’s response to alcohol withdrawal can make hangover symptoms worse, especially after heavy drinking or consuming darker colored drinks like malt liquor and wine. Knowing how to reduce hangover symptoms and recognizing the signs of more severe hangovers can help manage the aftermath of drinking too much. Whether you have a drinking problem or are just curious about how to ease hangover symptoms, understanding the process can be beneficial.

What is a Hangover?

A hangover is a collection of unpleasant symptoms that occur after consuming excessive amounts of alcohol. These symptoms can include headache, nausea, dizziness, fatigue, sensitivity to light and sound, dehydration, and irritability. Hangovers result from the body’s reaction to alcohol, including dehydration, electrolyte imbalance, and the toxic effects of alcohol metabolism. They usually start several hours after drinking and can last up to 24 hours.


How Long Does a Hangover Last?

The duration of a hangover varies, generally lasting from a few hours to up to 24 hours. Mild symptoms like headache and fatigue might improve with hydration, rest, and food within a few hours. More severe symptoms, including nausea, dizziness, and sensitivity to light, can persist for a day. Factors influencing hangover duration include the amount and type of alcohol consumed, hydration levels, sleep quality, and individual tolerance. Drinks with congeners, like red wine and dark spirits, can cause worse hangovers. Dehydration and poor sleep intensify symptoms.

To alleviate a hangover, stay hydrated, rest, and eat a balanced meal. Over-the-counter pain relievers can help but should be used cautiously. If symptoms persist beyond 24 hours or are severe, consult a healthcare professional.


Types of Hangovers

Hangovers can be categorized into several types based on their symptoms and severity.

  1. Mild Hangover: Symptoms include slight headache, fatigue, and mild nausea. These usually improve with hydration, rest, and food within a few hours.
  2. Moderate Hangover: Symptoms such as headache, dizziness, nausea, and sensitivity to light and sound are more pronounced and can last most of the day.
  3. Severe Hangover: This includes severe headache, vomiting, muscle aches, and extreme sensitivity to light and sound, often lasting up to 24 hours and sometimes requiring medical attention.
  4. Delayed Hangover: Symptoms appear later than usual, sometimes a full day after drinking, and can be unexpected and severe.
  5. Emotional Hangover: Along with physical symptoms, this type includes feelings of anxiety, depression, and irritability, often due to the effects of alcohol on brain chemistry.


Causes of a Hangover

Hangovers are caused by several factors related to alcohol consumption:

  1. Dehydration: Alcohol is a diuretic, leading to increased urination and fluid loss, resulting in dehydration and contributing to symptoms like headache and dry mouth.
  2. Electrolyte Imbalance: Excessive drinking can disrupt the balance of electrolytes in the body, causing fatigue, weakness, and nausea.
  3. Gastrointestinal Irritation: Alcohol irritates the stomach lining, increasing acid production and leading to nausea, vomiting, and stomach pain.
  4. Blood Sugar Drop: Alcohol can cause a drop in blood sugar levels, leading to symptoms such as fatigue, weakness, and mood disturbances.
  5. Congeners: Byproducts of alcohol fermentation, especially in darker liquors like red wine and whiskey, can exacerbate hangover symptoms.
  6. Sleep Disruption: Alcohol affects sleep quality, leading to fatigue and grogginess the next day.
  7. Acetaldehyde Buildup: Alcohol is metabolized into acetaldehyde, a toxic compound that can cause headaches, nausea, and vomiting.


How Does a Hangover Work in the Brain and Body?

A hangover affects both the brain and body through several mechanisms:


How Long Does a Hangover Last? In the Brain

  1. Neurotransmitter Imbalance: A hangover is a milder form of alcohol withdrawal, which affects neurotransmitters like glutamate and GABA, disrupting brain function and causing mood disturbances, anxiety, and irritability.
  2. Dehydration and Electrolyte Imbalance: Dehydration affects brain function, leading to headaches and impaired cognitive abilities.
  3. Sleep Disruption: Alcohol interferes with REM sleep, resulting in poor sleep quality and contributing to fatigue and cognitive impairment.
  4. Acetaldehyde Toxicity: The breakdown of alcohol produces acetaldehyde, a toxic compound that can cause headaches, nausea, and other discomforts.


How the Body Processes Alcohol:

  1. Dehydration: Alcohol is a diuretic, increasing urine production and leading to dehydration, which causes symptoms like dry mouth, dizziness, and headache. Consuming alcoholic drinks can exacerbate dehydration and prolong hangover symptoms.
  2. Gastrointestinal Disturbances: Alcohol irritates the stomach lining and increases acid production, leading to nausea, vomiting, and stomach pain.
  3. Blood Sugar Drop: Alcohol can cause blood sugar levels to drop, resulting in fatigue, weakness, and mood disturbances.
  4. Inflammation: Alcohol consumption can trigger an inflammatory response, contributing to muscle aches and general discomfort.
  5. Electrolyte Imbalance: Excessive alcohol intake disrupts the balance of electrolytes, causing symptoms like weakness, fatigue, and muscle cramps.

These combined effects on the brain and body result in the common symptoms experienced during a hangover.


Side Effects and Risks

Unpleasant Symptoms of a Hangover:

Side Effects of a Hangover

A hangover can cause a range of unpleasant symptoms such as headache, fatigue, and nausea.

  1. Headache
  2. Fatigue
  3. Nausea and Vomiting
  4. Dizziness
  5. Sensitivity to Light and Sound
  6. Dry Mouth
  7. Muscle Aches
  8. Mood Disturbances
  9. Difficulty Concentrating

Risks of Frequent Alcohol Consumption:

  1. Chronic Dehydration: Leading to kidney issues.
  2. Gastrointestinal Problems: Increased risk of ulcers and gastritis.
  3. Liver Damage: Over time, excessive alcohol consumption can cause liver disease.
  4. Heart Problems: Increased risk of high blood pressure and heart disease.
  5. Mental Health Issues: Higher risk of depression, anxiety, and other mental health disorders.
  6. Addiction: Increased likelihood of developing alcohol dependence or addiction.

Drinking too much alcohol can make a hangover worse and increase the risk of chronic health issues.


Hangover Remedies

Here are some effective hangover remedies:

  1. Hydrate: Drink plenty of water or electrolyte-rich beverages like sports drinks or coconut water to rehydrate and replace lost electrolytes.
  2. Rest: Get plenty of sleep to help your body recover.
  3. Eat a Nutritious Meal: Consume foods rich in carbohydrates and proteins to stabilize blood sugar levels and replenish nutrients. Bananas, toast, and eggs are good options.
  4. Pain Relievers: Use over-the-counter pain relievers like ibuprofen or aspirin to alleviate headache and muscle aches (use cautiously to avoid stomach irritation).
  5. Ginger or Peppermint Tea: These natural remedies can help soothe nausea and digestive upset.
  6. Vitamin B and C: Supplements or foods rich in these vitamins can help replenish lost nutrients and support recovery.
  7. Avoid Alcohol: Do not consume more alcohol (“hair of the dog”) as it can worsen and prolong hangover symptoms.
  8. Cool Compress: Apply a cool compress to your forehead to help reduce headache and discomfort.
  9. Light Exercise: Gentle activities like walking can boost circulation and help you feel better, but avoid strenuous exercise.


Hangover Prevention

Drink in Moderation: Limit your alcohol intake to avoid excessive consumption.

Stay Hydrated: Drink water before, during, and after drinking alcohol.

Eat Before and During Drinking: Consume a balanced meal before drinking and snack on food while drinking to slow alcohol absorption.

Choose Drinks Wisely: Opt for lighter-colored drinks, as they typically contain fewer congeners.

Pace Yourself: Sip drinks slowly and avoid drinking too quickly.

Avoid Mixing Alcohols: Stick to one type of alcohol to minimize hangover risk.

Take Vitamin Supplements: Consider taking vitamin B and C supplements before drinking to help your body process alcohol.


How to Know if You Have a Substance Abuse Problem

To know if you have a substance abuse problem, look for these signs:

  1. Inability to Limit Use: Difficulty controlling the amount and frequency of substance use.
  2. Neglecting Responsibilities: Failing to fulfill obligations at work, school, or home due to substance use.
  3. Increased Tolerance: Needing more of the substance to achieve the same effect.
  4. Withdrawal Symptoms: Experiencing physical or emotional symptoms when not using the substance.
  5. Continued Use Despite Problems: Using the substance even when it causes personal, professional, or health issues.
  6. Loss of Interest: Losing interest in activities once enjoyed.
  7. Preoccupation with Substance: Spending a lot of time obtaining, using, or recovering from the substance.

If you recognize these signs, consider seeking help from a healthcare professional or addiction specialist.


How Long do Substances Stay in Your System?

The duration substances stay in your system varies:

  1. Alcohol: 12-24 hours
  2. Marijuana: 1-30 days (depending on usage frequency)
  3. Cocaine: 1-4 days
  4. Heroin: 1-3 days
  5. Methamphetamine: 2-4 days
  6. LSD: Up to 24 hours
  7. Ecstasy (MDMA): 1-3 days
  8. Benzodiazepines: 3-6 weeks (for long-term users)
  9. Nicotine: 1-3 days

Detection times can vary based on factors like metabolism, dosage, frequency of use, and the type of drug test used.


Addiction Treatment Options

Diagnosis involves a doctor’s assessment, probing medical history, and symptoms, coupled with blood or urine tests.

Prescription medication addiction is a complex and challenging condition that demands a multifaceted approach to facilitate recovery. A tailored treatment plan, often involving various therapeutic modalities, is crucial to address the physical, psychological, and behavioral aspects of addiction. Here, we explore comprehensive treatment options designed to guide individuals towards a path of sustained recovery.

  1. Detoxification** (Detox):**
  • Purpose: The initial step in treatment involves removing the addictive substance from the body, allowing for the alleviation of physical dependence.
  • Method: Detoxification can occur through abrupt cessation or tapering, with medical supervision to manage withdrawal symptoms.
  • Duration: Typically, detox lasts 3-7 days, though individual factors may influence the duration.
  1. Medication-Assisted Treatment (MAT):
  • Purpose: Medications are employed to aid in managing withdrawal symptoms, reducing cravings, and supporting recovery.
  • Examples:
  • Stimulant Abuse: No specific medications, but symptomatic treatment may be provided.
  • Opioid Abuse: Medications like buprenorphine, methadone, or naltrexone can be utilized.
  • CNS Depressant Abuse: Tapering off medications and symptom management.
  1. Inpatient Rehabilitation (Residential Treatment):
  • Purpose: Inpatient rehab provides a structured environment for intensive treatment, offering a supportive setting for individuals to focus solely on recovery.
  • Components:
  • Counseling: Individual and group therapy sessions to address underlying issues and develop coping strategies.
  • Medical Monitoring: Continuous medical supervision to manage physical and mental health.
  • Support Groups: Interaction with peers facing similar challenges.
  1. Outpatient Rehabilitation:
  • Purpose: Allows individuals to receive treatment while living at home, offering flexibility for those with significant external responsibilities.
  • Components:
  • Individual Counseling: Targeted sessions to explore personal challenges and promote behavioral changes.
  • Group Therapy: Collaborative sessions to share experiences, provide support, and foster a sense of community.
  • Medication Management: Monitoring and adjustment of medications as needed.
  1. Cognitive Behavioral Therapy (CBT):
  • Purpose: A widely utilized therapeutic approach to address negative thought patterns and behaviors associated with addiction.
  • Focus Areas:
  • Identifying Triggers: Recognizing situations or emotions that may lead to substance abuse.
  • Skill Development: Acquiring coping mechanisms and strategies to navigate challenges.
  • Relapse Prevention: Equipping individuals to avert relapse and sustain recovery.
  1. Support Groups:
  • Purpose: Engaging in support groups provides a sense of community and shared understanding, reducing feelings of isolation.
  • Examples:
  • 12-Step Programs: Such as Narcotics Anonymous (NA) or Alcoholics Anonymous (AA).
  • SMART Recovery: Incorporating self-empowerment and cognitive-behavioral techniques.
  1. Counseling and Psychotherapy:
  • Purpose: Addressing the underlying emotional and psychological factors contributing to addiction.
  • Modalities:
  • Individual Therapy: One-on-one sessions to explore personal challenges and promote self-awareness.
  • Family Therapy: Involving family members to enhance support systems and address familial dynamics.
  • Holistic Therapies: Art therapy, yoga, mindfulness, or other complementary approaches.
  1. Aftercare Planning:
  • Purpose: Preparing individuals for the challenges of post-treatment life and supporting continued recovery.
  • Components:
  • Continued Counseling: Scheduled sessions to monitor progress and address emerging challenges.
  • Support Group Participation: Encouraging ongoing involvement in support groups.
  • Relapse Prevention Strategies: Equipping individuals with tools to navigate potential triggers.


Does Insurance Cover Substance Abuse Treatment?

Yes, many insurance plans do cover substance abuse treatment. Coverage typically includes a range of services such as detoxification, inpatient and outpatient rehabilitation, counseling, and therapy. The specifics of coverage can vary depending on the insurance provider and the policy. It’s important to check with your insurance company to understand the details of your coverage, including any copayments, deductibles, and the network of approved treatment providers. If you have questions or need assistance, contacting your insurance provider directly can provide clarity on what is covered under your plan.


Common Insurance Plans Used for Addiction

Common insurance plans used for addiction treatment include:

  1. Medicare: Provides coverage for substance abuse treatment for individuals aged 65 and older or those with certain disabilities.
  2. Medicaid: Offers coverage for low-income individuals, including various addiction treatment services.
  3. Employer-Sponsored Insurance: Many employer-provided health insurance plans include coverage for addiction treatment.
  4. Private Insurance: Individual health insurance plans often cover substance abuse treatment; coverage details vary by provider.
  5. Affordable Care Act (ACA) Plans: Marketplace plans under the ACA must include coverage for mental health and substance use disorders as essential health benefits.
  6. Military Insurance (TRICARE): Offers coverage for service members, retirees, and their families, including addiction treatment services.



Hangovers can vary widely in their duration and severity, influenced by factors such as how much alcohol is consumed, the type of alcoholic beverages, and individual health conditions. Severe hangovers can lead to dehydration symptoms, upset stomach, and even low body temperature. Recognizing the symptoms and knowing how to reduce nausea, stop drinking early, and manage hangover cures like drinking water or fruit juice can make a significant difference. If hangovers begin to interfere with daily life, or if there are signs of alcohol use disorder or alcohol poisoning, it’s essential to seek help. By understanding the body processes alcohol and the impact of drinking heavily, you can take steps to ensure that your consumption of alcoholic drinks doesn’t lead to dangerous consequences. Remember, drinking plenty of water, avoiding an empty stomach, and being mindful of your family history and drinking habits can help reduce the risk of hangovers and maintain a healthier relationship with alcohol.


Seeking Treatment for Alcohol Use Disorder? We Can Help!

At California Prime Recovery, we offer comprehensive alcohol rehabilitation programs to support your journey towards lasting well-being. As an in-network provider, we work with most insurance plans, such as:


Hangover Prevention

The best way to prevent a hangover is to drink alcohol in moderation or not at all. The more a person drinks, the greater their chance of experiencing a hangover. If you or a loved one are struggling with mental health challenges or substance abuse, reach out to California Prime Recovery today. Our team of compassionate professionals is here to support your journey towards lasting well-being. Give us a call at 866-208-2390


  • Most insurance plans, including private, employer-sponsored, Medicare, Medicaid, and ACA marketplace plans, provide coverage for addiction treatment. Check with your provider for specifics.
  • Insurance typically covers a range of treatments, including detoxification, inpatient and outpatient rehab, counseling, therapy, medication-assisted treatment, and follow-up care.
  • Yes, there may be copayments, deductibles, and coinsurance costs. These out-of-pocket expenses vary by plan and provider, so review your insurance policy or contact your insurer for details.
  • Your insurance company can provide a list of in-network providers. You can also check their website or contact customer service for assistance in finding approved treatment facilities.
  • Some insurance plans require pre-authorization for addiction treatment services. It’s important to check with your insurer to understand any pre-authorization requirements and avoid unexpected expenses.

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