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Health condition

Hangovers, what actually helps and when it means more.

Veisalgia is not just dehydration. It is inflammation, gastritis, disrupted sleep and acetaldehyde all at once - and recurrent hangovers are worth taking seriously.

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Why trust this guide

  • 01

    Editorial team

    Written by our editorial team from the UK sources listed on each page.

  • 02

    Sourced from guidance

    Checked against NICE, RCP and peer-reviewed sources you can see at the end.

  • 03

    Current for 2026

    Reflects current UK guidance including AUDIT screening, Wernicke prevention and alcohol services referral.

Key facts

Hangovers at a glance.

The essentials in plain English - what it is, why it happens and what actually helps.

  • What it is

    Veisalgia - the multi-system symptom complex that follows alcohol consumption, driven by dehydration, inflammation, acetaldehyde toxicity and sleep disruption.

  • How common

    Very common in adults who drink. Severity rises with quantity, congener content and how quickly alcohol is consumed.

  • Why it happens

    Dehydration, hypoglycaemia, electrolyte imbalance, gastritis, inflammatory cytokines, acetaldehyde and disrupted sleep all overlap.

  • The core treatment

    Rest, oral rehydration with electrolytes, simple carbohydrates and paracetamol - used cautiously and never in heavy drinkers.

  • What to avoid

    NSAIDs during an acute hangover (gastritis), paracetamol in heavy drinkers (liver risk) and hair of the dog (perpetuates the cycle).

  • The bigger question

    Recurrent hangovers are often a marker of alcohol use disorder - AUDIT screening and referral matter more than the morning after.

Why this guide matters

More than a bad morning.

Hangovers are common, mostly self-limiting and manageable at home. But they are also one of the clearest opportunities to have an honest conversation about alcohol.

  • Hydration and rest are the mainstay

    Oral rehydration with electrolytes, simple carbohydrates and sleep. Simple things, done properly, help most people.

  • Avoid the wrong analgesic

    NSAIDs worsen gastritis in the acute phase. Paracetamol is not safe in heavy drinkers. Pick the right tool for the right person.

  • Recurrent hangovers are a signal

    AUDIT screening and a conversation about alcohol use disorder matter more than any morning-after remedy.

How the assessment is made

From a rough morning to the right plan.

The steps a UK GP or specialist alcohol service will follow - so you know what to expect.

  1. 01

    Assessing

    Alcohol history

    Quantity, type (wine and spirits carry more congeners), timing, food eaten and hydration alongside the drinking.

  2. 02

    Assessing

    Medication and comorbidity

    Review medications (paracetamol, sedatives, antidepressants) and comorbidities that change risk - liver disease, diabetes, epilepsy.

  3. 03

    Assessing

    AUDIT screening

    A short validated questionnaire that flags hazardous, harmful or dependent drinking - see our alcohol use disorder guide for the full pathway.

  4. 04

    Confirming

    Rule out mimics

    Hypoglycaemia, medication interaction, meningitis, subarachnoid haemorrhage and drug-induced symptoms can all mimic a hangover.

  5. 05

    Confirming

    Bloods where indicated

    LFTs, FBC, U&E and glucose if drinking is heavy, recurrent or the presentation is atypical.

  6. 06

    Preparing

    Specialist review

    Recurrent, severe or complicated hangovers - or evidence of dependence - warrant a specialist alcohol service referral.

  7. 07

    Preparing

    Wernicke prevention

    For heavy drinkers or those with poor nutrition, IV or IM Pabrinex prevents Wernicke-Korsakoff syndrome and belongs in the plan early.

Typical timeline: an acute hangover settles in 24 hours - the conversation it opens can last much longer.

Symptoms

What a hangover actually feels like.

A cluster of overlapping symptoms - and the features that mean it might be more than veisalgia.

  • Headache

    Usually throbbing and generalised - driven by dehydration, vasodilation and inflammatory cytokines.

  • Thirst and dry mouth

    Alcohol suppresses ADH - net fluid loss and electrolyte shift give that classic parched feeling.

  • Fatigue and weakness

    Poor sleep quality, low blood glucose and inflammation all contribute to next-day exhaustion.

  • Nausea and vomiting

    Alcohol-induced gastritis, acetaldehyde toxicity and delayed gastric emptying combine.

  • Tremor and irritability

    Autonomic overactivity as blood alcohol falls - can be marked in regular heavy drinkers.

  • Poor concentration

    Cognitive slowing, slower reaction times and low mood are common and can persist into the afternoon.

  • Light and noise sensitivity

    A migraine-like feature that reflects central sensitisation and inflammation.

  • Red flag - severe or atypical

    Confusion, focal neurology, severe abdominal pain, chest pain or seizure needs urgent assessment - not a hangover.

Treatment

How hangovers are managed in the UK.

Supportive care first, careful choice of analgesia, thiamine for regular drinkers - and a proper conversation about alcohol when it is warranted.

  • Rest and simple carbohydrates

    Sleep, quiet, and a bland carbohydrate meal help restore glucose and settle nausea. The evidence is modest but the risk is nil.

  • Oral rehydration

    Isotonic fluids with electrolytes work better than plain water. Small, frequent sips are kinder to a nauseated stomach.

  • Paracetamol (with caution)

    Reasonable at standard doses in occasional drinkers. Avoid in heavy or regular drinkers - the liver injury risk is potentiated.

  • NSAIDs - after the acute phase

    Ibuprofen can help residual headache once gastritis has settled - PPI cover is sensible in higher-risk patients.

  • Cautious caffeine

    A small coffee can help headache and alertness but too much worsens dehydration and anxiety.

  • Vitamin B complex and thiamine

    Especially for regular drinkers - thiamine (oral or parenteral) prevents Wernicke-Korsakoff syndrome.

  • Emerging options

    N-acetylcysteine, prickly pear extract and others have limited evidence - not routinely recommended.

  • Alcohol services referral

    For recurrent or dependent drinking - Change Grow Live, We Are With You and NHS alcohol services offer structured support.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and specialist society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or alcohol service knows your history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE. Alcohol-use disorders: diagnosis, assessment and management (CG115).

  • NICE. Alcohol-use disorders: prevention (PH24).

  • Royal College of Physicians. Guidance on parenteral thiamine (Pabrinex) for at-risk drinkers.

  • BMJ Best Practice. Alcohol intoxication and hangover management.

Red flags

When it is not just a hangover.

Most hangovers settle at home. These are the situations that need urgent assessment - and the ones that need a longer conversation.

  • Confusion or altered consciousness

    Not a hangover - consider Wernicke encephalopathy, head injury, hypoglycaemia or intoxication. Needs urgent assessment.

  • Focal neurology or thunderclap headache

    Sudden severe headache, weakness or speech change - subarachnoid haemorrhage and stroke must be excluded.

  • Seizure

    A first seizure after a heavy binge, or during withdrawal in a regular drinker, needs emergency review.

  • Severe abdominal or chest pain

    Pancreatitis, upper GI bleed, cardiac events and Mallory-Weiss tears can all present after heavy drinking.

  • Persistent vomiting

    Beyond the first day, or with blood, needs assessment - risk of dehydration, electrolyte disturbance and oesophageal injury.

  • Jaundice or dark urine

    A signal of liver injury or haemolysis - urgent GP or hospital review.

  • Withdrawal features

    Tremor, sweating, agitation or hallucinations after stopping alcohol needs a supervised detox plan - never stop suddenly if drinking is heavy.

  • Recurrent hangovers

    A red flag for alcohol use disorder in its own right - see our alcohol use disorder guide for the AUDIT pathway.

  • Pregnancy or planning pregnancy

    No safe level of alcohol in pregnancy - a hangover conversation is a good moment to discuss support.

Living with it

Prevention beats any morning-after remedy.

Four practical habits that make the biggest difference - eat before and during, pace yourself, choose your drinks and know your limits.

A quiet reminder

Recurrent hangovers deserve a proper conversation.

If mornings after keep happening, it is worth an honest look at drinking patterns - and there is real support available.

  1. 01 Prevent

    Eat before and during

    A proper meal slows alcohol absorption and reduces the next-day hit. Snacking through the evening helps too.

  2. 02 Pace

    Alternate with water

    A glass of water between drinks addresses dehydration in real time - far more effective than trying to fix it in the morning.

  3. 03 Choose

    Mind the congeners

    Darker spirits and heavy red wines carry more congeners and hit harder. Clearer drinks tend to cause milder hangovers.

  4. 04 Reflect

    Know your limits

    UK guidance is no more than 14 units a week, spread across several days with drink-free days. Regular hangovers deserve a proper conversation.

Frequently asked

Everything we get asked about hangovers.

Quick answers on rehydration, analgesia, hair of the dog and when a hangover means something more.

  • What actually causes a hangover?

    A cluster of things at once - dehydration and electrolyte loss from suppressed ADH, low blood glucose, gastritis, inflammatory cytokines, acetaldehyde toxicity, disrupted sleep and vasodilation. Congeners (found more in wine and dark spirits) add to it.

  • Is paracetamol safe for a hangover?

    At standard doses in occasional drinkers - usually yes. In heavy or regular drinkers the risk of liver injury is meaningfully higher and paracetamol should be avoided. NSAIDs like ibuprofen are best avoided during acute nausea because of gastritis, but can help residual headache once symptoms have settled.

  • Does hair of the dog work?

    It briefly masks symptoms because the withdrawal component eases, but it does not treat the underlying dehydration, gastritis or inflammation. It perpetuates the cycle and is not recommended - especially in anyone with regular or heavy drinking.

  • What should I drink to rehydrate?

    Oral rehydration solutions or isotonic drinks with electrolytes work better than plain water alone. Small, frequent sips are kinder to a nauseated stomach. A simple bland meal with carbohydrates helps restore glucose.

  • When is a hangover a red flag?

    Confusion, seizure, thunderclap or severe headache, focal neurology, severe abdominal or chest pain, jaundice, persistent vomiting or blood in vomit are not hangovers - they need urgent assessment. Withdrawal features (tremor, sweating, hallucinations) after stopping alcohol also need medical review.

  • Should I be screened for alcohol use disorder?

    If hangovers are recurrent, if you drink daily, if you have tried to cut down and struggled, or if drinking is affecting work, mood or relationships - yes. The AUDIT questionnaire is a short, validated screening tool. See our alcohol use disorder guide for the pathway and support options.

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