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Health condition · Clinically reviewed

Hiccups, when they linger, and how to stop them.

Most hiccup bouts are harmless. Anything lasting more than 48 hours is not - and there is a clear, treatable path once the driver is found.

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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

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

  • 03

    Current for 2026

    Reflects modern UK practice on persistent and intractable hiccups, including baclofen and chlorpromazine.

Key facts

Hiccups at a glance.

The essentials, in plain English - what they are, the three duration bands and how each is treated in the UK today.

  • What it is

    Singultus - involuntary spasmodic contraction of the diaphragm and inspiratory muscles, followed by abrupt glottic closure that produces the classic "hic".

  • Acute

    Lasts under 48 hours - almost always benign and self-limiting. Gastric distension, fizzy drinks, alcohol, hot-then-cold, emotion and smoking are typical triggers.

  • Persistent

    More than 48 hours but under a month - deserves investigation for an underlying cause along the vagus, phrenic or central nervous pathway.

  • Intractable

    More than a month - can disturb sleep, eating and mood, and needs a specialist plan and often combination therapy.

  • First-line drug

    Baclofen is the most commonly used first-line agent in the UK - a GABA-B agonist with the best evidence in persistent hiccups.

  • Only licensed drug

    Chlorpromazine is the only medication licensed for intractable hiccups - a dopamine antagonist reserved for resistant cases.

Why this guide matters

The 48-hour rule that changes everything.

Almost everyone has hiccups; almost no one needs treatment. But once a bout lasts beyond 48 hours the questions - and the answers - change entirely.

  • Acute hiccups are almost always benign

    A minutes-to-hours bout after a fizzy drink, a rushed meal or a shift in temperature will settle on its own or with a simple manoeuvre.

  • Persistent hiccups deserve investigation

    Beyond 48 hours the question is what is driving them - along the vagus nerve, phrenic pathway, brainstem or metabolic axis.

  • Intractable hiccups respond to treatment

    Even bouts lasting weeks or months usually settle with the right combination of baclofen, chlorpromazine and treatment of the underlying cause.

How the diagnosis is made

From "just hiccups" to a working diagnosis.

The steps a UK GP or specialist will normally follow when hiccups have outstayed their welcome, in the usual order.

  1. 01

    Assessing

    Timing and pattern

    How long, how often, day or night, and whether they wake you - this alone separates acute from persistent from intractable.

  2. 02

    Assessing

    Associated symptoms

    Reflux, dysphagia, weight loss, neurological change, headache or chest symptoms all point to specific causes.

  3. 03

    Assessing

    Medication and lifestyle review

    Steroids, benzodiazepines, dopamine antagonists, chemotherapy and alcohol can all trigger persistent hiccups.

  4. 04

    Confirming

    Focused examination

    Neurology, chest, abdomen and neck - looking for a goitre, mediastinal signs, hepatomegaly or focal deficit.

  5. 05

    Confirming

    Bloods and basic tests

    U&Es, LFTs, calcium and glucose to screen for uraemia, electrolyte and metabolic drivers.

  6. 06

    Locating

    Chest and abdominal imaging

    Chest X-ray, then CT chest and abdomen if red flags - looking for mediastinal or subdiaphragmatic causes.

  7. 07

    Locating

    MRI brain and endoscopy

    MRI brain for suspected CNS cause; endoscopy for reflux, oesophagitis or suspected tumour. Specialist input from here on.

Typical timeline: first visit to a working plan in a couple of weeks.

Symptoms

What persistent hiccups actually feel like.

The rhythmic sound is the obvious feature. The knock-on effects on sleep, eating and mood are often what tips someone into seeking help.

  • Rhythmic "hic" sound

    The classic sudden inspiration cut off by glottic closure - typically 4 to 60 times a minute.

  • Diaphragmatic jerk

    A visible or felt jolt across the upper abdomen and lower chest with every hiccup.

  • Bloating and belching

    Gastric distension both triggers and worsens hiccups - reflux and belching often travel with them.

  • Sleep disturbance

    Intractable hiccups that persist into sleep are exhausting and a strong reason to escalate treatment.

  • Weight loss and dehydration

    Prolonged hiccups can interfere with eating and drinking - a red flag in the elderly or unwell.

  • Reflux and heartburn

    Gastro-oesophageal reflux is one of the commonest treatable drivers of persistent hiccups.

  • Neurological symptoms

    Headache, weakness, visual change or unsteadiness alongside hiccups points urgently at a central cause.

  • Red flag - over 48 hours

    Hiccups that last beyond 48 hours are not "just hiccups" - they deserve a proper look for an underlying cause.

Treatment

How hiccups are treated in the UK.

Non-drug manoeuvres for acute bouts, treatment of the underlying driver, and a stepped drug ladder for persistent and intractable cases.

  • Non-pharmacological manoeuvres

    Breath-holding, Valsalva, drinking cold water, a teaspoon of sugar under the tongue and rebreathing into a paper bag - safe first steps for acute hiccups.

  • Treat the trigger

    Slow eating, avoid fizzy drinks and alcohol, stop smoking and treat reflux - simple lifestyle steps often settle recurrent bouts.

  • Baclofen

    GABA-B agonist and the usual UK first-line for persistent hiccups - started low and titrated, with caution in older or renally impaired patients.

  • Chlorpromazine

    The only medication licensed in the UK for intractable hiccups - a dopamine antagonist reserved for resistant cases, with sedation and postural drop as limits.

  • Metoclopramide or domperidone

    Prokinetics useful when gastric stasis or reflux is a clear driver - short courses only because of neurological and cardiac cautions.

  • Gabapentin or pregabalin

    A useful add-on where baclofen alone is not enough, particularly with neuropathic or post-stroke hiccups.

  • Nerve block

    A phrenic nerve block, delivered by a specialist pain team, can settle truly intractable hiccups when drugs have failed.

  • Phrenic nerve stimulator

    Surgical modulation of the phrenic nerve - a last-resort option for a very small number of patients, in tertiary centres only.

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 specialist knows your history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE CKS. Hiccups.

  • British National Formulary (BNF). Chlorpromazine and baclofen prescribing notes.

  • Palliative Care Formulary (PCF). Hiccups - stepwise management.

  • Peer-reviewed reviews on persistent and intractable singultus.

Red flags

When hiccups need urgent attention.

Most bouts settle on their own. These features change that - and are worth acting on.

  • Duration over 48 hours

    Any hiccup bout that lasts longer than 48 hours needs a GP review to look for an underlying cause.

  • Weight loss or dysphagia

    Hiccups with unintentional weight loss, difficulty swallowing or food sticking need urgent assessment for oesophageal or mediastinal pathology.

  • Neurological symptoms

    New headache, weakness, unsteadiness, visual or speech change alongside hiccups points to a central nervous cause - seek urgent care.

  • Chest pain or breathlessness

    Hiccups with chest pain, breathlessness or a hoarse voice may signal a mediastinal or cardiac driver and need same-day review.

  • Hiccups after head injury or stroke

    New persistent hiccups following head trauma or a suspected stroke need urgent neurological assessment.

  • Neck swelling or goitre

    A visible neck swelling with new hiccups can reflect thyroid pathology pressing on the phrenic pathway.

  • Cancer diagnosis

    In anyone with a known cancer, new persistent hiccups deserve a specialist review - they can reflect disease or its treatment.

  • Suspected drug cause

    Recent steroids, benzodiazepines, dopamine antagonists or chemotherapy - review with the prescriber before stopping anything.

  • Sleep loss and dehydration

    Hiccups that stop you sleeping, eating or drinking are an emergency in the frail or elderly - do not wait it out.

Living with it

Treatable, once you know the driver.

Four practical things that make the biggest difference - trigger awareness, treating reflux, protecting sleep and knowing when to escalate.

A quiet reminder

Persistent hiccups are not a personality trait.

If they have outstayed 48 hours, or are stopping you living your life, there is usually a treatable driver behind them.

  1. 01 Trigger

    Know your triggers

    Fizzy drinks, alcohol, hot-then-cold food, big meals and rushing to eat all set hiccups off. Slow down and space meals.

  2. 02 Reflux

    Treat reflux properly

    If heartburn travels with your hiccups, a proper reflux plan often settles both. See our reflux guide for the steps.

  3. 03 Sleep

    Protect sleep

    Intractable hiccups that break sleep are a strong reason to escalate treatment - do not soldier on for weeks.

  4. 04 Escalate

    Do not "wait it out"

    Anything beyond 48 hours deserves a GP review. Persistent hiccups are treatable once the driver is found.

Frequently asked

Everything we get asked about hiccups.

Quick answers on causes, home manoeuvres, first-line drugs and when to seek help.

  • Why do we hiccup?

    Hiccups are an involuntary reflex - a sudden contraction of the diaphragm and inspiratory muscles followed by abrupt closure of the glottis, producing the classic sound. The reflex arc involves the phrenic and vagus nerves and a central "hiccup centre" in the brainstem. Its purpose is not fully understood.

  • How long is too long for hiccups?

    Acute hiccups lasting minutes to hours are almost always harmless. If a bout lasts more than 48 hours it is called persistent and deserves a proper look for an underlying cause. Beyond a month it is called intractable and needs specialist input.

  • What actually works for a normal hiccup attack?

    Simple manoeuvres are supported by tradition rather than trials. Breath-holding, a slow Valsalva, sipping cold water, a teaspoon of sugar under the tongue and rebreathing gently into a paper bag are all reasonable. Avoid pressing on the eyeballs.

  • What causes persistent hiccups?

    Common drivers include gastro-oesophageal reflux, hiatus hernia, a subphrenic abscess, hepatomegaly, thyroid disease and mediastinal masses. Central causes include stroke, tumour, MS and encephalitis. Metabolic upsets and certain medications - including steroids, benzodiazepines and chemotherapy - are also recognised.

  • Which medication is used first?

    In the UK, baclofen is usually tried first for persistent hiccups. Chlorpromazine is the only medication licensed for the indication and tends to be reserved for intractable cases. Metoclopramide, domperidone, gabapentin and pregabalin are also used depending on the likely driver.

  • When should I see a doctor?

    See a GP if hiccups last more than 48 hours, disturb sleep or eating, or come with weight loss, difficulty swallowing, chest pain, breathlessness or new neurological symptoms. Urgent review is warranted after a head injury, suspected stroke or in anyone with a known cancer.

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