acid reflux at night
Informed by recognized medical guidance
Overview
Acid reflux happens when stomach acid flows back up into the tube that connects your mouth and stomach (the oesophagus). At night, lying down can make this worse, causing heartburn, coughing, or a sour taste.
Key facts
- Millions of people experience acid reflux, especially at night.
- Simple lifestyle changes often reduce symptoms.
- Frequent or severe reflux may need medical help.
Yes, occasional acid reflux is very common. About 1 in 5 adults in the UK have it at least once a week.
It can affect anyone, but it is more common in adults, pregnant women, people with excess weight, and smokers.
Symptoms
- Chest pain that feels heavy, crushing, or spreads to your jaw, arm, or back – this could be a heart attack
- Vomiting blood (bright red or like coffee grounds)
- Black, tarry, or bloody stools
- ⚠Pain or trouble when swallowing
- ⚠Unexplained weight loss
- ⚠Vomiting that won't stop
- ⚠Feeling like food is stuck in your chest
Common symptoms
- Heartburn – a burning feeling in the chest, often after eating or at night
- Regurgitation – a sour, bitter taste in the mouth
- Coughing or wheezing, especially when lying down
- Hoarse voice or sore throat in the morning
- Trouble sleeping or waking up choking
Symptoms in children
- Frequent spitting up or vomiting
- Coughing or gagging
- Poor appetite or fussiness during feeding
- Irritability or sleep problems
Symptoms in older adults
- Less typical heartburn – may feel like chest pain or indigestion
- Throat clearing, hoarseness, or a lump in the throat
- Difficulty swallowing (dysphagia)
- Unexplained weight loss or anemia
Causes
Main causes
- Weak or relaxed lower oesophageal sphincter (the valve between the stomach and oesophagus)
- Lying down too soon after eating
- Eating large meals, especially at night
- Certain foods and drinks: spicy, fatty, or acidic foods, chocolate, caffeine, alcohol
Risk factors
- Obesity or being overweight
- Pregnancy
- Smoking
- Hiatal hernia (when part of the stomach pushes up into the chest)
- Stress or lack of sleep
When to see a doctor
See a doctor urgently if:
- Difficulty swallowing or pain with swallowing
- Vomiting blood or black stools
- Unexplained weight loss
Book a routine appointment if:
- Heartburn more than twice a week
- Symptoms that disturb your sleep often
- Self-care measures aren't helping after 2 weeks
Diagnosis
Your doctor will ask about your symptoms and health history. They may perform or refer you for tests if symptoms are frequent or severe.
Tests that may be done
- pH monitoring – a thin tube placed in the oesophagus to measure acid levels over 24 hours
- Endoscopy – a camera on a flexible tube passed down your throat to see the lining of the oesophagus and stomach
- Barium swallow – you drink a chalky liquid and have X-rays to show reflux
What to expect at your appointment
Most tests are simple and not painful. Endoscopy is done with sedation to keep you comfortable. Your doctor will explain the results and next steps.
Treatment
Treatment usually starts with lifestyle changes and over-the-counter medicines. If needed, your doctor can prescribe stronger medications. Surgery is rarely required.
Self-care at home
- Eat smaller meals and avoid eating 3 hours before bed
- Raise the head of your bed by 15–20 cm (use blocks or a wedge pillow)
- Avoid trigger foods: spicy, fatty, acidic foods, chocolate, caffeine, alcohol
- Lose weight if you are overweight
- Quit smoking
Medical treatments
Doctors may recommend medicines that reduce stomach acid, such as antacids, histamine blockers, or proton pump inhibitors. Always talk to your doctor or pharmacist before starting any new medicine, especially for long-term use.
When is surgery considered?
Surgery, like fundoplication (wrapping the top of the stomach around the oesophagus), is only considered when other treatments don't work and symptoms are severe. Your specialist will discuss the risks and benefits.
Living with this condition
With simple habits, most people manage acid reflux well. Keep a food diary to spot triggers, and always carry antacids for sudden symptoms. Good sleep hygiene is key.
Lifestyle tips
- Sleep with your head and shoulders elevated
- Avoid tight belts or clothes around your waist
- Eat slowly and chew food well
- Manage stress with relaxation exercises or hobbies
Diet and exercise
Avoid large meals, especially at night. Choose lean proteins, vegetables, and whole grains. Gentle walking after meals can help, but avoid running or heavy lifting right after eating.
Mental health and emotional wellbeing
Chronic reflux can disturb sleep and cause anxiety. If you feel frustrated or worried, talk to your doctor. They can help you find ways to cope and improve your quality of life.
Prevention
You may not always prevent acid reflux, but healthy habits lower your risk. Avoid overeating, stay at a healthy weight, and don't lie down right after meals.
Complications
If left untreated
- Oesophagitis – inflammation that can cause pain or bleeding
- Oesophageal stricture – narrowing that makes swallowing difficult
- Barrett's oesophagus – changes in the lining that increase cancer risk (rare)
Long-term outlook
Most people with acid reflux control it well with lifestyle changes and safe medicines. With proper care, serious problems are uncommon. Talk to your doctor if you have concerns – they are there to help.
Find support
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 30, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.