Acid reflux happens when stomach contents flow back up into the food pipe (oesophagus), causing a burning feeling behind the breastbone. When it happens often, at least twice a week, or causes damage, it is called gastroesophageal reflux disease (GERD). Reflux can cause chest pain that feels frighteningly like a heart problem, so this guide explains how to tell the difference, which foods and habits make it worse, and how it is treated.
Quick answer: The main symptoms of GERD are heartburn (burning chest pain after meals or when lying down) and regurgitation of sour fluid into the mouth. Smaller meals, not eating for 2 to 3 hours before bed, raising the head of the bed, losing excess weight, and cutting down on fried and spicy food, tea, coffee, alcohol and smoking help most people. Medicines such as antacids and proton pump inhibitors (PPIs) relieve symptoms. Never assume chest pain is acidity without ruling out the heart, especially if you are over 40, diabetic, a smoker, or the pain comes with exertion or sweating.
Key takeaways
- ✅ Heartburn after meals and sour burps are typical; chest pain with breathlessness or sweating is an emergency until proven otherwise.
- ✅ Lifestyle changes work for many people and make medicines work better.
- ✅ Difficulty swallowing, weight loss, vomiting blood or black stools need prompt investigation.
- ✅ Long-term acid-suppressing medicine should be reviewed with a doctor.
Symptoms of GERD
- Heartburn: burning pain behind the breastbone, often after meals, on bending or lying down
- Regurgitation: sour or bitter fluid coming up into the throat or mouth
- Chest pain that is burning or pressing, and improves with antacids
- Belching, bloating and feeling full quickly
- Hoarse voice, sore throat, chronic dry cough or worsening asthma at night
- Bad taste in the mouth or bad breath, and wearing of tooth enamel
Acid reflux chest pain or heart pain?
| Clues that point to reflux | Warning signs that point to the heart |
|---|
| Burning pain after meals or when lying flat | Pressure, squeezing or heaviness in the chest |
| Sour taste, burping, relief with antacids | Pain spreading to the arm, jaw, neck or back |
| Not linked to exertion | Comes on with walking, climbing stairs or stress |
| No sweating or breathlessness | Sweating, breathlessness, nausea, dizziness or fainting |
If in doubt, treat chest pain as a heart problem. Call an ambulance (108) or go to the nearest emergency department for an ECG. Heart attacks in people with diabetes, women and older adults can feel like "gas" or indigestion.
What causes acid reflux?
A ring of muscle at the lower end of the food pipe (the lower oesophageal sphincter) normally keeps stomach acid down. Reflux happens when this muscle relaxes at the wrong time or is weak. Common triggers and risk factors are:
- Large, late or fatty meals, and lying down soon after eating
- Excess weight, especially around the waist, and pregnancy
- Hiatus hernia, where part of the stomach slides up into the chest
- Smoking and alcohol
- Some medicines: painkillers (NSAIDs), certain BP and asthma medicines, and some sleeping pills
Foods to limit in GERD
| Often worsen reflux | Usually easier on the stomach |
|---|
| Fried and oily food, pakoras, samosas | Steamed, boiled or grilled food: idli, dal, khichdi |
| Very spicy curries, pickles, chillies | Mildly spiced vegetables |
| Tea, coffee, colas and fizzy drinks | Water, buttermilk, coconut water |
| Chocolate, peppermint, citrus juices, tomato-heavy gravies | Banana, papaya, apple, oats |
| Alcohol | Lean protein such as fish, chicken, paneer and curd |
Triggers vary from person to person, so a short food diary helps you find yours.
Dyspepsia (indigestion)
Dyspepsia means pain or discomfort in the upper abdomen, early fullness or bloating after meals. It overlaps with GERD and can be caused by gastritis, ulcers, H. pylori infection, painkillers, gallstones, or no clear cause (functional dyspepsia). Testing for H. pylori and treating it can help, and persistent symptoms may need an endoscopy.
Tests for GERD
Most people are diagnosed from their symptoms and a trial of treatment. Further tests are used when symptoms do not improve or warning signs are present:
- Upper GI endoscopy: looks for inflammation (oesophagitis), ulcers, narrowing, Barrett's oesophagus or cancer
- 24-hour pH or impedance monitoring: measures how often acid comes up
- Oesophageal manometry: checks the muscles of the food pipe, usually before surgery
- An ECG and heart tests if the chest pain could be cardiac
Treatment of GERD
- Lifestyle changes: smaller meals; dinner at least 2 to 3 hours before bed; raise the head end of the bed by 15 to 20 cm; lose weight if needed; stop smoking; limit alcohol and trigger foods; avoid tight belts.
- Antacids and alginates for quick, short-term relief.
- H2 blockers such as famotidine for milder symptoms.
- Proton pump inhibitors (PPIs) such as omeprazole or pantoprazole, usually taken 30 to 60 minutes before breakfast for 4 to 8 weeks, then stepped down to the lowest dose that controls symptoms.
- Surgery or endoscopic procedures (for example fundoplication) for a small number of people with severe, proven reflux who do not respond to medicines.
See a doctor soon if you have:
- Difficulty or pain in swallowing, or food sticking
- Unintended weight loss or loss of appetite
- Vomiting blood, or black, tarry stools
- Anemia, persistent vomiting, or new symptoms after age 50
Frequently asked questions
Can acidity cause chest pain?
Yes, reflux is a common cause of burning chest pain. But because heart pain can feel similar, new or severe chest pain should always be checked with an ECG first.
Is it safe to take PPIs for a long time?
They are safe for most people when needed, but long-term use has been linked to lower B12 and magnesium, some infections and bone thinning. Review the need for them with your doctor rather than stopping suddenly.
Does milk help acidity?
Cold milk may soothe briefly, but its fat and protein can trigger more acid later. Water or buttermilk is usually a better choice.
Can GERD be cured?
Many people become symptom-free with weight loss and lifestyle changes. Others need ongoing or on-demand medicine to stay comfortable.
Related reading: 15 low-calorie foods that keep you full, useful if weight loss is part of your reflux plan.
Last updated: September 2026. General health information only, not a diagnosis or a treatment plan. Chest pain can be serious; please seek medical care if you are unsure.
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