Yes, acid reflux can feel like chest pain, and even like a heart attack. Stomach acid irritating the esophagus causes burning or pressure behind the breastbone, because the esophagus and heart share nerve pathways. Reflux pain usually burns, follows meals and eases with antacids. Pressure with sweating, breathlessness or pain in the arm or jaw needs 911.
Medically reviewed by
Board-certified cardiologist · Katy & Sugar Land, TX
Fellowship-trained in cardiovascular disease, interventional cardiology, echocardiography and advanced heart failure and transplant cardiology. Former Assistant Professor of Cardiology at McGovern Medical School.
Why acid reflux can feel like chest pain
Acid reflux happens when stomach contents flow back into the esophagus, the tube that carries food from the mouth to the stomach. When it happens often, it is called gastroesophageal reflux disease, or GERD. The lining of the esophagus is not built to handle acid, so it becomes irritated and painful.
The esophagus runs directly behind the heart, and both organs send pain signals through overlapping nerves. The brain often cannot tell them apart. Reflux can also trigger spasms of the esophageal muscle, which produce a squeezing pain that may feel exactly like angina. That is why many people arrive in the ER sure they are having a heart attack, only to learn it was reflux, and why the opposite mistake can also happen.
Symptoms of acid reflux chest pain
According to the NIDDK, the most common symptom of GERD is regular heartburn. Reflux chest pain often:
- Feels like burning behind the breastbone that may rise toward the throat.
- Starts after meals, especially large, fatty or spicy ones, or when lying down or bending over.
- Comes with a sour or bitter taste, regurgitation of food, belching or a feeling of food stuck in the chest.
- Improves with antacids, sitting upright or acid-reducing medicine.
- May cause hoarseness, a chronic cough or sore throat, especially in the morning.
Read more about a burning sensation in the chest and chest pain after eating.
Acid reflux vs. heart attack: key differences
These patterns can point in one direction, but they overlap. Heart attacks can feel like indigestion, particularly in women, older adults and people with diabetes.
| Feature | More typical of reflux | More typical of the heart |
|---|---|---|
| Sensation | Burning, sometimes sharp | Pressure, squeezing, heaviness or tightness |
| Timing | After meals, at night, when lying down or bending | With exertion or stress, or at rest without a clear trigger |
| Spread | Rises toward the throat | Spreads to the arm, shoulder, jaw, neck or back |
| Other symptoms | Sour taste, regurgitation, belching | Shortness of breath, cold sweat, nausea, lightheadedness |
| Relief | Antacids, sitting up | Rest (angina); heart attack pain does not ease reliably |
A key safety point: feeling better after an antacid does not prove the pain was reflux. Heart pain can come and go on its own.
- Pressure, squeezing or heaviness lasting more than a few minutes
- Pain spreading to the arm, shoulder, jaw, neck or back
- Shortness of breath, cold sweat, nausea or lightheadedness
- Fainting or a racing, irregular heartbeat
- Vomiting blood or passing black, tarry stools
When chest pain is not acid reflux
Have chest pain evaluated for heart causes if any of these apply:
- It is the first time you have had this kind of pain.
- The pain comes with walking, stairs or exertion and fades with rest; this may be angina.
- You have high blood pressure, diabetes, high cholesterol, smoke, or have a family history of early heart disease.
- “Heartburn” is new after age 50, or reflux medicine is not helping.
- The pain comes with breathlessness, palpitations, dizziness or fatigue.
How doctors tell reflux and heart pain apart
Because missing a heart problem is far more dangerous than missing reflux, doctors usually check the heart first:
- An EKG and, in the ER, troponin blood tests.
- An exercise stress test, stress echo or nuclear stress test to see if pain is caused by reduced blood flow.
- Sometimes a coronary calcium scan or CT angiography to look at the coronary arteries.
When the heart checks out, a primary care doctor or gastroenterologist may try acid-reducing medicine or recommend an upper endoscopy, pH monitoring or esophageal muscle testing. Many patients see both a cardiologist and a GI specialist before getting a clear answer.
Treatment and prevention of reflux chest pain
Once heart causes have been considered, reflux usually responds well to:
- Smaller meals and not eating within about three hours of bedtime.
- Raising the head of the bed by 6 to 8 inches.
- Limiting trigger foods and drinks, such as fatty or fried foods, alcohol, coffee, chocolate, mint, citrus and tomato products.
- Losing excess weight and stopping smoking.
- Over-the-counter or prescription acid reducers, used as your doctor advises.
Many of these steps, especially weight loss, quitting smoking and a heart-healthy diet, also lower heart disease risk.
Heart or reflux? Chest pain evaluation in Katy and Sugar Land
If you have chest pain that you have been treating as reflux but you are not sure, Advanced Cardiology can check your heart. Dr. Khalid reviews your symptoms and risk factors, EKG and echocardiogram testing are available in the office, and stress testing can be arranged. When the heart is normal, we coordinate with your primary care doctor or gastroenterologist. Learn about our chest pain care.
Katy office: 410 W Grand Pkwy S, Suite 4D, Katy, TX 77494
Sugar Land office: 7102 Tarrington Ave, Suite 505, Sugar Land, TX 77479
Phone: (713) 258-6111
We also see patients from Fulshear, Richmond, Rosenberg, Stafford, Missouri City and west Houston.
Rule out your heart, then treat the reflux
Peace of mind starts with knowing your heart is healthy. Request a cardiology visit in Katy or Sugar Land.
Having symptoms right now? Call 911. Do not wait for an appointment.
Frequently asked questions
Can acid reflux feel like a heart attack?
Yes. Reflux can cause burning or squeezing chest pain that feels very similar to heart pain because the esophagus and heart share nerve pathways. Only testing can reliably tell them apart, so new or severe chest pain needs emergency care.
How do I know if my chest pain is acid reflux?
Reflux pain usually burns, rises toward the throat, follows meals or lying down, and comes with a sour taste. Pressure, pain with exertion or pain spreading to the arm or jaw points more toward the heart.
Where is acid reflux chest pain located?
Usually behind the breastbone in the center of the chest, sometimes rising to the throat. Some people feel it in the upper abdomen or back.
Can acid reflux cause left-sided chest pain?
Reflux typically causes central chest pain, but it can be felt slightly to the left. Left-sided chest pain should not be blamed on reflux without considering heart causes.
How long does acid reflux chest pain last?
Episodes can last minutes to a couple of hours and often improve with antacids or sitting upright. Pain that lasts longer, keeps returning or does not improve should be evaluated.
Can GERD cause shortness of breath?
Reflux can trigger coughing and asthma-like symptoms in some people. New shortness of breath with chest pain should be treated as a possible heart or lung problem first.
Should I see a cardiologist or a gastroenterologist for chest pain?
If heart causes have not been checked, see a cardiologist or primary care doctor first, especially if you have risk factors. If the heart is normal, a gastroenterologist can evaluate reflux and esophageal causes.
Trusted health resources
- Acid Reflux (GER and GERD) in Adults, National Institute of Diabetes and Digestive and Kidney Diseases (NIH)
- GERD, MedlinePlus, U.S. National Library of Medicine
- Heart Attack: Symptoms, National Heart, Lung, and Blood Institute (NIH)
- Stable angina, MedlinePlus Medical Encyclopedia
- Chest Pain, MedlinePlus, U.S. National Library of Medicine
Medical disclaimer: This article is for general education and is not a diagnosis or a substitute for care from your own doctor. If you think you may be having a heart attack, stroke or another emergency, call 911 right away.
