Indigestion: Causes, Relief, and When to See a Doctor

Common causes of indigestion

Indigestion is a presentation, which means many different problems can produce the same feeling. Often the trigger is simply how and what you eat: large meals, eating quickly, fatty or fried food, caffeine, alcohol, carbonation, or lying down too soon after eating. Stress, smoking, and certain medicines such as anti-inflammatory pain relievers (ibuprofen, naproxen, aspirin) can also irritate the stomach lining.

When a medical condition is behind it, these are the usual suspects:

• Acid reflux, where stomach acid backs up into the food pipe, is the single most frequent cause of burning indigestion.
• Gastritis, or inflammation of the stomach lining, often from medicines, alcohol, or infection.
• A stomach ulcer, an open sore in the stomach or upper intestine that causes a gnawing ache.
• Helicobacter pylori infections, a bacterium that drives many ulcers and chronic gastritis.
• A hiatal hernia, where part of the stomach pushes up through the diaphragm and worsens reflux.
• Esophagitis or eosinophilic esophagitis, inflammation of the food pipe that makes eating uncomfortable.
• Gastroparesis, slow stomach emptying that leaves you full and bloated.
• Gallstones or pancreatitis, which can mimic indigestion with upper-belly pain after fatty meals.
• Food-related causes such as lactose intolerance, celiac disease, irritable bowel syndrome, gastroenteritis, and food poisoning.

When tests find no clear damage, doctors call it functional indigestion (functional dyspepsia). It is real and uncomfortable, just not tied to an ulcer or visible inflammation. It still responds well to the relief steps and treatments described below.

When to seek emergency or urgent care

Most indigestion is harmless, but a few signs mean you should not wait. Some heart problems feel exactly like indigestion, so chest symptoms deserve caution.

Call 911 or go to the emergency room now if you have

• Chest pressure, tightness, or pain, especially with sweating, shortness of breath, lightheadedness, or pain spreading to your arm, neck, or jaw. This can be a heart attack, not indigestion.
• Vomiting blood, or vomit that looks like coffee grounds.
• Black, tarry, or bloody stools, which signal bleeding in the stomach or intestine.
• Sudden, severe, unrelenting belly pain.
• Trouble breathing or trouble swallowing, or food that feels stuck.

See a doctor promptly (within days) if you have

• Indigestion that keeps coming back or lasts more than two weeks despite over-the-counter relief.
• Unexplained weight loss, ongoing vomiting, or loss of appetite.
• Pain that wakes you from sleep, or that started after age 55 for the first time.
• Constant heartburn, or symptoms that no longer respond to antacids.

When in doubt about chest symptoms, treat it as a heart concern and seek immediate care. It is always better to be checked and reassured than to assume burning chest discomfort is only your stomach.

How to get relief and self-care steps

For everyday indigestion, small changes plus the right over-the-counter product handle most cases.

Over-the-counter options

• Antacids: Calcium carbonate (the active ingredient in popular chewable antacid tablets) and magnesium or aluminum products neutralize acid that is already there. They work within minutes but wear off in an hour or two, so they suit occasional, mild symptoms.
• H2 blockers: Famotidine lowers how much acid your stomach makes. It works a bit slower than an antacid but lasts longer, which helps for predictable evening or nighttime symptoms.
• Proton pump inhibitors (PPIs): Omeprazole and similar drugs strongly reduce acid production for frequent heartburn. They take a day or two to reach full effect and are meant for short courses unless your doctor advises otherwise.
• One caution with fizzy bicarbonate products that combine sodium bicarbonate with aspirin: the aspirin component can irritate the stomach lining and is not a good choice if any bleeding is a concern. Read labels and ask a pharmacist.

Home and lifestyle steps

• Eat smaller meals more often instead of large ones, and slow down while eating.
• Stay upright for two to three hours after eating, and avoid late-night meals.
• Cut back on common triggers: fried and fatty food, spicy dishes, citrus, tomato, chocolate, peppermint, caffeine, alcohol, and carbonated drinks.
• Raise the head of your bed a few inches if symptoms strike at night.
• Lose extra weight if you carry it around the middle, and stop smoking.
• Ginger tea, chamomile, and chewing gum after meals ease symptoms for some people. These home remedies are gentle to try but are not a substitute for medical care if symptoms persist.

If you rely on antacids most days, that is a signal to look for the underlying cause rather than treating the burn over and over.

Indigestion and heartburn during pregnancy

Indigestion and heartburn are very common in pregnancy, especially in the second and third trimesters. Two things drive it. Pregnancy hormones relax the valve between the stomach and food pipe, so acid escapes upward more easily. Later on, the growing baby pushes up on your stomach, leaving less room and more pressure.

The self-care steps above are the right first move in pregnancy. Eat smaller meals, avoid lying down soon after eating, prop yourself up at night, and limit greasy or spicy food. Many calcium-based antacids are considered acceptable during pregnancy, but confirm any medicine, including over-the-counter ones, with your obstetrician or midwife before using it regularly.

Pregnancy heartburn is uncomfortable but usually not dangerous, and it tends to ease after delivery. Still, tell your care team if symptoms are severe, if you cannot keep food or fluids down, or if you have pain in the upper right belly with swelling or headache, since that needs prompt evaluation.

How indigestion is diagnosed

If your indigestion is occasional and responds to simple measures, you may not need any testing. When it is frequent, severe, or comes with warning signs, a clinician works to find the cause.

Expect questions about your eating habits, the timing and pattern of symptoms, your medicines, alcohol and tobacco use, and any family history of stomach problems. From there, testing is targeted:

• H. pylori testing with a breath, stool, or blood test, since clearing this infection often cures the symptoms.
• Upper endoscopy, where a thin camera looks at the food pipe, stomach, and upper intestine to spot inflammation, ulcers, a hernia, or other damage. Tissue samples can be taken at the same time.
• Blood tests to check for anemia, celiac disease, liver issues, or signs of inflammation.
• Imaging such as an ultrasound when gallstones or the pancreas are suspected.

Older adults with new indigestion, or anyone with weight loss, swallowing trouble, or signs of bleeding, are more likely to be sent for endoscopy sooner. This page is educational and does not replace a personal evaluation; a clinician interprets your full picture before settling on a cause.

When to see a doctor and which specialist

Start with your primary care clinician for indigestion that keeps returning, lasts more than two weeks, or no longer responds to over-the-counter relief. They can check for the common causes, test for H. pylori, and start treatment.

The specialist who handles the digestive system is a gastroenterologist. You are likely to be referred to one if you have alarm signs, if endoscopy is needed, or if a condition such as an ulcer, reflux disease, a hernia, or functional dyspepsia needs ongoing management. Gastroenterologists also perform the endoscopy and other procedures that pin down the cause.

Local care matters because you may need in-person testing and follow-up. You can find a gastroenterologist near you using the directory on this site, which lists thousands of these specialists by state and city. Bring a simple symptom diary to your visit: what you ate, when the discomfort started, what helped, and what made it worse. That record often shortens the path to the right answer.

Frequently Asked Questions

Medical disclaimer: This content is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you have a medical emergency, call 911. Our editorial standards