Acid reflux is common, but having occasional heartburn is not necessarily the same thing as having gastroesophageal reflux disease, or GERD.

Reflux occurs when contents from the stomach travel backward into the esophagus. For some people, this causes occasional symptoms after a large meal. For others, reflux becomes frequent enough to interfere with daily life or damage the lining of the esophagus.

Understanding what reflux feels like, what can make it worse, and when symptoms deserve further evaluation can help you choose the right treatment rather than simply reaching for another antacid.

What is acid reflux?

The esophagus is the tube that carries food from your mouth to your stomach. At its lower end is a muscular valve called the lower esophageal sphincter.

Normally, this valve helps keep stomach contents where they belong. Reflux can occur when the valve relaxes at the wrong time or does not form an adequate barrier, allowing stomach contents to move upward into the esophagus.

An occasional episode of reflux is common. GERD refers to reflux that causes troublesome, recurring symptoms or leads to complications over time.

What does acid reflux feel like?

The two classic symptoms are:

• Heartburn: A burning sensation behind the breastbone that may rise toward the throat

• Regurgitation: The sensation of liquid or food coming back up into the chest, throat, or mouth

Some people may also experience:

• Upper abdominal or chest discomfort

• A sour or bitter taste in the mouth

• Symptoms that worsen after meals

• Symptoms when lying down or bending over

• Difficulty swallowing

GERD can also occur alongside symptoms such as chronic cough, hoarseness, throat clearing, a sensation of a lump in the throat, or non-cardiac chest pain.

However, these symptoms are not specific to acid reflux. Cough, voice changes, throat discomfort, and chest pain can have many other causes, so persistent symptoms should not automatically be attributed to GERD.

What causes acid reflux?

Reflux is usually not caused by having “too much stomach acid.” The problem is more often that stomach contents are able to travel upward into the esophagus.

Several factors can contribute, including:

• Weakness or inappropriate relaxation of the lower esophageal sphincter

• A hiatal hernia

• Increased pressure within the abdomen

• Obesity

• Pregnancy

• Delayed stomach emptying in some patients

Certain behaviors can also make symptoms worse. Large meals, eating shortly before lying down, and foods or beverages that trigger symptoms for an individual may increase reflux.

Several foods may contribute to GERD but dietary triggers can vary between individuals.

How is acid reflux treated?

Treatment depends on how frequent the symptoms are, how severe they are, and whether there is evidence of damage to the esophagus.

Lifestyle changes

Lifestyle changes can meaningfully improve symptoms for some people. These may include:

• Losing weight when overweight or obesity is contributing to symptoms

• Avoiding meals within several hours of bedtime

• Elevating the head of the bed for nighttime symptoms

• Avoiding foods or beverages that consistently trigger your symptoms

• Eating smaller meals if large meals reliably worsen reflux

Rather than eliminating a long list of foods unnecessarily, it is often more useful to identify your own reproducible triggers.

Antacids

Antacids can provide relatively quick relief for occasional mild heartburn by neutralizing stomach acid.

They may be helpful for intermittent symptoms, but needing them frequently can be a sign that a more effective treatment strategy is needed.

H2 blockers

H2-receptor blockers, such as famotidine, reduce stomach acid production and can be useful for mild or intermittent symptoms.

They generally suppress acid less strongly than proton pump inhibitors.

Proton pump inhibitors

Proton pump inhibitors, or PPIs, include medications such as omeprazole, pantoprazole, and esomeprazole.

PPIs are the most effective medications for acid suppression in GERD and are particularly useful for frequent symptoms and healing reflux-related inflammation of the esophagus.

For many patients, timing matters. PPIs typically work best when taken before a meal rather than at random times throughout the day.

PPIs have also accumulated a long list of potential risks in news reports and online discussions. Current gastroenterology guidance emphasizes that PPIs are generally safe when there is an appropriate reason to use them, and decisions about continuing or reducing treatment should be individualized.

When should reflux be evaluated further?

Not everyone with heartburn needs an endoscopy.

For patients with typical symptoms and no concerning features, treatment may initially be based on symptoms.

Further evaluation may be appropriate when symptoms:

• Do not improve despite appropriate treatment

• Keep returning when treatment is stopped

• Are difficult to clearly attribute to reflux

• Are accompanied by trouble swallowing

• Are accompanied by gastrointestinal bleeding

• Occur with unexplained weight loss

• Are associated with persistent vomiting or anemia

Depending on the situation, evaluation may include an upper endoscopy or reflux monitoring.

This is an important distinction: persistent symptoms despite acid suppression do not automatically mean someone has “severe GERD.” Sometimes the symptoms are being caused by something else entirely, or the esophagus may be unusually sensitive despite normal amounts of reflux.

Can GERD cause complications?

Most people with reflux do not develop serious complications, but chronic GERD can sometimes lead to:

• Erosive esophagitis: Inflammation and injury to the lining of the esophagus

• Esophageal stricture: Scar tissue that narrows the esophagus and can cause difficulty swallowing

• Barrett’s esophagus: A change in the cells lining the lower esophagus associated with long-standing reflux

Barrett’s esophagus increases the risk of esophageal adenocarcinoma, although the absolute risk for an individual patient remains relatively low.

What if medications don’t work?

If symptoms continue despite treatment, the next step is not always simply increasing acid medication.

A clinician may first confirm that the medication is being taken correctly and determine whether the symptoms actually represent ongoing reflux.

In selected patients, testing can include endoscopy, ambulatory reflux monitoring, or evaluation of esophageal function.

Surgical or endoscopic anti-reflux procedures may be appropriate for certain people with objectively confirmed GERD, particularly when symptoms remain troublesome or there are anatomical factors contributing to reflux. Confirmation of GERD and assessment of esophageal function are important before pursuing an invasive procedure.

The bottom line

Acid reflux is common, but reflux symptoms are not one-size-fits-all.

Occasional heartburn may respond to simple lifestyle changes or over-the-counter medication, while frequent or persistent symptoms may require more structured treatment. Proton pump inhibitors remain highly effective therapies for appropriately selected patients.

At the same time, not every episode of chest discomfort, cough, hoarseness, or throat irritation is caused by GERD. If symptoms persist despite treatment or are accompanied by difficulty swallowing, bleeding, weight loss, persistent vomiting, or other concerning features, further evaluation may be appropriate.

The goal is not simply to suppress stomach acid indefinitely. It is to understand what is causing the symptoms and use the least intensive treatment that controls them safely.

References

1. Katz PO, Dunbar KB, Schnoll-Sussman FH, et al. ACG clinical guideline for the diagnosis and management of gastroesophageal reflux disease. Am J Gastroenterol. 2022;117:27-56.

2. Yadlapati R, Gyawali CP, Pandolfino JE, et al. AGA clinical practice update on the personalized approach to the evaluation and management of gastroesophageal reflux disease: Expert review. Clin Gastroenterol Hepatol. 2022;20:984-994.e1.

3. National Institute of Diabetes and Digestive and Kidney Diseases. Acid reflux (GER & GERD) in adults. National Institutes of Health.