Can Coffee Cause Gastric Reflux? The Truth About Your Morning Cup

Coffee plays a significant role in daily life across Canada and has been studied extensively in relation to long-term health outcomes. Recent research has shown that coffee can support health in important ways (Dani et al., 2025; Johns Hopkins Medicine, 2024), at the same time, its high acidity can also be a clear trigger for gastric reflux in certain individuals (Medical News Today, 2023).

At Gastro Westmount, our focus is on gastrointestinal health. Coffee intake is a frequent part of acid reflux discussions because it can increase acid and make reflux more likely. This article reviews how coffee can cause gastric reflux symptoms, and when a clinical assessment becomes useful.

Impacts of Drinking Coffee on Your GERD symptoms and Acid Reflux 

Coffee’s Natural Acidity and the Esophageal Lining

Coffee contains organic acids that contribute to its flavour profile. In an esophagus without inflammation, this level of acidity is usually tolerated, but when gastro oesophageal reflux disease (GERD) is present, the lining of the esophagus is more fragile because of repeated contact with gastric contents. In that setting, coffee can trigger GERD symptoms causing intense burning or discomfort.

The timing of your symptoms can offer helpful clues. Discomfort that starts during or right after coffee may suggest direct irritation, while symptoms that show up later in the day may be more related to digestion or muscle control.

Caffeine and the Lower Esophageal Sphincter

The lower esophageal sphincter separates the esophagus from the stomach and helps control the movement of gastric contents. Caffeine may reduce this and may contribute to it becoming easier for acid to move upward into the esophagus. When stomach acid rises into the esophagus, heartburn results.

Brewing Method and Roast Level

Some people tolerate certain types of coffee better than others. Darker roasts and cold brew are often less acidic, which may make them easier on the stomach for some people. If one type seems to trigger reflux or irritation, it may help to try a different preparation method and record how your symptoms respond.

Additives: Cream, Milk, Sugar, and Syrups

In practice, coffee is rarely consumed on its own. Cream, milk, plant-based alternatives, flavoured syrups, and sugar all influence gastric physiology. Large amounts of creamer can worsen symptoms in some people, especially when the creamer is high in fat. Paying attention to both how much you add and the type of creamer you use may help you notice what your stomach tolerates better.

When reviewing reflux symptoms associated with coffee, it is helpful to consider each component of the drink. Sometimes the primary contributors are the additives rather than the coffee itself. A change in fat content, sweetness level, or serving size can lessen symptoms without removing coffee from the diet entirely.

Coffee on an Empty Stomach

Many individuals drink coffee before eating their first meal of the day. Caffeine may stimulates gastric acid production, and this effect may increase symptoms in some individuals when the stomach is empty. A commentary from the Cleveland Clinic notes that most healthy digestive systems handle empty-stomach coffee without long-term harm (Cleveland Clinic, 2023). In a person with GERD, the same pattern can be associated with noticeable discomfort.

If reflux reliably occurs after the first cup in the morning, a practical test is to change the order of intake. Taking coffee with food or after a small snack can sometimes reduce symptom intensity. This simple adjustment can be a useful way to clarify how much empty-stomach coffee contributes to the problem.

When Persistent Reflux Should Be Evaluated

Isolated episodes of heartburn can happen in many situations and do not always mean there is an ongoing condition. Persistent reflux, frequent regurgitation, throat irritation, chronic cough after meals, or difficulty swallowing should be assessed by a medical professional, especially if symptoms are accompanied by weight loss, gastrointestinal bleeding, anemia, or persistent vomiting.

Get Help With Your Gastroesophageal Reflux Disease With Gastro Westmount

Coffee can trigger reflux in some people but not all, and individual tolerance varies. At Gastro Westmount, chronic acid reflux is evaluated in the context of the individual’s health history, medication profile, and risk factors. We discuss management options to reduce acid reflux and heartburn symptoms that can involve dietary strategies and endoscopic assessment when indicated.

For individuals in Montreal who are concerned about ongoing reflux, a structured assessment can help define the role of coffee and point toward a plan that supports both digestive health and quality of life.

Explore our costs on our service fees page or request an appointment through our online booking form to get professional help for your acid indigestion.  

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References 

• Cleveland Clinic. (2023). Coffee on an empty stomach: Helpful or harmful? https://health.clevelandclinic.org/coffee-on-empty-stomach
• Dani, S., Laranjo, N., Lucas, A., Leal, I., Pereira, H., Silva, T., & Costa, L. (2025). Coffee drinking and mortality by timing of consumption. European Heart Journal, 46(8), 749–758. https://academic.oup.com/eurheartj/article/46/8/749/7928425
• Harvard T.H. Chan School of Public Health. (2023). Coffee may improve gut health. https://hsph.harvard.edu/news/coffee-may-improve-gut-health/
• Johns Hopkins Medicine. (2024). 9 reasons why the right amount of coffee is good for you. https://www.hopkinsmedicine.org/health/wellness-and-prevention/9-reasons-why-the-right-amount-of-coffee-is-good-for-you
• Medical News Today. (2023). Can a person with GERD drink coffee or tea? https://www.medicalnewstoday.com/articles/323333

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