Tea can worsen GERD symptoms, but the effect depends heavily on how much you drink, what type of tea you choose, and your individual sensitivity. Large-scale data from the Nurses’ Health Study found that tea consumption increased GERD risk by 8% to 26% as intake rose, with people drinking six or more cups per day facing roughly a 25% to 35% increase in reflux symptoms compared to non-drinkers. That said, moderate tea drinking isn’t an automatic problem for everyone with reflux, and some herbal teas may actually help.
What the Evidence Actually Shows
The American College of Gastroenterology addressed this topic directly in its 2022 clinical guidelines, and the answer is more nuanced than a simple yes or no. The guideline notes that supporting data for restricting specific beverages like tea are “limited and variable, often involving only small and uncontrolled studies.” Lab studies have found that caffeine has little to no effect on the pressure of the valve between your esophagus and stomach, which is the main physical barrier against reflux. Yet tea still appears to irritate the esophagus in some people through other mechanisms that aren’t fully understood.
The ACG rated the recommendation to “select decaffeinated beverages” as “equivocal” in both scientific strength and clinical conclusiveness, and labeled it “not generally” recommendable as a blanket rule. Instead, the guideline offers a conditional suggestion to avoid personal “trigger foods” for symptom control. In practical terms, this means tea isn’t universally bad for GERD, but if it consistently triggers your symptoms, cutting back is reasonable.
One useful finding from the Nurses’ Health Study: substituting water for just two servings of coffee, tea, or soda per day was associated with a measurable decrease in GERD symptoms. If you’re trying to figure out whether tea is contributing to your reflux, swapping a couple of cups for water is a simple first experiment.
Why Caffeinated Tea Can Trigger Reflux
Black tea, green tea, and white tea all contain caffeine, though in varying amounts. A typical cup of black tea has 40 to 70 mg of caffeine, while green tea runs closer to 20 to 45 mg. Caffeine stimulates acid production in the stomach, and more acid means more potential for that acid to splash upward into the esophagus, especially when you’re lying down or bending over after drinking.
Tea is also mildly acidic on its own, with a pH that typically falls between 4.5 and 5.5 depending on the type and brewing time. For someone whose esophageal lining is already irritated from chronic reflux, even mildly acidic beverages can cause a burning sensation that feels disproportionate to the actual acid content. This is why some people notice symptoms from tea even though it’s far less acidic than orange juice or coffee.
Peppermint Tea: A Surprising Problem
Peppermint tea deserves a special warning for people with GERD, despite its reputation as a digestive aid. Peppermint oil relaxes smooth muscle, and that includes the lower esophageal sphincter, the ring of muscle that keeps stomach acid from flowing back up. Research from the Medical University of South Carolina confirmed that peppermint relaxes this muscle specifically, which is helpful for conditions like esophageal spasm but counterproductive for reflux. A relaxed sphincter lets acid escape more easily into the esophagus.
If you’ve been drinking peppermint tea to soothe digestive discomfort and noticing that your heartburn actually gets worse, this is likely why. It’s one of the few herbal teas that can directly worsen the mechanics of reflux rather than just irritating the lining.
Herbal Teas That May Help
Not all teas aggravate GERD. Chamomile tea has anti-inflammatory and antioxidant properties that may help calm an irritated esophagus, particularly when consumed after meals or before bed. It’s caffeine-free and has a near-neutral pH, making it one of the gentler options. Some people with mild reflux find that a warm cup of chamomile actually reduces their evening symptoms.
Ginger tea is another option worth trying. Ginger supports faster gastric emptying, meaning food moves from your stomach into your small intestine more quickly. Once food clears the stomach, there’s less need for acid production and less material to reflux upward. This makes ginger particularly useful for postmeal reflux, the kind that hits 30 to 60 minutes after eating. Start with a mild concentration, though, because strong ginger tea can cause its own stomach irritation in some people.
Temperature Matters Too
How hot you drink your tea is an overlooked factor. Research from Memorial Sloan Kettering Cancer Center highlights that drinking tea at 60°C (140°F) or higher can damage the esophageal lining over time. For someone with GERD, where the esophagus is already dealing with repeated acid exposure, very hot beverages add a second source of irritation. Letting your tea cool for a few minutes before drinking, or adding a splash of cold water, reduces this risk without changing the flavor much.
Cold brewing tea, on the other hand, doesn’t appear to offer a significant advantage in terms of acidity. Studies comparing cold-brewed and hot-brewed versions of the same tea show minimal differences in pH. So while cold brew tea is gentler on your esophagus from a temperature standpoint, it won’t meaningfully reduce the acid content of the drink itself.
A Practical Approach to Tea and GERD
The most useful strategy is personal experimentation rather than blanket avoidance. Keep these principles in mind:
- Volume is the biggest variable. One or two cups of tea per day carries a much smaller risk increase than six or more cups. If you’re a heavy tea drinker with persistent reflux, cutting back is the most impactful change you can make.
- Timing matters. Drinking tea on an empty stomach or right before lying down increases the chance of symptoms. Having tea with or shortly after a meal, when your stomach is already producing acid, tends to be better tolerated.
- Switch selectively. Replacing two daily cups of caffeinated tea with water has been linked to reduced symptoms. You don’t necessarily need to quit entirely.
- Choose your type carefully. Chamomile and ginger teas are the friendliest options for GERD. Avoid peppermint tea. If you prefer traditional tea, green tea has less caffeine than black tea and may be easier to tolerate.
- Let it cool. Drinking tea below 60°C (140°F) protects an already vulnerable esophagus from thermal irritation.
GERD triggers are highly individual. Some people drink black tea daily with no issues, while others find that even a single cup of green tea sets off hours of heartburn. Paying attention to your own pattern, rather than following a universal restriction list, is what the current evidence supports.