Water is the single best thing you can drink if you have acid reflux, and swapping just two daily servings of coffee, tea, or soda for water is associated with fewer reflux symptoms. Beyond plain water, several other beverages are safe choices, while a few common drinks reliably make things worse. The key is understanding which properties of a drink actually trigger reflux: acidity, carbonation, and volume all play distinct roles.
Why Water Is the Top Choice
Plain water has a neutral pH, doesn’t relax the muscular valve between your esophagus and stomach, and won’t irritate tissue that’s already inflamed. Data from the large, long-running Nurses’ Health Study found that substituting water for two servings of coffee, tea, or soda per day was linked to a measurable decrease in reflux symptoms. No other beverage has that kind of straightforward benefit with zero downside.
Temperature matters slightly. Cold water can increase resting pressure in the lower esophageal sphincter and prolong esophageal contractions, which may feel uncomfortable if you’re already dealing with reflux or motility issues. Warm or room-temperature water does the opposite, relaxing the sphincter during swallowing and shortening contraction time. If cold drinks seem to bother you, switching to warm water is a simple fix.
Alkaline Water: A Small Extra Edge
Water with a pH of 8.8 permanently deactivates pepsin, the stomach enzyme that damages esophageal tissue when it travels upward with reflux. Regular tap water (typically around pH 7) doesn’t do this because pepsin stays stable at neutral pH and can be reactivated by any new acid exposure. Alkaline water also buffers acid more effectively than conventional water. It’s not a replacement for medication in severe cases, but as a daily beverage choice, it offers a minor therapeutic advantage over regular water.
Non-Citrus Juices and Milk
Milk and juice were not associated with increased reflux symptoms in the Nurses’ Health Study, even though some juices are moderately acidic. That said, not all juices are equal. Citrus juice is one of the most consistently reported symptom triggers. Grapefruit juice has a pH between 3.0 and 3.75, orange juice falls between 3.3 and 4.2, and lemon juice sits as low as 2.0. These won’t necessarily increase actual acid reflux events, but they can directly irritate an already-inflamed esophagus, producing that familiar burning sensation.
If you enjoy juice, lower-acid options are a better bet. Pear, melon, and carrot juices are gentler choices. Apple juice, despite being popular, is still fairly acidic (pH 3.35 to 4.0), so it may bother some people. Tomato juice sits at pH 4.1 to 4.6, which is less acidic than citrus but still a commonly reported trigger. Your own tolerance will vary, and tracking which juices provoke your symptoms is more useful than memorizing pH charts.
The Problem With Carbonation
Carbonated beverages are one of the few drink categories that clinical guidelines specifically recommend avoiding, backed by moderate-strength evidence. The reason is mechanical, not chemical. When carbonation releases gas in your stomach, the resulting distension weakens the valve at the top of your stomach. In a study of healthy volunteers, every carbonated beverage tested reduced the strength of that valve by 30 to 50% for a sustained 20-minute period. In 62% of cases, the weakening was severe enough to reach a level normally considered diagnostic of valve incompetence. Tap water caused no reduction at all.
This applies to sparkling water, seltzer, and club soda just as much as sugary sodas. The bubbles are the problem, not the flavor. If you’re looking for something more interesting than still water, herbal tea or flavored still water are better alternatives than reaching for anything carbonated.
Coffee and Tea: It’s Complicated
Coffee gets blamed for acid reflux constantly, but the evidence is surprisingly thin. A meta-analysis combining data from multiple studies found no significant association between coffee intake and reflux disease, with an odds ratio of 1.06 (essentially no effect). Lab studies have shown that coffee and caffeine have little to no impact on the pressure of the lower esophageal sphincter.
That said, six or more daily servings of coffee, tea, or soda were associated with more reflux symptoms compared to zero servings in the Nurses’ Health Study. The mechanism may be direct irritation of the esophageal lining rather than triggering actual reflux events. In other words, coffee might not cause more acid to splash upward, but it could make your esophagus more sensitive to the acid that does.
The American College of Gastroenterology rates the recommendation to switch to decaffeinated beverages as “not generally recommendable,” with equivocal evidence. If coffee clearly worsens your symptoms, cutting back makes sense. But if you drink a cup or two without trouble, there’s no strong reason to quit on principle. Paying attention to your own pattern matters more than following a blanket rule.
Alcohol and Reflux
Not all alcoholic drinks affect reflux equally. White wine significantly lowers the pressure of the esophageal valve compared to both red wine and water, and it leads to more acid exposure in the esophagus. In one study, the fraction of time esophageal pH dropped below the reflux threshold was 13.2% after white wine versus 2.3% after red wine and 0.9% after water. White wine also changed the reflux pattern itself, increasing what researchers call “free reflux,” where acid flows upward without any physical strain or trigger.
Red wine still increased acid exposure compared to water, just less dramatically. Beer has also been shown to induce reflux. Clinical guidelines rate the overall recommendation to avoid alcohol as “not generally recommendable” because the evidence is weak and varies by beverage type. If you drink occasionally, red wine is a better choice than white wine or beer for minimizing symptoms.
How Much You Drink Matters Too
Volume is an underappreciated trigger. In a study comparing 300 mL and 600 mL liquid meals (roughly 10 ounces versus 20 ounces), the larger volume produced 70% more reflux episodes and more than double the total acid exposure time. Larger volumes stretch the upper part of the stomach, which physically pushes the valve open.
This means that even a perfectly safe beverage can cause problems if you drink too much at once, especially during a meal when your stomach is already partly full. Sipping smaller amounts throughout the day rather than drinking large glasses with meals is a practical way to reduce reflux regardless of what’s in your cup.
A Quick Ranking
- Best choices: Still water (warm or room temperature), alkaline water, herbal teas, low-acid juices like pear or carrot, milk
- Moderate choices: Coffee and tea in small amounts, red wine occasionally, decaf coffee
- Worst choices: Any carbonated beverage, citrus juice, white wine, large volumes of any liquid with meals
Individual triggers vary widely. The strongest universal advice is simple: drink more still water, avoid carbonation, and keep portions small. Beyond that, paying attention to your own body’s responses will guide you better than any generic list.