The fastest way to calm heartburn is to take an antacid, which neutralizes stomach acid and can start raising your stomach’s pH in under 6 minutes. But if you don’t have antacids on hand, or you’re looking for longer-term relief, several physical adjustments, dietary changes, and simple home remedies can help significantly. Here’s what actually works and why.
Fast Relief With Antacids
Antacids work by chemically neutralizing the hydrochloric acid in your stomach. The active ingredients, typically calcium carbonate or magnesium carbonate, bind to acid molecules and convert them into harmless compounds like water, carbon dioxide, and salt. This directly raises the pH in your stomach so there’s less acid available to splash up into your esophagus.
How quickly they work depends on the formulation. Liquid or effervescent forms act fastest: a sodium bicarbonate and citric acid combination can begin changing stomach pH in seconds, while calcium-magnesium carbonate tablets typically reach a meaningful pH shift within about 6 minutes. Most antacid tablets and gels hit their target within the first 30 minutes. The tradeoff is that antacids wear off relatively quickly, usually within one to two hours, so they’re best for occasional flare-ups rather than ongoing control.
Longer-Lasting Over-the-Counter Options
If heartburn keeps returning, two other categories of acid reducers work differently than antacids. H2 blockers (like famotidine) reduce the amount of acid your stomach produces, rather than neutralizing what’s already there. They take longer to kick in, usually 30 to 60 minutes, but their effects last several hours.
Proton pump inhibitors, or PPIs (like omeprazole), block the final step of acid production entirely. They’re the most powerful option and provide the longest-lasting suppression, but they’re designed for daily use over a period of weeks rather than as-needed relief. In studies comparing the two, PPIs healed esophageal damage at roughly twice the rate of H2 blockers at every time point measured. After just two weeks on a PPI, healing rates were higher than what H2 blockers achieved after eight weeks. If your heartburn is frequent (two or more times per week), a PPI taken daily for a short course is far more effective than reaching for antacids each time.
Adjust Your Position
Gravity is one of your best tools against heartburn, especially at night. When you lie flat, stomach acid can easily flow into your esophagus. Elevating the head of your bed by about 20 centimeters (roughly 8 inches) creates enough of an incline to keep acid where it belongs. You can do this with wooden blocks or risers under the headboard legs, or with a wedge-shaped pillow angled at about 20 degrees. Multiple controlled trials have confirmed this reduces both the frequency and severity of nighttime reflux symptoms. Stacking regular pillows doesn’t work as well because it bends your body at the waist rather than creating a gradual slope.
Which side you sleep on matters too. Sleeping on your left side positions your esophagus above your stomach, so acid has to fight gravity to reach it. Sleeping on your right side does the opposite: it places your stomach above the junction where the esophagus connects, making it much easier for acid to flow upward. A systematic review and meta-analysis confirmed that right-side sleeping consistently triggers more heartburn and reflux episodes than left-side sleeping. If nighttime heartburn is your main problem, combining left-side sleeping with bed elevation can make a noticeable difference within a few nights.
Identify Your Food Triggers
Certain foods provoke heartburn through specific, well-understood mechanisms. The most consistent offenders are:
- High-fat meals: Fat reduces the pressure of the muscular valve between your esophagus and stomach (called the lower esophageal sphincter, or LES), making it easier for acid to escape upward. Large, greasy meals are one of the most reliable heartburn triggers.
- Citrus fruits: Oranges, lemons, and grapefruits both lower LES pressure and slow gastric emptying, keeping acidic contents in your stomach longer.
- Carbonated beverages: These increase stomach pressure with gas while also being acidic themselves. Many also contain caffeine and sugar, both of which can further relax the LES.
- Spicy foods: Especially problematic when combined with lying down after eating, which is a common pattern that compounds the effect.
- Coffee: Relaxes the LES and increases the percentage of time acid sits in the esophagus, even on an empty stomach.
You don’t necessarily need to eliminate all of these permanently. Many people find that one or two are their primary triggers. Keeping a simple food diary for a week or two, noting what you ate and when heartburn hit, can help you narrow it down without unnecessarily restricting your diet.
Timing Your Meals
When you eat can matter as much as what you eat. Eating within two to three hours of lying down is one of the most common causes of nighttime heartburn. Your stomach needs time to empty its contents into the small intestine. If you lie down while your stomach is still full, there’s more volume available to reflux upward. Eating smaller, more frequent meals rather than a few large ones also helps by keeping stomach volume lower at any given time.
Simple Home Remedies That Help
Chewing gum after a meal is a surprisingly effective way to reduce heartburn. It stimulates saliva production, and saliva is naturally alkaline. The increased swallowing washes acid back down from the esophagus and raises pH levels in both the esophagus and throat. Bicarbonate-containing gum works even better than regular gum, though any sugar-free variety will help. It’s a particularly good strategy when you’re away from home and don’t have antacids available.
Baking soda (sodium bicarbonate) is essentially a DIY antacid. Half a teaspoon dissolved in a full glass of water can provide quick relief. The Mayo Clinic lists the standard adult dose as half a teaspoon in water every two hours, with no more than five teaspoons in a day. However, baking soda is high in sodium, so it’s not appropriate if you have high blood pressure, heart disease, kidney disease, or swelling in your legs and feet. The sodium can cause your body to retain water, worsening those conditions. It’s fine as an occasional remedy for otherwise healthy people, but it shouldn’t replace proper antacids for regular use.
Ginger has a long reputation as a digestive aid, though its effect on heartburn specifically is nuanced. A study in healthy volunteers found that one gram of dried ginger powder didn’t change resting pressure of the valve between the stomach and esophagus, but it did increase relaxation of that valve during swallowing. This could help with gas and bloating but might not directly prevent acid reflux. If ginger tea or supplements seem to help your symptoms, there’s no harm in continuing, but the evidence for heartburn relief specifically is modest.
When Heartburn Might Be Something Else
Most heartburn is exactly what it feels like: stomach acid irritating your esophagus. But chest pain from heartburn can feel remarkably similar to a heart attack. Heart attack symptoms typically include pressure, tightness, or squeezing pain in the chest that may spread to your neck, jaw, or arms, along with shortness of breath, cold sweats, lightheadedness, or sudden fatigue. If you experience persistent chest pain and aren’t sure whether it’s heartburn, treat it as a cardiac emergency. If you’ve had an episode of unexplained chest pain that resolved on its own, it’s still worth getting checked out afterward.
Heartburn that occurs more than twice a week, doesn’t respond to over-the-counter medications, or comes with difficulty swallowing or unintentional weight loss may indicate gastroesophageal reflux disease (GERD) or another condition that needs more targeted treatment.