The fastest way to take heartburn away is to neutralize the acid that’s already irritating your esophagus. A liquid antacid or a glass of cold water with half a teaspoon of baking soda can bring relief within minutes. But depending on how often heartburn hits and what’s triggering it, you have several options that work on different timescales, from seconds to days.
Fastest Relief: Antacids and Baking Soda
Antacids work by directly neutralizing stomach acid on contact. Liquid forms act faster than tablets, though tablets are more portable. On an empty stomach, relief is real but short-lived. If you take an antacid after eating, the effect can last up to four hours because food keeps the medication in your stomach longer. Taking a dose at one hour and again at three hours after a meal extends that window significantly.
Baking soda (sodium bicarbonate) is essentially a DIY antacid. Half a teaspoon dissolved in a glass of cold water can calm heartburn quickly. The Mayo Clinic notes that adults can repeat this dose every two hours, but should not exceed five teaspoons in a single day. Baking soda contains a large amount of sodium, so it’s not a good option if you have high blood pressure, heart disease, or kidney problems. Using it regularly or in large amounts can cause water retention, headaches, nausea, and muscle twitching.
Longer-Lasting Relief: Acid Reducers
If antacids wear off too quickly or you find yourself reaching for them multiple times a day, acid reducers offer a longer window. H2 blockers, available over the counter, take about an hour to kick in but then suppress acid production for four to ten hours. That tradeoff makes them better suited for predictable heartburn, like the kind that shows up every evening or wakes you at night. You can pair an antacid for immediate relief with an H2 blocker for sustained control.
Proton pump inhibitors (PPIs) are the strongest option. They shut down acid production at its source and are designed for frequent heartburn, typically defined as two or more episodes per week. PPIs don’t provide instant relief. They need to be taken daily, and their effect builds over several days of consistent use. They’re a maintenance tool, not a rescue remedy.
Chewing Gum After Meals
This one sounds too simple to work, but chewing gum after eating genuinely reduces heartburn. Chewing stimulates saliva production, and saliva is naturally alkaline. That steady stream of alkaline fluid washes down the esophagus and helps neutralize any acid that has crept upward. Research published in Alimentary Pharmacology & Therapeutics found that chewing gum increased esophageal pH (meaning less acidity) within 15 to 30 minutes, and that gum containing calcium carbonate outperformed standard chewable antacids in how long it kept heartburn away. Even plain sugar-free gum helps, though antacid gums combine both mechanisms.
Foods and Drinks That Make It Worse
Heartburn happens when acid escapes from your stomach into your esophagus. The gate between them, called the lower esophageal sphincter (LES), is supposed to stay shut after you swallow. Certain foods relax that gate and let acid through.
Coffee, tea, cola, and anything else with caffeine loosens the LES. So do chocolate and peppermint, which is ironic since both are often served at the end of a meal. Large meals are a problem regardless of what’s on the plate: a full, distended stomach pushes its contents upward and weakens the sphincter at the same time. Eating smaller portions is one of the most effective changes you can make, even without cutting specific foods.
How You Position Your Body Matters
Gravity is either helping you or working against you. Lying flat after eating lets acid pool at the entrance to your esophagus. The most commonly cited advice is to wait at least three hours after dinner before going to bed, but research suggests that a gap of four to six hours, combined with a smaller evening meal, is more effective at reducing nighttime reflux.
When you do lie down, your sleeping position makes a measurable difference. Sleeping on your left side keeps your stomach positioned below your esophagus, so acid is less likely to travel upward. Research from Amsterdam UMC confirmed that left-side sleeping reduces acid reflux compared to sleeping on the right side or on your back. Elevating the head of your bed by about six inches (using a wedge or blocks under the bed frame, not just extra pillows) adds another layer of protection by tilting the angle against reflux.
Other Habits That Help
Tight clothing, especially anything snug around your waist or abdomen, increases pressure on your stomach and can push acid upward. Loosening your belt or changing into something less restrictive after eating is a small adjustment that can prevent an episode entirely.
Smoking relaxes the lower esophageal sphincter and reduces saliva production, hitting you with a double effect. Alcohol does the same and also increases acid production. If heartburn is a recurring problem, these two habits are worth addressing before anything else.
Excess weight, particularly around the midsection, creates constant upward pressure on the stomach. Even modest weight loss tends to reduce heartburn frequency and severity noticeably.
When Chest Pain Isn’t Heartburn
Heartburn and heart attack symptoms overlap more than most people realize. Heart attacks can cause nausea, indigestion, and a burning sensation in the chest that feels exactly like reflux. The Mayo Clinic warns that chest pain doesn’t have to last a long time to be a warning sign. If your chest pain comes with pressure that spreads to your arms, neck, jaw, or back, shortness of breath, cold sweat, lightheadedness, or unusual fatigue, call 911. Women are more likely than men to experience the less obvious symptoms like jaw pain, back pain, and nausea without the classic “crushing” chest sensation. If you’ve had an episode of unexplained chest pain that went away on its own and you didn’t seek help at the time, it’s still worth following up with a doctor.