The fastest way to soothe heartburn is to take an antacid, which neutralizes stomach acid within minutes. But if you don’t have one handy, staying upright, chewing sugar-free gum, or mixing half a teaspoon of baking soda into a glass of cold water can all bring relief. For heartburn that keeps coming back, the real fix involves changes to when and how you eat, how you sleep, and sometimes your body weight.
What’s Actually Happening in Your Chest
Heartburn is the burning sensation you feel when stomach acid flows backward into your esophagus, the tube connecting your mouth to your stomach. At the bottom of that tube sits a ring of muscle that normally opens to let food in and then closes tight. When that muscle weakens or relaxes at the wrong time, acid escapes upward and irritates the esophageal lining, which has no protective coating against it.
Several things can weaken that muscle. Extra body weight increases pressure on your stomach. So does pregnancy. Smoking relaxes the muscle directly. A hiatal hernia, where part of the stomach pushes up through the diaphragm, makes reflux more likely by changing the angle between the stomach and esophagus. Even lying down too soon after eating can be enough, since gravity is no longer helping keep acid where it belongs.
Quick Relief Without a Trip to the Store
If heartburn strikes and you don’t have medication on hand, a few strategies can help right away.
Baking soda in water. Half a teaspoon of baking soda dissolved in a glass of cold water acts as a basic antacid. It works by neutralizing stomach acid on contact. Don’t use more than five teaspoons in a day, and don’t rely on this method for more than two weeks. Baking soda is high in sodium, so it’s not a good option if you have high blood pressure, heart disease, or kidney problems.
Chewing sugar-free gum. Chewing gum for 30 minutes after a meal stimulates saliva production and increases how often you swallow. Each swallow pushes acid back down into the stomach and coats the esophagus with alkaline saliva. A study from King’s College London found that chewing gum for half an hour after a reflux-triggering meal significantly reduced acid exposure in the esophagus.
Staying upright. Don’t lie down for at least two to three hours after eating. If you’re already in bed, sit up or prop yourself up with pillows. Gravity is your simplest tool.
Over-the-Counter Medications
Antacids are the fastest-acting option and work best when taken after a meal or as soon as symptoms start. Calcium-based products (like Tums) and magnesium-based products (like Maalox) neutralize acid directly in the stomach. Some combination products form a foam barrier that floats on top of your stomach contents, physically blocking acid from reaching the esophagus.
If antacids aren’t enough, the next step up is an acid reducer. H2 blockers reduce the amount of acid your stomach produces and typically start working within 30 to 60 minutes, lasting several hours. Proton pump inhibitors, or PPIs, are the strongest option and work by shutting down acid production more completely, but they take one to three days to reach full effect. They’re designed for short courses of four to eight weeks, not indefinite use.
Long-term PPI use has been linked to lower absorption of vitamin B12, magnesium, calcium, and iron. A large analysis found that people on PPIs had a 43% higher risk of magnesium deficiency, and a Kaiser Permanente study found that two or more years of use significantly raised the risk of B12 deficiency. If you’ve been taking a PPI for months, it’s worth having your levels checked.
Foods That Make Heartburn Worse
High-fat meals are one of the most reliable heartburn triggers. Fat weakens the muscle at the base of the esophagus, increases the frequency of inappropriate relaxations, and slows stomach emptying, meaning acid sits around longer with more opportunity to reflux. Fried foods, creamy sauces, and fatty cuts of meat are common culprits.
Other well-known triggers include spicy foods, citrus, tomato-based dishes, chocolate, coffee, alcohol, and carbonated drinks. Dairy can also be a trigger for some people: lactose has been shown to increase the number of reflux episodes and the amount of time acid sits in the esophagus. Triggers vary from person to person, so paying attention to your own patterns matters more than following a universal list.
Meal size and timing matter as much as what you eat. Smaller, more frequent meals put less pressure on the stomach. Eating your last meal at least two to three hours before bed gives your stomach time to empty before you lie down.
How You Sleep Makes a Big Difference
Sleeping on your left side is one of the most effective positional strategies for nighttime heartburn. When you lie on your left side, your esophagus sits above the level of your stomach, so acid has to fight gravity to reflux. On your right side, the opposite happens: the esophagus drops below the stomach’s acid pool, making reflux far more likely and slowing the time it takes for acid to clear.
Elevating the head of your bed by six to eight inches (using a wedge pillow or blocks under the bed frame) adds another layer of protection. Stacking regular pillows under your head alone doesn’t work as well because it bends you at the waist rather than tilting your whole torso.
Weight Loss and Long-Term Improvement
Carrying extra weight is one of the strongest risk factors for recurring heartburn, because abdominal fat increases pressure on the stomach and pushes acid upward. The good news is that even moderate weight loss can make a measurable difference, but the threshold is higher than most people expect.
A prospective study found that losing less than 5% of body weight didn’t significantly change heartburn symptoms. Women saw meaningful improvement after losing 5 to 10% of their starting weight. Men needed a loss of 10% or more before symptoms improved significantly. For someone weighing 200 pounds, that means losing at least 10 to 20 pounds before heartburn noticeably eases.
Heartburn vs. Heart Attack
Heartburn and heart attacks can feel similar enough that even experienced doctors sometimes can’t tell them apart without testing. Classic heartburn burns in the chest, shows up after eating or when lying down, comes with a sour taste in the mouth, and improves with antacids.
A heart attack more often feels like pressure, tightness, or squeezing in the chest that may spread to the neck, jaw, back, or arms. It can come with shortness of breath, cold sweats, lightheadedness, or sudden fatigue. Women are more likely than men to experience less obvious symptoms like jaw pain, back pain, or nausea without the classic crushing chest pain. If your chest discomfort doesn’t respond to antacids, came on suddenly during exertion, or is accompanied by sweating and shortness of breath, treat it as a medical emergency.