The fastest way to get rid of heartburn is to take a liquid antacid. These work within minutes by directly neutralizing stomach acid, raising the pH in your stomach almost immediately. If you don’t have antacids on hand, a few simple body-position changes and household remedies can also bring relief in under 10 minutes.
Liquid Antacids Work Fastest
Over-the-counter antacids containing calcium carbonate or magnesium hydroxide are the quickest option at any pharmacy or grocery store. They bind directly to stomach acid, raising the pH in your stomach within minutes of swallowing. Liquid formulations work faster than chewable tablets because they spread across the stomach lining more quickly and start buffering acid right away.
The tradeoff is that relief doesn’t last long. Most antacids keep symptoms at bay for anywhere from a few minutes to about an hour. They’re best used as a rescue remedy for an episode that’s already happening, not as a long-term strategy. If you find yourself reaching for them more than a couple of times a week, that’s a sign something deeper is going on.
Baking Soda as a Quick Home Remedy
If you don’t have antacids at home, baking soda (sodium bicarbonate) works on the same principle. Mix half a teaspoon into a full glass of cold water and drink it. It neutralizes acid on contact, so relief comes fast. You can repeat the dose every two hours if needed, but don’t exceed five teaspoons in a single day.
There’s an important limitation: baking soda is loaded with sodium. If you have high blood pressure, kidney disease, heart disease, or you’re on a sodium-restricted diet, skip this one entirely. It can cause your body to retain water, which worsens those conditions. Even for healthy adults, baking soda is a one-off fix. Don’t use it for more than two weeks straight. If heartburn keeps coming back, that points to a pattern that needs a different approach.
Change Your Position Right Now
Your body position has a surprisingly large effect on how quickly acid clears from your esophagus. If you’re lying down, sit up or stand. Gravity alone helps pull acid back down into your stomach. If heartburn hit while you were sleeping or resting, prop your upper body up so your chest is higher than your stomach.
When you do lie down, choose your left side. Research from Amsterdam UMC found that sleeping on the left side positions the stomach below the esophagus, making it physically harder for acid to travel upward. Left-side sleeping also helped acid that had already reached the esophagus drain back into the stomach more quickly. Right-side sleeping does the opposite, so if you’re currently on your right side during a heartburn episode, rolling over can make a noticeable difference within minutes.
Chew a Piece of Sugar-Free Gum
This one sounds too simple, but it’s backed by solid evidence. Chewing gum stimulates saliva production, and saliva is mildly alkaline. When you swallow more frequently, you push that saliva down into your esophagus, washing acid back toward your stomach. A study from King’s College London measured esophageal acid levels after a meal designed to trigger reflux. Participants who chewed sugar-free gum for 30 minutes after eating had significantly less acid exposure in their esophagus compared to when they skipped the gum. The amount of time their esophagus spent in an acidic state dropped from 5.7% to 3.6%.
This won’t knock out severe heartburn the way an antacid will, but it’s a genuinely useful tool when you’re caught without medication, especially after a big meal.
Alginate Barriers: A Different Kind of Relief
Alginate-based products (sold under brand names like Gaviscon) take a unique approach. Instead of just neutralizing acid, they create a gel-like raft that floats on top of your stomach contents. This physical barrier sits between your stomach and esophagus, blocking acid from splashing upward. Think of it like a lid made of gel. These products also contain some antacid, so you get both immediate acid neutralization and a longer-lasting protective layer.
Alginates are especially useful if your heartburn tends to hit after meals or when you lie down, since those are the moments when stomach contents are most likely to push upward past the valve at the top of your stomach.
What Not to Do During an Episode
Some common habits make an active heartburn episode worse. Avoid these while you’re trying to get relief:
- Don’t lie flat. This removes gravity from the equation and lets acid pool in your esophagus.
- Don’t eat chocolate or drink coffee. Both contain compounds called methylxanthines that relax the muscular valve between your stomach and esophagus, letting more acid escape upward.
- Don’t bend over. Bending at the waist compresses your stomach and forces contents toward your esophagus.
- Don’t eat more food. Your stomach responds to food by producing more acid, which is the last thing you need right now.
- Don’t drink alcohol or smoke. Both relax the lower esophageal valve and increase acid production.
Why H2 Blockers and PPIs Won’t Help Right Now
If you’re looking for instant relief, acid-reducing pills like famotidine or omeprazole aren’t the right tool for this moment. Famotidine (an H2 blocker) takes roughly an hour or more to reach its full effect. Proton pump inhibitors like omeprazole can take days of consistent use before they meaningfully reduce acid production. These medications are designed to prevent heartburn over time, not stop an episode that’s already happening. Research comparing antacids to famotidine found that antacids improved symptoms more quickly and to a greater degree within the first hour.
That said, if you’re getting heartburn several times a week, these longer-acting medications become important. They address the root problem rather than just mopping up acid after the fact.
Loosening Tight Clothing Helps
Anything that puts pressure on your abdomen can push stomach contents upward. If you’re wearing a tight belt, fitted waistband, or shapewear, loosen or remove it. This won’t cure heartburn on its own, but it reduces the mechanical pressure that’s contributing to acid moving in the wrong direction. Combined with sitting upright, it can speed up how quickly your other remedies take effect.
When Chest Pain Isn’t Heartburn
Heartburn and heart attacks can feel remarkably similar. Even experienced doctors sometimes can’t distinguish them without testing. Typical heartburn causes a burning sensation in the chest, usually after eating, often with a sour taste in the mouth. It gets better with antacids.
Heart attack symptoms overlap but tend to include pressure or squeezing in the chest that may spread to the neck, jaw, or arms. Cold sweats, sudden dizziness, shortness of breath, and unusual fatigue are warning signs that point away from heartburn and toward something cardiac. If your chest pain doesn’t respond to antacids, came on during physical activity rather than after a meal, or is accompanied by any of those additional symptoms, treat it as a medical emergency.