Most heartburn can be eased within seconds to minutes depending on the method you use. Calcium-based antacids neutralize stomach acid in under a minute, while simple position changes and home remedies can provide noticeable relief in just a few minutes without any medication at all. The key is matching the right approach to your situation, whether you’re at home with a full medicine cabinet or stuck somewhere with nothing on hand.
Antacids Work in Under a Minute
If you have chewable antacids available, they’re the fastest option. Calcium carbonate tablets (sold as Tums, Rolaids, and similar brands) begin neutralizing stomach acid within about 40 seconds of reaching your stomach. They work by directly reacting with hydrochloric acid, raising the pH in your stomach so the burning stops almost immediately.
Chew the tablets thoroughly rather than swallowing them whole. The more surface area exposed to your stomach contents, the faster they act. Relief typically lasts 30 to 60 minutes, so you may need a second dose if the heartburn returns.
Alginate Products Create a Physical Barrier
Alginate-based medications (like Gaviscon) take a different approach. When they mix with stomach acid, they form a gel-like raft that floats on top of your stomach contents, physically blocking acid from splashing up into your esophagus. They begin working right away and can be taken with a meal or immediately after. This makes them especially useful for heartburn that hits during or right after eating, since they address the mechanical problem of acid moving upward rather than just neutralizing it.
Baking Soda: The Pantry Fix
If you don’t have antacids at home, half a teaspoon of baking soda dissolved in a glass of cold water acts as a basic antacid. Sodium bicarbonate neutralizes acid on contact, so relief comes quickly. You can repeat the dose every two hours if needed, but don’t exceed five teaspoons in a single day. Baking soda is high in sodium and not meant for regular use. It’s a reasonable one-off solution, not a daily habit.
Change Your Position Immediately
Gravity is one of your best tools against heartburn, and it costs nothing. If you’re lying down, sit upright or stand. This alone can reduce the amount of acid reaching your esophagus within minutes.
If heartburn is hitting you at night, lie on your left side. In this position, your esophagus and its muscular valve sit higher than your stomach, letting acid drain away from the opening rather than pooling near it. Sleeping on your right side does the opposite, making reflux worse. A wedge pillow that elevates your head 6 to 12 inches (roughly a 30- to 45-degree angle) adds even more protection by keeping gravity working in your favor all night.
One thing to avoid: don’t bend over or lie flat after eating. Both positions push stomach contents toward the esophageal opening.
Chew Sugar-Free Gum
Chewing gum for 30 minutes after a meal can reduce heartburn symptoms. The chewing stimulates saliva production, and saliva naturally contains bicarbonate, which neutralizes acid in the esophagus. You also swallow more frequently while chewing, which pushes acid back down into the stomach where it belongs. One important caveat: avoid peppermint-flavored gum. Peppermint relaxes the muscular valve between your stomach and esophagus, which can make reflux worse. Stick with fruit or cinnamon flavors instead.
Loosen Tight Clothing
A tight belt, waistband, or shapewear puts pressure on your abdomen and can push stomach acid upward. If heartburn strikes after a meal, unbuttoning your pants or loosening your belt can provide surprisingly quick relief. This is especially relevant after large meals when your stomach is already distended.
H2 Blockers and PPIs for Longer Relief
Over-the-counter H2 blockers (like famotidine) don’t work as instantly as antacids, but they kick in within one to three hours and last significantly longer, usually 6 to 12 hours. They reduce acid production rather than just neutralizing what’s already there, making them a better choice if you know heartburn tends to come back throughout the day or night.
Proton pump inhibitors (PPIs like omeprazole) are the strongest option but the slowest. They can take up to four days to reach full effect, so they’re not useful for immediate relief. PPIs are designed for frequent, recurring heartburn rather than the occasional flare-up. If you’re reaching for antacids more than twice a week, an H2 blocker or PPI may be worth considering as a daily medication.
Ginger May Help, but Evidence Is Mixed
Ginger has a long reputation as a stomach soother, and there is some scientific basis for it. Compounds in ginger called gingerols appear to increase the rate at which food moves through the stomach, which can reduce the window for acid to reflux upward. One small study found that 1,650 mg of ginger per day improved reflux symptoms in participants. However, results across clinical trials have been inconsistent, and there’s no standardized dose that’s been proven to work reliably. A cup of ginger tea after a meal is unlikely to hurt and may help, but it shouldn’t replace proven treatments if your heartburn is severe.
Foods That Make Heartburn Worse
While you’re dealing with active heartburn, knowing what triggered it can help you avoid a repeat episode. Several common foods directly relax the muscular valve at the top of your stomach, letting acid escape more easily:
- Coffee (caffeinated or decaf) relaxes the valve
- Chocolate contains a compound called methylxanthine, similar to caffeine, that has the same effect
- Peppermint, garlic, and onions all relax the valve
- Fatty, spicy, or fried foods both relax the valve and slow stomach emptying, keeping acid around longer
Eating smaller meals also helps. A very full stomach puts pressure on that valve, making it more likely to let acid through regardless of what you ate.
When Heartburn Might Be Something Else
Heartburn and heart attacks can feel remarkably similar. Even experienced doctors sometimes can’t tell them apart without testing. Typical heartburn causes a burning sensation in the chest, usually after eating, and improves with antacids. It often comes with a sour taste in the mouth or a small amount of stomach contents rising into the throat.
A heart attack is more likely to involve pressure, tightness, or squeezing in the chest that spreads to the neck, jaw, or arms. Shortness of breath, cold sweats, sudden dizziness, and unusual fatigue are red flags that point away from simple heartburn. Women are more likely than men to experience jaw pain, back pain, and nausea as heart attack symptoms rather than classic chest pressure. If you have persistent chest pain and aren’t sure what’s causing it, especially if it comes with any of those additional symptoms, call 911. Both heartburn and heart attacks can produce pain that comes and goes, so the fact that it eases temporarily doesn’t rule out a cardiac event.