The fastest way to get rid of heartburn is to take an over-the-counter antacid, which works within minutes by neutralizing stomach acid on contact. If you don’t have antacids on hand, a few home remedies and body positioning changes can also bring noticeable relief in a short time. Here’s what actually works, how fast each option kicks in, and what to skip.
Antacids Are the Fastest Option
Chewable antacids containing calcium carbonate or magnesium hydroxide are the quickest over-the-counter fix. They neutralize acid directly in your stomach and start working within a few minutes. The trade-off is that they’re short-acting, typically wearing off in one to three hours, so they work best for occasional flare-ups rather than ongoing problems.
If your heartburn tends to linger, an H2 blocker like famotidine is a step up in duration but slower to kick in, taking roughly 30 to 90 minutes. For a fast burn that you know will come back, taking an antacid and an H2 blocker together covers both the immediate relief and the next several hours.
One common mistake: reaching for a proton pump inhibitor (like omeprazole) expecting quick results. These take one to four days to reach full effect. They’re designed for frequent, recurring heartburn, not for putting out a fire right now. Cleveland Clinic specifically recommends antacids or H2 blockers instead when you need relief after a spicy meal or sudden flare-up.
Baking Soda: A Kitchen Cabinet Antacid
If you don’t have antacids at home, half a teaspoon of baking soda dissolved in a full glass of water acts as a makeshift antacid. Sodium bicarbonate is alkaline and neutralizes stomach acid quickly, often within minutes. You can repeat this dose every two hours if needed, but don’t exceed five teaspoons in a single day.
There are real limits to this approach. Baking soda is high in sodium, so it’s a poor choice if you’re watching your salt intake or managing high blood pressure, kidney disease, or heart problems. Don’t take it within one to two hours of other medications, since it can interfere with absorption. And don’t mix it with large amounts of milk, which can cause a separate set of side effects. If you find yourself relying on baking soda more than a couple of weeks, that’s a sign you need a different plan.
Foods That Can Help Right Now
Certain alkaline foods can help offset stomach acid if you eat them during a flare-up. According to Johns Hopkins Medicine, good options include bananas, melons, cauliflower, fennel, and nuts. These have a higher pH that helps counterbalance acidity in the stomach and esophagus. A banana is probably the most practical choice when heartburn hits, since it’s soft, easy to eat, and widely available.
What you want to avoid in the moment is anything acidic, fatty, or spicy. Tomato-based foods, citrus, chocolate, and fried dishes will all make things worse. If you just ate one of these and that’s what triggered the burn, eating a small alkaline snack on top of it can still take the edge off.
Change Your Position
Gravity is a surprisingly effective tool against heartburn. If you’re lying down when the burn hits, sit upright or stand. This alone can reduce the amount of acid reaching your esophagus. Avoid bending over, which compresses your abdomen and pushes acid upward.
If heartburn strikes at night, sleeping on your left side makes a measurable difference. Research from Amsterdam UMC found that this position places the stomach below the esophagus, making it harder for acid to travel upward. It also allows any acid already in the esophagus to drain back into the stomach more quickly. Sleeping on the right side does the opposite, positioning the stomach above the esophageal opening and encouraging reflux. Elevating the head of your bed by six inches (using a wedge pillow or blocks under the bed frame, not just extra pillows) provides additional relief by keeping your upper body on an incline.
Loosen Tight Clothing
This one sounds too simple to matter, but tight waistbands genuinely worsen heartburn. Research published in Gastroenterology found that abdominal compression from a waist belt increases the number of reflux episodes tied to relaxation of the valve between your esophagus and stomach. The belt doesn’t just squeeze your midsection; it impairs your esophagus’s ability to clear acid back down. If you’re wearing a tight belt, high-waisted jeans, or shapewear when heartburn hits, loosening or removing them can provide noticeable relief within minutes.
Chew Sugar-Free Gum
Chewing gum stimulates saliva production, and saliva is naturally slightly alkaline. Swallowing more saliva helps wash acid out of the esophagus and neutralize what’s left behind. A 2005 study found that chewing sugar-free gum for 30 minutes after eating reduced acid reflux symptoms. It won’t eliminate severe heartburn on its own, but it’s a useful add-on when you’re already sitting upright and waiting for an antacid to fully kick in. Stick with sugar-free varieties, since mint-flavored gum can actually relax the valve at the top of your stomach and make reflux worse in some people.
What Not to Reach For
Milk is a popular home remedy that deserves a closer look. While a sip of cold milk might feel soothing initially, the fat and protein in whole milk stimulate additional acid production once they hit the stomach. If you’re going to try milk, stick to skim, but an antacid or baking soda will outperform it.
Lying flat on your back, drinking alcohol, or smoking a cigarette are all things that will make heartburn worse. Alcohol and nicotine relax the sphincter that keeps acid in your stomach, and lying flat removes gravity from the equation entirely.
Heartburn vs. Something More Serious
Heartburn and heart attacks can feel remarkably similar. Even experienced doctors can’t always tell the difference based on symptoms alone. Typical heartburn causes a burning sensation in the chest, usually after eating, and responds to antacids. It may come with a sour taste in your mouth or a small amount of acid rising into your throat.
A heart attack is more likely to cause pressure, tightness, or squeezing in the chest that spreads to the neck, jaw, or back. It often comes with shortness of breath, cold sweats, lightheadedness, or sudden fatigue. Women are more likely than men to experience jaw or back pain, nausea, and shortness of breath rather than classic chest pressure. If your chest pain is persistent and you’re not sure it’s heartburn, call 911. Even if the pain goes away on its own after a few hours, that still warrants a call to your doctor, because both heartburn and early heart attacks can produce symptoms that temporarily subside.