The fastest way to calm acid reflux is to take a liquid antacid, which neutralizes stomach acid within minutes. If you don’t have one on hand, half a teaspoon of baking soda dissolved in a glass of water works as a quick substitute. Beyond what you swallow, how you position your body and what you stop eating in the moment can make a noticeable difference in how quickly the burning fades.
Antacids Work Fastest
Over-the-counter antacids neutralize the acid already sitting in your stomach, and they work within minutes. Liquid antacids act more quickly than chewable tablets, so if you have both options, reach for the liquid first. The relief typically lasts a few hours, which is enough to get you through a meal or let you fall asleep.
Alginate-based products (sold under brand names like Gaviscon) take a slightly different approach. When the alginate mixes with your stomach acid, it forms a gel-like raft that floats on top of the acid and physically blocks it from rising into your esophagus. This makes alginates especially useful if your reflux hits when you lie down or bend over.
The Baking Soda Option
If you don’t have antacids at home, plain baking soda (sodium bicarbonate) is a reasonable backup. Dissolve half a teaspoon in a full glass of water and drink it. It neutralizes acid the same way a commercial antacid does. You can repeat this every two hours if needed, but don’t exceed five teaspoons in a single day, and don’t rely on it for more than two weeks. Overuse can cause its own problems, including disrupting the acid-base balance in your blood. This is a stopgap, not a routine fix.
Change Your Position
Gravity is one of the simplest tools you have. If you’re lying flat when reflux strikes, sit upright or stand. This alone lets acid drain back down into your stomach instead of pooling in your esophagus.
If you need to stay in bed, lie on your left side. This works because of anatomy: when you’re on your left, your esophagus and the valve at its base sit higher than your stomach, so acid drains away from the opening more quickly. Right-side sleeping does the opposite and tends to make reflux worse. 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. Propping yourself up with regular pillows doesn’t work as well because it bends your body at the waist rather than tilting your whole torso.
Stop the Trigger Mid-Episode
If you’re eating or drinking something when reflux flares, stop. Certain foods and drinks relax the muscular valve between your esophagus and stomach, allowing acid to escape upward. The most common offenders are chocolate, peppermint, coffee, alcohol, fatty or fried foods, and citrus. These don’t just irritate the lining; they physically weaken the valve’s ability to stay shut and slow digestion so food sits in your stomach longer.
Loosening tight clothing around your waist can also help. A snug belt or waistband puts pressure on your stomach and pushes its contents upward.
Chewing Gum After a Meal
This one sounds odd, but chewing sugar-free gum for 30 minutes after eating can reduce reflux symptoms. Chewing stimulates saliva production, and saliva naturally contains bicarbonate, a mild base that helps neutralize acid that has crept into your esophagus. The swallowing motion also helps push acid back down. It won’t stop a severe episode on its own, but it’s a useful add-on when you don’t have medication nearby.
When You Need More Than Quick Fixes
If you’re reaching for antacids more than twice a week, the problem has likely moved beyond occasional heartburn. Two categories of stronger medication are available over the counter, and they work differently from antacids.
H2 blockers (like famotidine, sold as Pepcid) reduce how much acid your stomach produces. Famotidine starts working in about an hour and lasts around 12 hours. Taking it 15 to 60 minutes before a meal you know will trigger reflux is an effective preventive strategy. Proton pump inhibitors, or PPIs (like omeprazole, sold as Prilosec), are more powerful but slower. They can take one to four days to reach full effect, so they’re not the right choice when you need relief right now. PPIs are better suited for people with frequent reflux who need steady, all-day acid suppression.
The distinction matters: antacids neutralize acid that’s already there, H2 blockers reduce acid production within an hour, and PPIs provide the deepest suppression but need days to kick in. For fast relief today, antacids or famotidine are your best bets. For long-term control, PPIs are more effective.
Signs That Something More Serious Is Happening
Most acid reflux is uncomfortable but harmless. A few symptoms, however, signal that something beyond standard reflux may be going on. Difficulty swallowing, where food feels like it’s getting stuck on the way down, is one. Non-burning chest pain that radiates to your back is another, especially because it can mimic heart-related pain. Unexplained weight loss, persistent coughing or hoarseness, shortness of breath, or increased salivation paired with reflux all warrant a closer look. If your symptoms don’t improve with the strategies above, or they keep returning despite treatment, that pattern itself is a reason to get evaluated.