The fastest way to relieve acid reflux is to take a chewable antacid containing calcium carbonate, which neutralizes stomach acid within minutes. If you don’t have antacids on hand, standing upright, loosening tight clothing, and sipping a small glass of cold water with half a teaspoon of baking soda can also bring relief quickly. Most people searching this are mid-flare and want options they can use right now, so here’s what works and how fast each approach kicks in.
Over-the-Counter Options Ranked by Speed
Not all heartburn medications work on the same timeline. Chewable antacids like calcium carbonate (Tums, Rolaids) are the fastest, neutralizing acid on contact as soon as they reach your stomach. You can feel the difference within a few minutes.
Alginate-based products like Gaviscon work almost as fast but through a different mechanism. When the liquid hits your stomach acid, it forms a foam raft that floats on top of your stomach contents, creating a physical barrier that keeps acid from splashing up into your esophagus. This raft forms within seconds and lasts longer than a standard antacid alone.
H2 blockers like famotidine (Pepcid) take about an hour to provide relief, but the effects last 4 to 10 hours, making them a better choice if you want to prevent a second wave. Proton pump inhibitors (omeprazole, Prilosec) take one to four days to reach full effect, so they’re not useful for a flare happening right now.
Baking Soda as a Quick Home Remedy
Plain baking soda (sodium bicarbonate) is a legitimate antacid that most people already have in their kitchen. Mix half a teaspoon into a full glass of cold water and drink it. It neutralizes stomach acid directly, and you’ll likely feel relief within minutes. The Mayo Clinic lists a safe adult dose as half a teaspoon in water every two hours, with a maximum of five teaspoons per day. Don’t use this approach for more than two weeks straight. If you find yourself reaching for it regularly, that’s a sign you need a longer-term solution.
Body Position Makes a Real Difference
Gravity is your ally during a reflux episode. If you’re lying down, sit up or stand. This alone can reduce the burning sensation noticeably. Avoid bending over at the waist, which compresses your stomach and pushes acid upward.
If you need to stay in bed, lie on your left side. In this position, your esophagus and the valve at the top of your stomach sit higher than the stomach itself, which lets acid drain back down more quickly. Lying on your right side does the opposite, positioning the valve below the acid line and making reflux worse. Elevating the head of your bed by 6 to 8 inches (using a wedge pillow or blocks under the bedframe) also helps by keeping gravity working in your favor all night.
Two Surprising Tricks That Work Fast
Chew sugar-free gum. Chewing gum floods your mouth with saliva, which naturally contains bicarbonate, a mild acid buffer. The extra saliva washes acid back down from your esophagus and dilutes what’s in your stomach. If you’re stuck without medication, a piece of gum for 20 to 30 minutes after eating can meaningfully reduce symptoms. Avoid peppermint-flavored gum, though, since peppermint relaxes the valve between your stomach and esophagus.
Try slow belly breathing. This sounds too simple to work, but the valve at the top of your stomach is partly controlled by your diaphragm. Research measuring the pressure at this valve found that slow abdominal breathing increased its closing pressure by about 22 mmHg, a significant jump. Sit upright, place one hand on your chest and one on your belly, and breathe slowly so only the belly hand moves. Five to ten minutes of this can tighten the valve enough to reduce the splash of acid into your esophagus.
Stop These Triggers During a Flare
While you’re actively dealing with reflux, certain foods and drinks will make it worse by relaxing the valve at the top of your stomach or increasing acid production. The most common offenders to avoid right now:
- Coffee and caffeinated drinks
- Chocolate
- Peppermint
- Carbonated beverages
- Alcohol
- Tomato-based sauces and citrus fruits
- Fatty or fried foods
If your reflux started after a big meal, don’t eat anything else for at least two to three hours. A full stomach puts more pressure on that valve, and adding food on top of food only extends the episode. Wearing tight pants or a belt cinched around your waist creates the same upward pressure, so loosening your clothing can provide some immediate relief.
What About Ginger and Apple Cider Vinegar?
Ginger has real digestive benefits. A natural compound in ginger root speeds up gastric motility, which is the rate at which food leaves your stomach. Since a full, slow-moving stomach is a major reflux trigger, ginger tea or a small piece of fresh ginger can help your stomach empty faster and reduce upward pressure. It’s not as immediately powerful as an antacid, but it’s a reasonable supporting option.
Apple cider vinegar is a different story. Despite its popularity on wellness blogs, Harvard Health confirms there is no published clinical research supporting its use for heartburn. Since it’s an acid itself, it can irritate an already inflamed esophagus and make things worse. Skip it.
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 burns in the chest, usually starts after eating or lying down, comes with a sour taste in the mouth, and improves with antacids. A heart attack more often involves sudden crushing chest pressure, difficulty breathing, and pain that radiates to the jaw, neck, or arm, especially during physical exertion.
If your chest pain doesn’t respond to antacids within 15 to 20 minutes, feels like pressure or squeezing rather than burning, or comes with shortness of breath, sweating, or lightheadedness, treat it as a potential cardiac event and call emergency services. The overlap in symptoms is real, and erring on the side of caution is always the right call.