A glass of water is the fastest thing you can reach for. Plain water raises stomach pH in about one minute, though the effect only lasts around three minutes. For more sustained relief, a chewable antacid containing calcium and magnesium carbonate can start neutralizing acid in under six minutes. Beyond those two, several other strategies can calm your stomach within 15 to 30 minutes, depending on what’s causing the discomfort.
Water: The Fastest but Shortest Fix
In a study testing several remedies head to head, a single glass of water (about 7 ounces) raised stomach pH above the discomfort threshold within one minute in 10 out of 12 people. That makes it the single fastest way to dilute stomach acid. The catch is that the effect fades after roughly three minutes as your stomach resumes normal acid production. Still, if you’re in the middle of a burning episode and have nothing else on hand, drinking water buys you a brief window of relief and can be repeated while you find a longer-lasting option.
Chewable Antacids: Fast and Practical
Calcium-magnesium carbonate tablets (the kind you chew, like Tums or Rolaids) neutralize acid in about 6 minutes on average. That’s dramatically faster than acid-reducing pills like famotidine, which take around 90 minutes to kick in. The tradeoff is duration: antacids wear off in about 60 minutes, while famotidine keeps working for up to 9 hours.
If your indigestion tends to come and go quickly, antacids are the better choice for speed. If it lingers for hours, especially after a large meal, famotidine or a similar acid reducer is more useful, but you’ll need to wait it out or bridge the gap with an antacid first. Taking both is a common strategy: the antacid handles the first hour while the acid reducer ramps up.
One thing to watch: each chewable antacid tablet delivers roughly 270 to 400 mg of calcium. The safe daily upper limit for adults is 2,500 mg (dropping to 2,000 mg after age 50), so you shouldn’t be chewing through an entire roll in one sitting.
Baking Soda in a Pinch
If you don’t have antacid tablets, half a teaspoon of baking soda stirred into a full glass of cold water works as a homemade antacid. Sodium bicarbonate neutralizes acid on contact, so relief comes quickly. You can repeat this every two hours if needed, but keep total intake under 5 teaspoons in a 24-hour period. The taste isn’t pleasant, and people on sodium-restricted diets should skip this option entirely since baking soda is pure sodium.
Ginger for Sluggish Digestion
When your indigestion feels more like heavy fullness, nausea, or food sitting like a brick in your stomach, the problem may be slow digestion rather than excess acid. Ginger speeds up gastric emptying. In a controlled trial, 1.2 grams of ginger (about a half-teaspoon of ground ginger, or a thumb-sized piece of fresh root) reduced the time it took the stomach to empty by roughly 25%, cutting the half-emptying time from around 16 minutes to 12 minutes.
Ginger tea, ginger chews, or even ginger ale with real ginger can help. The effect isn’t as immediate as an antacid, but within 20 to 30 minutes you should feel food moving along instead of sitting in your upper stomach.
Peppermint for Cramping and Bloating
If your indigestion comes with a tight, crampy feeling or bloating, peppermint can help by relaxing the smooth muscle in your digestive tract. It works by blocking calcium from entering muscle cells in the gut wall, which is the same basic mechanism used by some prescription muscle relaxants. Peppermint tea is the easiest form. Enteric-coated peppermint oil capsules are another option, designed to dissolve in the intestine rather than the stomach.
One caution: peppermint relaxes the valve between your stomach and esophagus too. If your main symptom is burning or acid creeping up your throat, peppermint can make that worse. Save it for bloating and cramping, not for acid-heavy symptoms.
Body Position Matters More Than You’d Think
If indigestion hits after a meal, resist the urge to lie down. Staying upright lets gravity keep stomach contents where they belong. If you need to rest, lie on your left side. When you lie on your right side, your stomach ends up positioned above your esophagus, making it easier for acid to flow upward. Left-side positioning reverses that arrangement and significantly reduces reflux episodes.
Going for a gentle walk after eating also helps. It stimulates digestion without the jostling that comes from vigorous exercise, which can make things worse.
A Breathing Technique That Actually Works
This one sounds unlikely, but slow, deep belly breathing measurably reduces acid reflux. In a randomized controlled trial, people who practiced diaphragmatic breathing after a meal had an average of 0.36 reflux events compared to 2.60 in those who didn’t. The reason: deep belly breaths increase pressure around the valve at the top of your stomach, nearly doubling the squeeze that keeps acid from escaping (42 mm Hg during deep breathing versus 23 mm Hg during normal breathing).
The technique is simple. Breathe in slowly through your nose, letting your belly expand rather than your chest. Exhale slowly. Repeat for 5 to 10 minutes. This works best for the burning, reflux-type indigestion rather than bloating or nausea.
Matching the Remedy to the Symptom
Indigestion isn’t one thing, and picking the right fast fix depends on what you’re actually feeling:
- Burning in your chest or upper stomach: antacids, baking soda, water, or deep breathing
- Heavy fullness or nausea after eating: ginger, gentle walking, staying upright
- Cramping or bloating: peppermint tea, gentle movement
- Nighttime reflux: left-side sleeping, elevating the head of your bed
Symptoms That Aren’t Indigestion
Indigestion and heart attacks can feel surprisingly similar. Both can cause chest pressure, nausea, and upper abdominal pain. Symptoms that point toward a cardiac event rather than a stomach problem include pressure or squeezing that spreads to your neck, jaw, or arm, shortness of breath, cold sweats, sudden dizziness, or unusual fatigue. If those symptoms appear together, especially during physical exertion or stress, treat it as an emergency rather than reaching for an antacid.