The fastest way to relieve indigestion is a chewable antacid containing calcium carbonate or a similar mineral base, which can raise stomach pH and ease discomfort in as little as 5 to 6 minutes. If you don’t have an antacid on hand, a half teaspoon of baking soda dissolved in a glass of water works through the same acid-neutralizing mechanism. Beyond those immediate fixes, several other approaches can help within minutes to an hour depending on what’s causing your symptoms.
Chewable Antacids: The Fastest Option
Over-the-counter antacids that combine calcium and magnesium carbonates can start raising stomach pH within about 6 minutes of chewing them. Calcium carbonate on its own takes closer to 30 minutes to reach full effect in the esophagus, but you’ll typically feel some relief before that. These products work by directly neutralizing the acid already sitting in your stomach, which is why they act faster than anything else on the shelf.
The tradeoff is that antacids don’t last long. You get a few hours of relief at most. They’re designed for occasional, in-the-moment use. If you’re reaching for them daily, that’s a signal something else is going on. It’s also worth knowing that calcium-based antacids have an upper daily limit: adults under 50 should stay below 2,500 mg of total calcium per day, while adults over 51 should cap it at 2,000 mg. Exceeding those amounts regularly can cause a condition where calcium builds up in the blood and damages the kidneys.
Baking Soda: The Kitchen Shortcut
Plain baking soda (sodium bicarbonate) is essentially a stripped-down antacid. The Mayo Clinic lists the standard dose as half a teaspoon dissolved in a full glass of water, taken every two hours as needed. It neutralizes stomach acid on contact, so relief comes quickly.
There are a few important caveats. Baking soda is loaded with sodium, so it’s a poor choice if you have high blood pressure, heart disease, kidney problems, or are on a sodium-restricted diet. Don’t take it within one to two hours of other medications, because it can interfere with how your body absorbs them. And don’t pair it with large amounts of milk or dairy. Keep use to two weeks at most for any recurring issue.
H2 Blockers: Longer-Lasting but Slower
If your indigestion tends to linger or come back within a few hours, an H2 blocker like famotidine may be more useful than an antacid. These work differently: instead of neutralizing existing acid, they reduce how much acid your stomach produces in the first place. The onset takes about an hour after swallowing a tablet, with peak effects between one and three hours. The payoff is that the relief lasts 10 to 12 hours, far longer than any antacid.
For the fastest possible combination, some people take a chewable antacid for immediate relief and an H2 blocker at the same time so it kicks in as the antacid wears off. This one-two approach covers both the short and medium term.
Why Proton Pump Inhibitors Won’t Help Right Now
If you’ve seen ads for PPIs like omeprazole, you might wonder why they aren’t the go-to for fast relief. The reason is simple: they don’t work on demand. PPIs need to be taken 30 to 60 minutes before a meal, and they perform best when used consistently over days, not as a one-time fix. For an episode of indigestion that’s happening right now, they’re the wrong tool.
Ginger for Sluggish Digestion
Sometimes indigestion isn’t about too much acid. It’s about food sitting in your stomach too long, creating that heavy, bloated, uncomfortable feeling. Ginger directly addresses this. In a controlled study published in the World Journal of Gastroenterology, participants who consumed ginger before a meal emptied their stomachs about 24% faster than those given a placebo. The half-emptying time dropped from roughly 16 minutes to about 12 minutes.
You can get this effect from fresh ginger tea (a few thin slices steeped in hot water for five to ten minutes), ginger chews, or even ginger ale made with real ginger extract. The key is actual ginger, not just ginger flavoring. This works best for the bloating and fullness type of indigestion rather than the burning, acidic type.
Peppermint: Helpful for Cramping, Risky for Reflux
Peppermint oil relaxes the smooth muscle in your digestive tract. The menthol in peppermint blocks calcium channels in muscle cells, which prevents them from contracting. If your indigestion involves cramping, spasms, or a tight feeling in your upper abdomen, peppermint tea or a peppermint oil capsule can bring relief relatively quickly.
There’s an important catch, though. That same muscle-relaxing effect loosens the valve between your esophagus and stomach. If your primary symptom is burning or acid creeping up into your throat, peppermint can make things worse by letting more acid escape upward. Use it for crampy, pressure-type indigestion, not for heartburn.
Simple Positioning and Habit Fixes
A few physical changes can speed relief without any pills or remedies. If you’re lying down, sit up or stand. Gravity helps keep stomach acid where it belongs. Loosen any tight clothing around your waist, since pressure on the abdomen pushes stomach contents upward. Take a gentle walk if you can. Light movement stimulates the muscles that push food through your digestive system, which helps clear that overfull feeling.
Avoid lying down for at least two to three hours after eating. If indigestion hits at night, propping your upper body up at an angle (not just your head, but your whole torso) reduces the chance of acid creeping into your esophagus while you sleep.
When Indigestion Isn’t Just Indigestion
Most indigestion is exactly what it feels like: your stomach objecting to what or how much you ate. But chest discomfort from a heart attack can mimic indigestion closely enough that even experienced doctors sometimes can’t tell the difference without testing. The Mayo Clinic notes several features that distinguish the two.
Typical indigestion or heartburn produces a burning sensation in the chest or upper abdomen, usually after eating. It gets better with antacids, may come with a sour taste in the mouth, and worsens when you lie down or bend over. A heart attack, by contrast, tends to feel like pressure, tightness, or squeezing in the chest or arms that may spread to the neck, jaw, or back. It often comes with shortness of breath, cold sweats, sudden dizziness, or unusual fatigue.
If your chest discomfort doesn’t respond to an antacid, feels like pressure rather than burning, or comes with any of those additional symptoms, treat it as an emergency. Call 911 rather than waiting to see if it passes.