The fastest way to stop heartburn is to take an over-the-counter antacid, which neutralizes stomach acid on contact and typically brings relief within minutes. If you don’t have antacids on hand, a half teaspoon of baking soda dissolved in a glass of cold water works on the same principle. Beyond those two options, several other techniques can ease the burn quickly, and knowing which approach fits your situation helps you pick the right one.
Antacids Work Fastest
Chewable antacids (the calcium carbonate tablets you’ll find under brand names like Tums or Rolaids) are the quickest pharmacy option because they neutralize acid directly in your stomach. You chew and swallow, and the burning usually fades within a few minutes. They’re best for occasional, short-lived episodes.
If antacids aren’t cutting it, the next step up is an H2 blocker like famotidine. These reduce how much acid your stomach produces and start working within one to three hours. They last longer than antacids, often six to twelve hours, making them a better choice if your heartburn tends to linger or come back after dinner. Proton pump inhibitors (omeprazole, for example) are the strongest option but the slowest: they can take up to four days to reach full effect, so they’re not the right tool when you need relief right now.
The Baking Soda Fix
Baking soda is sodium bicarbonate, which is exactly what many commercial antacids contain. According to Mayo Clinic dosing guidelines, a half teaspoon of baking soda powder dissolved in a full glass of water every two hours can relieve heartburn. Don’t exceed five teaspoons in a single day. The taste isn’t pleasant, but it works fast because it directly neutralizes hydrochloric acid in your stomach.
This is a short-term fix, not a daily habit. Baking soda is high in sodium, so frequent use can raise blood pressure and disrupt your body’s electrolyte balance. If you’re reaching for it more than a couple of times a week, that’s a sign you need a longer-term approach.
Alginate Products: A Physical Barrier
Alginate-based treatments (sold under names like Gaviscon Advance) work differently from standard antacids. When the alginate mixes with your stomach acid, it creates a gel-like raft that floats on top of the acid pool in your stomach. This physical barrier keeps acid from splashing up into your esophagus. One study found that alginates are more effective than traditional antacids at treating reflux, likely because they address the mechanical problem rather than just the chemistry. If your heartburn hits when you bend over or lie down, an alginate product is especially useful.
Chew Gum After Eating
Chewing gum stimulates saliva production, and saliva is naturally alkaline. That extra saliva washes down into your esophagus and helps neutralize any acid sitting there. Research published in the Annals of Otology, Rhinology & Laryngology found that chewing gum for at least 10 minutes raised esophageal pH from 6.44 to 7.49, shifting it from mildly acidic to slightly alkaline. Bicarbonate gum produced the strongest effect, but regular sugar-free gum still helped. Chewing two pieces about 30 minutes after a meal, or at the first sign of symptoms, is a simple trick that costs almost nothing.
Change Your Position
Gravity is either your friend or your enemy with heartburn. If you’re lying flat, acid has an easy path from your stomach into your esophagus. Two position changes make an immediate difference:
- Stand or sit upright. Simply getting vertical lets gravity pull acid back down into your stomach. If you’ve been lounging on the couch after a big meal, sitting up straight can bring noticeable relief within minutes.
- Sleep on your left side with your head elevated. Research from Harvard Health found that acid clears from the esophagus much faster when people lie on their left side compared to their back or right side. A wedge pillow under your upper body adds even more protection. This combination is the best sleeping position for nighttime heartburn.
Avoid bending over or doing crunches when you feel the burn coming on. Any position that compresses your stomach pushes acid upward.
What Triggers Heartburn in the First Place
Fixing heartburn fast matters, but so does having fewer episodes. The most common triggers are eating large meals, lying down within two to three hours of eating, and consuming specific foods that relax the valve between your stomach and esophagus. Fatty or fried foods, chocolate, coffee, alcohol, mint, tomato sauce, and citrus are frequent culprits, though individual triggers vary. Tight clothing around the waist and smoking also weaken that valve.
Eating smaller meals, finishing dinner earlier in the evening, and identifying your personal trigger foods are the changes most likely to reduce how often you need a quick fix.
When Heartburn Might Be Something Else
Heartburn and a heart attack can feel uncomfortably similar. Typical heartburn causes a burning sensation in the chest, usually after eating or while lying down. It often comes with a sour taste in the mouth or a small amount of stomach contents rising into the throat, and it responds to antacids.
A heart attack, by contrast, feels more like pressure, tightness, or squeezing in the chest or arms that may spread to the neck, jaw, or back. It can also come with shortness of breath, cold sweats, lightheadedness, or sudden fatigue. Women are more likely than men to have jaw pain, back pain, or nausea rather than classic chest pressure. If your chest discomfort doesn’t improve with antacids, comes with any of these additional symptoms, or just feels different from your usual heartburn, call emergency services immediately.
Long-Term Relief Carries Its Own Risks
If heartburn becomes a weekly occurrence, you may consider longer-acting medications like proton pump inhibitors. These are effective, but they weren’t designed for indefinite use. Prolonged use has been linked to reduced absorption of certain vitamins and minerals, higher risk of bone thinning, and intestinal infections. That doesn’t mean they’re dangerous for a two-week course to get a flare under control. It does mean that staying on them for months or years without reassessing whether you still need them isn’t ideal. Lifestyle changes, losing even a modest amount of weight if you carry extra, and raising the head of your bed can sometimes replace the need for daily medication entirely.