Baking soda can provide fast, temporary relief from acid reflux. When dissolved in water, it neutralizes stomach acid on contact, which is why it has been used as a home antacid for generations. Half a teaspoon mixed into four ounces of water is the standard dose, and relief typically comes within minutes. But baking soda works best as an occasional fix, not a regular strategy.
How Baking Soda Neutralizes Stomach Acid
Baking soda (sodium bicarbonate) is a basic compound. When it meets hydrochloric acid in your stomach, a straightforward chemical reaction occurs: the acid is neutralized, producing water, salt, and carbon dioxide gas. That gas is why you’ll likely burp after drinking it. The reaction happens quickly, which is what makes baking soda feel so effective in the moment.
This is the same principle behind many over-the-counter antacid tablets. The difference is that commercial antacids are formulated to control how fast and how much acid gets neutralized, while baking soda from the box delivers a larger, less controlled dose of alkalinity all at once.
How to Take It Safely
The National Library of Medicine lists this as the recommended approach for adults: dissolve half a level teaspoon in half a glass (four ounces) of cold water and drink it after the powder has fully dissolved. You can repeat this every two hours if needed, but adults under 60 should not exceed six half-teaspoon doses in 24 hours. If you’re 60 or older, the limit drops to three doses per day.
A few practical tips matter here. Use a level half teaspoon, not a heaping one. Make sure the powder is completely dissolved before you drink it. Taking it on a very full stomach can increase discomfort because of the gas produced. And don’t use it for more than two weeks straight without medical guidance.
Why It’s Not a Long-Term Solution
Baking soda neutralizes the acid that’s already there, but it does nothing to prevent more acid from being produced. The relief fades relatively quickly compared to medications designed for acid reflux, which either reduce acid production over hours or create a physical barrier that keeps acid from reaching your esophagus. If you find yourself reaching for baking soda multiple times a week, that pattern suggests your reflux needs a different approach.
There’s also the sodium load to consider. Half a teaspoon of baking soda contains roughly 630 milligrams of sodium, which is more than a quarter of the daily limit recommended for most adults. Six doses in a day would add nearly 3,800 milligrams of sodium to your diet, well above the 2,300-milligram daily ceiling. For anyone watching their salt intake, this adds up fast.
Risks of Taking Too Much
Overdoing baking soda can shift your blood chemistry toward a condition called metabolic alkalosis, where your body becomes too alkaline. Early symptoms include nausea, vomiting, diarrhea, a persistent feeling of fullness, and irritability. More serious signs involve muscle spasms, muscle weakness, and convulsions. If vomiting and diarrhea become severe, the resulting dehydration and electrolyte imbalances can trigger heart rhythm disturbances.
These complications are rare at recommended doses but become a real concern when people treat baking soda casually because it’s a kitchen staple. The fact that it’s natural and inexpensive can create a false sense that more is harmless.
Who Should Avoid Baking Soda for Reflux
Several groups face elevated risks from sodium bicarbonate:
- People with high blood pressure are sensitive to the high sodium content, which can raise blood pressure further.
- People with kidney disease may not be able to clear the extra sodium and bicarbonate efficiently, increasing the chance of dangerous electrolyte shifts.
- People with heart failure can experience fluid retention from the sodium, worsening their condition.
- Pregnant women should avoid it due to the sodium load and potential effects on fluid balance.
- Children under 12 should not take it as an antacid without a doctor’s direction.
Baking Soda vs. Store-Bought Antacids
Over-the-counter antacids use compounds like calcium carbonate or magnesium hydroxide to do essentially the same job: neutralize acid. The advantage of commercial antacids is dosing precision. Each tablet or chew delivers a measured amount, and many include ingredients that buffer the reaction so it lasts longer and produces less gas. Some also coat the esophagus, adding a layer of relief baking soda doesn’t provide.
Baking soda’s advantage is availability. If it’s midnight and you have nothing else in the house, half a teaspoon in water is a reasonable stopgap. But if reflux is a recurring problem, even basic over-the-counter options offer better control with fewer side effects per dose.
When Occasional Reflux Becomes Something More
Acid reflux that happens more than twice a week generally qualifies as gastroesophageal reflux disease (GERD). At that frequency, the repeated acid exposure can irritate and damage the lining of your esophagus over time. GERD responds better to medications that reduce acid production at the source, either the short-term options you can buy over the counter or prescription-strength versions for more persistent cases.
If your reflux comes with difficulty swallowing, unintentional weight loss, chest pain, or a chronic cough, those symptoms point to something that baking soda simply can’t address. Frequent reflux that doesn’t improve with basic lifestyle changes, like eating smaller meals, avoiding late-night eating, and sleeping with your head elevated, is worth getting evaluated.