Is Baking Soda Safe To Drink?

Drinking baking soda mixed with water is a practice some people use for heartburn, athletic performance, or general health claims. The short answer is that it can be safe for some adults in small, occasional doses, but it carries real risks and is not something to take casually. Baking soda is sodium bicarbonate, and when dissolved in water, it acts as an antacid that can temporarily neutralize stomach acid. However, consuming too much, taking it too often, or using it when you have certain health conditions can lead to serious complications like electrolyte imbalances, stomach rupture, or metabolic alkalosis.

What Does Baking Soda Do Inside Your Body?

Baking soda is a base, meaning it sits at the opposite end of the pH scale from acid. When you drink it dissolved in water, it reacts with the hydrochloric acid in your stomach. The chemical reaction produces water, salt, and carbon dioxide gas. This neutralization is why it can provide quick relief from occasional heartburn or indigestion.

The carbon dioxide gas is why people often burp after drinking it. The salt is absorbed into your bloodstream, and this is where the risks begin. Your kidneys work to filter out the extra sodium and bicarbonate, but they can only handle so much at once. If you push more bicarbonate into your system than your kidneys can clear, your blood pH starts to rise. This condition is called metabolic alkalosis, and it can disrupt how your muscles, nerves, and heart function.

Most people do not realize that baking soda is roughly 25% sodium by weight. One teaspoon contains about 1,200 milligrams of sodium. The American Heart Association recommends limiting sodium to no more than 2,300 milligrams per day, with an ideal limit of 1,500 milligrams for most adults. A single teaspoon of baking soda delivers a significant portion of that daily allowance in one gulp.

Is Baking Soda Safe To Drink for Heartburn?

Baking soda can neutralize stomach acid quickly, which is why it appears in some commercial antacid products. For occasional heartburn, a single small dose may provide relief. The standard recommendation found in clinical references is to dissolve half a teaspoon of baking soda in at least 4 ounces of water and drink it slowly. You should not repeat this dose more than every two hours, and you should not take more than seven half-teaspoon doses in a 24-hour period.

That dosing guidance only applies to healthy adults. It does not apply to children, pregnant women, or people with certain medical conditions. If you have high blood pressure, kidney disease, heart failure, or liver disease, the sodium load is dangerous. If you are on a low-sodium diet for any reason, you should not drink baking soda at all.

Regular use for chronic heartburn is not a good idea. Over-the-counter antacids like calcium carbonate or magnesium hydroxide are formulated with buffers and are generally safer for repeated use. Baking soda is a blunt instrument. It works fast, but it also spikes your sodium levels and can cause rebound acid production, meaning your stomach may produce even more acid after the baking soda wears off.

Can Drinking Baking Soda Improve Athletic Performance?

Some athletes use sodium bicarbonate to buffer lactic acid buildup during high-intensity exercise. This practice is called soda loading, and it is documented in sports science literature. The theory is sound: intense exercise produces hydrogen ions that make your muscles more acidic, and bicarbonate can help clear them. Some research has shown small performance improvements in events lasting one to several minutes, like rowing sprints or 400-meter runs.

However, the side effects are substantial. The most common are severe stomach cramps, nausea, vomiting, and diarrhea. These gastrointestinal issues affect a significant number of people who try soda loading, and they can easily wipe out any performance benefit. There is no standard dose that works for everyone, and athletes typically experiment with amounts ranging from 0.2 to 0.3 grams per kilogram of body weight, taken 60 to 90 minutes before exercise.

This is not a practice to try casually. The margin between a helpful dose and a harmful one is narrow. If you are considering it for competition, you should test it during training sessions first, under supervision, and only if you have no underlying health conditions. For most recreational exercisers, the risks outweigh the benefits.

What Are the Risks of Drinking Baking Soda?

The most immediate risk is consuming too much at once. A large dose of baking soda can cause the stomach to expand rapidly with carbon dioxide gas. In rare cases, this has led to gastric rupture, a medical emergency where the stomach wall tears. This is not a theoretical concern; case reports in medical literature document this happening after people drank baking soda solutions.

Metabolic alkalosis is the other major concern. Symptoms include confusion, muscle twitching, hand tremors, nausea, and in severe cases, seizures or coma. The condition develops when your blood pH rises above the normal range of 7.35 to 7.45. Your body tightly regulates this range, and pushing it out of balance affects every organ system.

There is also the sodium load. A single teaspoon of baking soda contains roughly 1,200 milligrams of sodium. For someone with undiagnosed high blood pressure or kidney issues, that spike can cause fluid retention, swelling, and a dangerous rise in blood pressure. Some people have experienced heart rhythm disturbances after drinking baking soda, particularly if they were also dehydrated or taking medications that affect potassium levels.

Mixing baking soda with other substances is another risk. Some internet sources recommend combining it with apple cider vinegar or lemon juice. This creates a fizzy reaction that neutralizes both substances, but it does not create a “super drink.” It is essentially salt water with carbon dioxide. There is no clinical evidence that this combination provides any unique health benefit.

Who Should Never Drink Baking Soda?

Certain groups should avoid drinking baking soda entirely. People with high blood pressure, kidney disease, or heart failure should not consume it because of the sodium content. Pregnant women should avoid it because the safety data is insufficient and pregnancy already stresses the kidneys and cardiovascular system. Children should never be given baking soda to drink unless a doctor specifically instructs it.

People taking certain medications also need to be cautious. Diuretics, also called water pills, can interact with baking soda to cause dangerously low potassium levels. Lithium users face a specific risk because baking soda can affect how the body clears lithium, potentially leading to lithium toxicity. Anyone on prescription medications should ask a pharmacist or doctor before trying baking soda.

If you have ever had stomach ulcers, gastritis, or any condition that weakens the stomach lining, drinking baking soda is risky. The carbon dioxide gas can irritate an already inflamed stomach lining, and the rapid pH change can worsen ulcer pain. There is no evidence that baking soda helps heal any gastrointestinal condition.

What Happens If You Drink Too Much Baking Soda?

If you accidentally take too much, you need to recognize the warning signs. Nausea, vomiting, and severe abdominal pain are the first indicators. Rapid breathing, confusion, and swelling in the feet or ankles are more serious signs that your blood chemistry is shifting. If you experience any of these after drinking baking soda, seek medical attention immediately.

Medical treatment for baking soda overdose typically involves intravenous fluids and electrolyte replacement. In severe cases, doctors may need to correct the blood pH with medications. The outcome depends on how much was consumed and how quickly treatment begins. Most healthy adults who take a slightly larger than recommended dose recover without long-term effects, but the danger is real, especially for smaller individuals or those with underlying health conditions.

Do not induce vomiting after drinking too much baking soda. The combination of baking soda and stomach acid can produce enough gas to cause additional injury if vomited. Go to an emergency room or call poison control at 1-800-222-1222. Poison control specialists are available 24 hours a day and can give you specific instructions based on how much you consumed and your health history.

Are There Any Proven Health Benefits of Drinking Baking Soda?

Beyond occasional heartburn relief, clinical evidence for drinking baking soda is limited. Some small studies have explored whether sodium bicarbonate can slow kidney disease progression, and the results are promising enough that researchers are continuing to investigate. However, this is a medical treatment administered under physician supervision, not a home remedy. The doses used in those studies are carefully calculated and monitored with regular blood tests.

Claims that baking soda can cure cancer, detoxify your body, or cure autoimmune diseases have no scientific support. These claims circulate widely online, often tied to alternative medicine marketing. No clinical trial has confirmed any of these uses. The body has its own sophisticated systems for regulating pH and removing waste, and drinking baking soda does not “cleanse” anything.

Some people drink baking soda daily as a general health tonic. There is no evidence that this practice provides any benefit, and there is clear evidence that daily sodium bicarbonate consumption can raise blood pressure over time. The salt load alone makes daily use a poor choice for most people.

What Is the Safest Way to Use Baking Soda?

If you decide to try baking soda for occasional heartburn, the safest approach is to use a small dose, dissolve it fully in water, and drink it slowly. Half a teaspoon in a full glass of water is a reasonable starting point. Do not drink it on a full stomach, as the gas production can cause discomfort. Do not make it a daily habit.

Commercial antacid products that contain sodium bicarbonate are formulated with additional ingredients to reduce side effects. These products are generally safer than raw baking soda because the doses are standardized and the formulations are tested. If you need an antacid regularly, talk to a doctor about what is appropriate for you rather than self-treating with baking soda.

For any other use — athletic performance, general wellness, or disease prevention — there is no established safe dose because there is no established benefit. The evidence does not support drinking baking soda for anything other than short-term heartburn relief in healthy adults.