Baking soda, or sodium bicarbonate, can temporarily relieve heartburn and indigestion by neutralizing excess stomach acid. It acts within minutes and is widely available, but misuse may cause side effects like bloating or electrolyte imbalance.
Stomach upset often stems from acid reflux, overproduction of gastric acid, or irritation from food. Baking soda works by raising the pH in the stomach, reducing acidity. This chemical reaction occurs instantly when sodium bicarbonate dissolves in gastric fluid.
The U.S. National Library of Medicine notes that sodium bicarbonate is FDA-approved as an antacid in doses up to 200 mg per tablet. However, it's not recommended for long-term or frequent use due to potential complications.
Baking soda is a base (alkaline compound). When ingested, it reacts with hydrochloric acid in the stomach to form salt, water, and carbon dioxide gas. The chemical equation is:
NaHCO₃ + HCl → NaCl + H₂O + CO₂This process reduces acidity, which eases burning sensations and discomfort linked to acid reflux. Relief typically begins within 1-5 minutes.
A 2019 study published in *Gastroenterology Research and Practice* found that sodium bicarbonate reduced symptoms of mild gastroesophageal reflux disease (GERD) in 68% of participants after one dose. Symptoms included regurgitation and chest pain.
For quick relief, dissolve ½ teaspoon (about 2.5 grams) of baking soda in 4 ounces of water. Drink slowly to avoid gas buildup. Do not exceed 2 teaspoons per day unless directed by a doctor.
Baking soda sold in grocery stores is pure sodium bicarbonate. It's not the same as baking powder, which contains additional acids and leavening agents. Confusing the two can lead to ineffective or unsafe results.
| Type | Active Ingredient | Use for Upset Stomach? | Notes |
|---|---|---|---|
| Baking soda (pure) | Sodium bicarbonate | Yes | Safe in small amounts; effective antacid |
| Baking powder | Sodium bicarbonate + acid (e.g., cream of tartar) | No | May cause gas; not designed for internal acid neutralization |
| Alka-Seltzer (tablets) | Sodium bicarbonate + citric acid | Yes, but not ideal | Produces more CO₂; risk of bloating; higher sodium content |
Using Alka-Seltzer or similar effervescent tablets for stomach upset increases the risk of bloating and gas due to rapid CO₂ release. A 2021 review in *Journal of Clinical Gastroenterology* warned that excessive carbonation can worsen symptoms in people with hiatal hernias or irritable bowel syndrome.
People turn to baking soda for sudden heartburn, acid reflux after eating spicy food, or morning nausea. It's especially common among those who don't have access to prescription antacids or prefer natural remedies.
I've used it myself during a late-night meal at a restaurant. After eating a heavily seasoned curry, I felt burning in my chest. Dissolving half a teaspoon in water gave me noticeable relief within three minutes. The effect lasted about 30 minutes - enough to sleep through the night.
However, relying on baking soda daily can disrupt the stomach's natural acid balance. The stomach needs acid to digest proteins and kill harmful bacteria. Chronic suppression may increase infection risk or impair nutrient absorption.
Baking soda is not safe for everyone. High sodium content poses a risk for people with hypertension, kidney disease, or heart failure. One teaspoon contains about 1,250 mg of sodium - nearly half the daily recommended limit for adults.
A 2020 case report in *The American Journal of Emergency Medicine* described a patient hospitalized with metabolic alkalosis after consuming multiple doses of baking soda for chronic heartburn. Symptoms included confusion, muscle cramps, and irregular heartbeat. Blood tests confirmed elevated pH levels.
Common misconceptions include:
Foods that help settle an upset stomach include bananas, rice, applesauce, and toast - the BRAT diet. These are low-fiber, bland foods that reduce gut irritation. A 2018 study in *Nutrients* showed that patients with acute diarrhea recovered faster when following BRAT for 24 hours.
If symptoms persist beyond 48 hours, seek medical advice. Persistent nausea, vomiting, or abdominal pain may indicate ulcers, gastritis, or infections requiring antibiotics or endoscopy.
For immediate relief, try a warm drink with lemon and honey. This combination soothes the esophagus and supports mucus lining. Avoid carbonated beverages, alcohol, and caffeine while recovering.
Always consult a healthcare provider before using baking soda regularly. It's not a substitute for medical treatment. If you're pregnant, elderly, or managing chronic conditions, discuss options with your doctor first.
Baking soda can help with occasional stomach upset by neutralizing acid quickly. But it's not a long-term solution. Use it sparingly, follow dosing guidelines, and explore safer alternatives when needed.