Sodium carbonate cannot be used to treat excessive stomach acid, primarily due to: damage from its strong alkaline reaction, complications arising from a too-rapid neutralization reaction, the risk of excessive sodium ion intake, lack of clinical validation, and individual variability. The following is a detailed analysis:
Damage from Strong Alkaline Reaction: Sodium carbonate (Na₂CO₃) aqueous solution has a pH of 11-12, far exceeding the pH of stomach acid (1.5-3.5). Direct contact with the gastric mucosa may cause chemical burns, leading to mucosal edema, erosion, or even ulcers, worsening existing symptoms.
Complications from a Too-Rapid Neutralization Reaction: Sodium carbonate reacts with stomach acid (HCl) to produce carbon dioxide gas (Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂↑). A large amount of gas produced in a short period may cause bloating, belching, and even induce gastroesophageal reflux or perforation.
Risks of excessive sodium intake: Each gram of sodium carbonate contains approximately 468 mg of sodium ions. Excessive intake may lead to water and sodium retention, worsening the condition of patients with hypertension and heart failure, especially those with renal insufficiency.
Lack of clinical validation: Currently, no authoritative medical guidelines recommend sodium carbonate as an antacid. Its efficacy, safety, and dosage standards have not been validated through large-scale clinical trials, and there is uncertainty.
Individual differences: Different patients have different levels of gastric acid secretion, gastric mucosal condition, and comorbidities. The strong alkalinity of sodium carbonate may cause irreversible damage to some people, such as the elderly or those with thin gastric mucosa.
Clinical treatment of excessive stomach acid requires strict adherence to medical advice. Commonly used medications such as aluminum magnesium carbonate and ranitidine are formulated with scientific ratios to balance efficacy and safety. Patients should not self-medicate. If symptoms such as acid reflux and heartburn occur, patients should seek medical attention promptly for gastroscopy, Helicobacter pylori testing, etc., to determine the cause and develop an individualized treatment plan to avoid delaying treatment.
