Natrijev Hidrogenkarbonat Medice (Sodium Hydrogen Carbonate)

• Natrijev Hidrogenkarbonat Medice is an antacid that acts on excess gastric acid and systemic acid‑base balance.
• Acid indigestion: provides rapid relief of discomfort caused by excess stomach acidity.
• Heartburn: neutralizes gastric acid to reduce the burning sensation behind the breastbone.
• Metabolic acidosis: supplies bicarbonate ions to help correct systemic acidemia in selected clinical situations.

• Sodium hydrogen carbonate dissociates in the stomach to release bicarbonate ions, which react with hydrochloric acid to form carbon dioxide, water and sodium chloride. This chemical neutralization raises the gastric pH, decreasing acidity and providing symptomatic relief. In systemic use, the absorbed bicarbonate contributes to the extracellular buffer system, helping to correct metabolic acidosis. The reaction is rapid and occurs locally, limiting systemic absorption when administered orally in typical doses.

Sodium hydrogen carbonate may cause adverse reactions, most of which are mild and related to its alkalinizing properties.

Common Side Effects

• Belching: release of carbon dioxide causing burping.
• Abdominal discomfort: mild cramping or bloating.
• Nausea: transient feeling of queasiness.
• Taste alteration: slight salty or metallic taste.

Serious or Rare Side Effects

• Metabolic alkalosis: excessive rise in blood pH leading to confusion or muscle twitching.
• Severe hypernatremia: high sodium levels causing hypertension or edema.
• Allergic reaction: rash, itching or swelling of the face.
• Pulmonary edema: rare fluid accumulation in the lungs.

• When using Natrijev Hidrogenkarbonat Medice, certain precautions should be observed to ensure safe and effective therapy.
• Dosage adjustment: tailor the amount based on severity of symptoms and patient response.
• Renal impairment: use with caution as reduced excretion may increase sodium load.
• Cardiovascular disease: monitor fluid and electrolyte balance in patients with hypertension or heart failure.
• Concurrent antacids: avoid simultaneous use with other alkalinizing agents to prevent excess alkalinity.
• Pregnancy and lactation: safety not established; consult a healthcare professional before use.
• Store at ambient temperature: keep in original container, protect from moisture and direct sunlight.

Sodium hydrogen carbonate can affect the absorption or activity of several medications; interactions are classified by clinical significance.

Major Interactions (Avoid)

• Aspirin and other NSAIDs: reduced gastric irritation may alter absorption, potentially decreasing efficacy.
• Lithium: increased renal reabsorption may raise lithium levels, risking toxicity.
• Digoxin: altered electrolyte balance can affect drug activity.

Moderate Interactions (Monitor Closely)

• Antibiotics such as tetracyclines and fluoroquinolones: alkalinization may impair absorption, requiring timing separation.
• Iron supplements: decreased absorption when taken together; separate dosing by at least 2 hours.
• Warfarin: potential alteration of INR due to changes in plasma protein binding; monitor coagulation parameters.