Natriumbikarbonat Viatris (Sodium Hydrogen Carbonate)

Sodium Hydrogen Carbonate acts as an alkalinizing agent to reduce acidity in the gastrointestinal tract and systemic compartments.

• Heartburn and acid indigestion: provides rapid relief by neutralizing gastric hydrochloric acid.
• Metabolic acidosis: supplies bicarbonate ions to raise blood pH in conditions such as renal failure or diabetic ketoacidosis.
• Urinary alkalinization: increases urine pH to aid the excretion of certain drugs or to manage specific renal tubular disorders.

• After oral administration, sodium hydrogen carbonate dissociates to release bicarbonate ions. In the stomach, bicarbonate chemically reacts with hydrochloric acid, forming carbon dioxide and water, thereby raising gastric pH. Systemically, absorbed bicarbonate enters the plasma, buffering excess hydrogen ions and increasing blood pH. The excess bicarbonate is excreted in urine, elevating urinary pH and facilitating the renal elimination of acidic substances.

Sodium Hydrogen Carbonate may cause a range of adverse reactions, most of which are related to its alkalinizing and sodium load.

Common Side Effects

• Mild gastrointestinal discomfort: nausea, stomach fullness, or belching.
• Flatulence: excess gas production from carbon dioxide release.
• Increased thirst or mild dry mouth.
• Transient headache.

Serious or Rare Side Effects

• Metabolic alkalosis: excessive rise in blood pH leading to confusion or muscle twitching.
• Hypernatremia: elevated serum sodium causing edema or hypertension.
• Severe electrolyte disturbances: hypokalemia or low calcium levels.
• Acute renal impairment: worsening kidney function in susceptible individuals.

When using sodium hydrogen carbonate, several precautions should be observed to ensure safe and effective therapy.

• Assess acid‑base status: confirm indication and baseline pH before initiating therapy.
• Monitor electrolytes: check serum sodium and potassium regularly during prolonged use.
• Use caution in renal impairment: reduced excretion may increase systemic bicarbonate and sodium load.
• Avoid in uncontrolled hypertension or heart failure: excess sodium can exacerbate fluid retention.
• Limit duration in patients with edema: prolonged use may worsen swelling.
• Store at ambient temperature: keep in the original container, protect from moisture and heat.

Sodium hydrogen carbonate can alter the absorption or activity of several medications; interactions should be reviewed before co‑administration.

Major Interactions (Avoid)

• Lithium: concurrent use may increase lithium toxicity due to reduced renal clearance.
• Warfarin: bicarbonate can affect INR stability, requiring close monitoring or dose adjustment.
• Tetracycline antibiotics: reduced absorption leading to therapeutic failure.
• Fluoroquinolone antibiotics: decreased bioavailability when taken together.

Moderate Interactions (Monitor Closely)

• Digoxin: altered serum potassium may increase risk of toxicity.
• ACE inhibitors or ARBs: combined sodium load may raise blood pressure.
• Diuretics (especially thiazides): potential for electrolyte imbalances.
• NSAIDs: additive risk of fluid retention and hypertension.