Multibic (Sodium Hydrogen Carbonate, Magnesium Chloride Hexahydrate, Sodium Chloride, Calcium Chloride Dihydra)

Multibic is used as an electrolyte solution in renal replacement therapy and haemodialysis settings.

• Haemodialysis fluid: provides electrolyte and bicarbonate balance during dialysis sessions.
• Renal replacement therapy adjunct: supports acid‑base homeostasis in patients undergoing dialysis.
• Acute kidney injury management: helps maintain stable electrolyte levels during intermittent haemodialysis.

• Multibic delivers sodium, chloride, calcium, magnesium and bicarbonate ions directly into the bloodstream or dialysis circuit. The bicarbonate component buffers excess hydrogen ions, correcting metabolic acidosis, while the electrolytes restore plasma osmolarity and maintain cardiac and neuromuscular function. This combined action helps preserve acid‑base equilibrium and electrolyte homeostasis during haemodialysis and other renal replacement procedures.

Multibic may cause a range of reactions, most of which are mild and transient.

Common Side Effects

• Hypotension: transient drop in blood pressure during infusion.
• Nausea: mild stomach discomfort.
• Vomiting: occasional emesis.
• Metallic taste: transient alteration in taste perception.
• Mild headache: brief headache episodes.
• Local irritation: redness or discomfort at injection site.

Serious or Rare Side Effects

• Electrolyte imbalance (hypernatremia, hyperkalemia): significant shifts in serum electrolytes.
• Metabolic alkalosis: excessive bicarbonate leading to elevated blood pH.
• Anaphylactic reaction: severe allergic response requiring immediate medical attention.
• Cardiac arrhythmia: abnormal heart rhythm due to electrolyte disturbances.
• Pulmonary edema: fluid overload in the lungs.
• Severe hypotension: marked drop in blood pressure causing dizziness or fainting.

When using Multibic, clinicians should observe several safety measures.

• Assess baseline electrolyte levels: obtain serum sodium, potassium, calcium, magnesium, and bicarbonate before administration.
• Monitor acid‑base status: check arterial blood gases during treatment.
• Use cautiously in heart failure: avoid rapid infusion that may worsen fluid overload.
• Avoid rapid bolus: infuse at recommended rate to prevent sudden electrolyte shifts.
• Verify compatibility: ensure solution is compatible with dialysis equipment and other IV fluids.
• Store at ambient temperature: keep in original container, protect from moisture and direct sunlight.

Multibic can interact with other medications and solutions used during renal therapy.

Major Interactions (Avoid)

• Calcium‑containing solutions: risk of calcium overload and precipitation.
• High‑dose bicarbonate agents: may cause severe metabolic alkalosis.

Moderate Interactions (Monitor Closely)

• Loop diuretics: additive electrolyte shifts, especially potassium.
• ACE inhibitors or ARBs: potential for altered potassium balance.
• Anticoagulants used in dialysis (e.g., heparin): monitor clotting parameters.
• Other intravenous electrolytes: adjust dosing to avoid cumulative excess.