Mannitol Burg Pharma (Mannitol)

Mannitol is used in clinical settings to manage conditions where osmotic fluid shifts are therapeutic.

• Intracranial hypertension: lowers intracranial pressure by drawing water from brain tissue into the vascular compartment.
• Intraocular hypertension: reduces intraocular pressure by osmotic dehydration of the vitreous humor.
• Acute kidney injury: provides renal protection by increasing urine output and flushing tubular debris.
• Oliguric renal failure: induces diuresis to improve fluid balance in patients with low urine output.

• Mannitol acts as an osmotically active agent that is freely filtered by the glomerulus but not reabsorbed in the renal tubules. Its high osmolarity creates an extracellular gradient that pulls water from intracellular and interstitial spaces into the vasculature, increasing urine volume. The resulting reduction in fluid volume within the brain and eye lowers intracranial and intraocular pressure, while enhanced renal perfusion supports kidney protection.

Mannitol may be associated with a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Headache: mild to moderate pain often occurring shortly after infusion.
• Nausea: sensation of unease that may lead to vomiting.
• Vomiting: expulsion of stomach contents, usually transient.
• Electrolyte imbalance (hypernatremia): elevated serum sodium levels.
• Hypotension: drop in blood pressure, especially with rapid infusion.
• Flushing: warmth and reddening of the skin.

Serious or Rare Side Effects

• Pulmonary edema: accumulation of fluid in the lungs, potentially compromising breathing.
• Severe hypernatremia or hyponatremia: extreme shifts in sodium concentration that can affect neurological function.
• Acute renal failure: sudden loss of kidney function.
• Anaphylactic reaction: severe allergic response requiring immediate medical attention.
• Seizures: uncontrolled electrical activity in the brain.

When using Mannitol, several precautions should be observed to ensure patient safety.

• Renal function: monitor serum electrolytes and urine output regularly.
• Cardiovascular status: avoid rapid infusion in patients with heart failure or compromised circulation.
• Pregnancy: use only if potential benefits justify potential risks to the fetus.
• Concomitant diuretics: adjust fluid management to prevent excessive volume loss.
• Hypersensitivity: discontinue immediately if signs of allergic reaction appear.
• Store at 2-8 °C: keep refrigerated, protect from light, do not freeze or shake.

Mannitol can interact with other medicines, affecting its efficacy or safety.

Major Interactions (Avoid)

• Loop diuretics: additive diuretic effect may cause severe electrolyte depletion.
• Insulin: hyperosmolar state can impair glucose control, risking hyperglycemia.
• Nephrotoxic agents (e.g., aminoglycosides, contrast media): increased risk of renal injury.

Moderate Interactions (Monitor Closely)

• ACE inhibitors or ARBs: may enhance hypotensive response.
• Antihypertensive agents: additive blood pressure lowering.
• Lithium: altered renal clearance may increase lithium levels.