Noradrenalin Laboratoire Aguettant (Noradrenaline Tartrate)

Noradrenalin acts as a potent vasopressor targeting the sympathetic pathway to restore blood pressure in critical care.

• Hypotension: raises arterial pressure by increasing systemic vascular resistance.
• Septic shock: supports hemodynamics when vasodilatory failure leads to profound hypotension.
• Cardiogenic shock: improves perfusion by augmenting afterload and maintaining coronary flow.

• Noradrenaline tartrate is a direct agonist of α1‑adrenergic receptors on vascular smooth muscle, causing vasoconstriction and an increase in systemic vascular resistance. It also stimulates β1‑adrenergic receptors in the heart, providing modest inotropic support. The combined α‑ and β‑effects raise mean arterial pressure and improve organ perfusion during states of distributive or cardiogenic shock. These actions are rapid and dose‑dependent, allowing clinicians to titrate the infusion to achieve target hemodynamic goals.

Noradrenalin may produce a range of adverse reactions, varying from frequent to rare but serious.

Common Side Effects

• Tachycardia: increased heart rate due to β1 stimulation.
• Headache: result of rapid blood pressure changes.
• Anxiety or restlessness: central nervous system stimulation.
• Peripheral ischemia: reduced blood flow to extremities.
• Arrhythmias: ectopic beats or mild rhythm disturbances.

Serious or Rare Side Effects

• Severe hypertension: excessive rise in blood pressure risking vascular injury.
• Myocardial ischemia: reduced coronary perfusion from increased afterload.
• Tissue necrosis at injection site: due to extravasation.
• Cardiac arrest: rare but life‑threatening event.

When using Noradrenalin, clinicians should observe specific safety measures to minimize risks.

• Monitor blood pressure: adjust infusion to maintain target MAP.
• Assess cardiac function: avoid in uncontrolled tachyarrhythmias.
• Use caution in peripheral vascular disease: risk of ischemia.
• Prevent extravasation: ensure secure intravenous access.
• Pregnancy and lactation: safety unknown; use only if benefits outweigh risks.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Noradrenalin can interact with several drug classes, requiring attention to avoid harmful effects.

Major Interactions (Avoid)

• MAO inhibitors: risk of hypertensive crisis due to synergistic catecholamine effects.
• Tricyclic antidepressants: additive pressor response may cause severe hypertension.
• β‑blockers: may blunt compensatory tachycardia and alter hemodynamic response.

Moderate Interactions (Monitor Closely)

• Vasodilators (e.g., nitroglycerin): may necessitate higher Noradrenalin doses.
• Calcium channel blockers: can enhance hypotensive episodes if dose reduced.
• General anesthetics: may affect vascular tone and require careful titration.