Noradrenaline Tartrate Kalceks (Norepinephrine)

Noradrenaline Tartrate Kalceks acts on the sympathetic nervous system to restore vascular tone in critical care settings.

• Hypotension: increases arterial pressure through alpha‑1 mediated vasoconstriction, improving organ perfusion.
• Septic shock: counteracts vasodilatory failure, supporting hemodynamic stability.
• Cardiac arrest: provides immediate pressor support to facilitate resuscitation efforts.

• Norepinephrine binds primarily to α1‑adrenergic receptors on vascular smooth muscle, causing vasoconstriction and raising systemic vascular resistance. It also stimulates β1‑adrenergic receptors in the heart, enhancing myocardial contractility and heart rate, thereby improving cardiac output in acute circulatory collapse.

Adverse reactions to norepinephrine infusion vary with dose and patient condition.

Common Side Effects

• Tachycardia: increased heart rate.
• Hypertension: excessive rise in blood pressure.
• Headache: vascular headache.
• Anxiety or restlessness: central nervous system stimulation.

Serious or Rare Side Effects

• Myocardial ischemia: reduced coronary blood flow leading to chest pain.
• Severe arrhythmias: potentially life‑threatening rhythm disturbances.
• Peripheral tissue necrosis: ischemia at infusion site if extravasation occurs.
• Pulmonary edema: fluid accumulation in lungs.

Use of norepinephrine requires careful monitoring and specific safety measures.

• Blood pressure monitoring: continuously assess arterial pressure to titrate dose.
• Cardiac monitoring: observe heart rhythm and rate for arrhythmias.
• Dose adjustment in coronary artery disease: reduce dose to avoid myocardial ischemia.
• Avoid rapid bolus administration: give as controlled infusion to prevent spikes.
• Caution in hyperthyroidism: increased sensitivity to catecholamines.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Norepinephrine may interact with several drug classes, altering its pressor effect or increasing risk of adverse events.

Major Interactions (Avoid)

• Monoamine oxidase inhibitors: can cause hypertensive crisis when combined with norepinephrine.
• Tricyclic antidepressants: potentiate catecholamine effects, raising blood pressure excessively.
• Beta‑adrenergic blockers: blunt the cardiac response to norepinephrine, reducing efficacy.

Moderate Interactions (Monitor Closely)

• ACE inhibitors: may enhance hypotensive episodes during dose adjustments.
• Diuretics: can affect intravascular volume, influencing pressor response.
• Other vasopressors: additive pressor effects may lead to extreme hypertension.