Pacerone

Pacerone (amiodarone) is a Class III antiarrhythmic medication used to correct and manage serious, life-threatening disturbances in heart rhythm. It affects the electrical activity of heart tissue to restore a regular, steady heartbeat. Due to its high risk of severe toxicities, including pulmonary toxicity, liver injury, and thyroid dysfunction, it is typically initiated in a hospital setting and reserved for patients with life-threatening arrhythmias who do not respond to other therapies.

Dosage by Body Weight

Adult loading doses typically range from 800 mg to 1600 mg daily in divided oral doses for 1 to 3 weeks, followed by a gradual reduction to 600 mg to 800 mg daily for 1 month, and then a maintenance dose of 200 mg to 400 mg daily. Pediatric use is highly specialized, off-label, and must be calculated and monitored exclusively by a pediatric cardiologist.

  1. Body Weight
    Below 5 kg
    Dose
    Not routinely recommended
    Frequency
    Use only under strict specialist supervision
    Tracking Notes
    Pediatric dosing of amiodarone is highly complex, typically calculated based on body surface area (BSA) or mg/kg under inpatient hospital monitoring. Do not administer without a specialist prescription.
  2. Body Weight
    5-7 kg
    Dose
    Not routinely recommended
    Frequency
    Use only under strict specialist supervision
    Tracking Notes
    Requires individual calculation by a pediatric cardiologist (typically 10 to 20 mg/kg/day loading dose, tapered to 5 to 10 mg/kg/day maintenance dose if indicated).
  3. Body Weight
    8-10 kg
    Dose
    Not routinely recommended
    Frequency
    Use only under strict specialist supervision
    Tracking Notes
    Requires individual calculation by a pediatric cardiologist. High risk of severe adverse effects in infants and young children.
  4. Body Weight
    11-15 kg
    Dose
    Not routinely recommended
    Frequency
    Use only under strict specialist supervision
    Tracking Notes
    Requires individual calculation by a pediatric cardiologist. Safety and efficacy in pediatric populations have not been systematically established.
  5. Body Weight
    16-20 kg
    Dose
    Not routinely recommended
    Frequency
    Use only under strict specialist supervision
    Tracking Notes
    Requires individual calculation by a pediatric cardiologist. Requires regular monitoring of thyroid, liver, and pulmonary functions.

Formulation

Tablet

Purpose

Treatment of life-threatening ventricular arrhythmias, such as recurrent ventricular fibrillation and recurrent hemodynamically unstable ventricular tachycardia, when other treatments have failed or are not tolerated.

Generic Name

Amiodarone

Scheduled Drug

No. This medicine is generally not treated as a scheduled/prescription-only drug in common consumer references, but local rules may vary.

Alternatives

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.