What is the management of Bupropion (Wellbutrin) overdose?

From the Guidelines

Management of Wellbutrin (bupropion) overdose requires immediate medical attention in an emergency department setting, with treatment focusing on stabilization of vital signs, securing the airway if necessary, and cardiac monitoring due to the risk of seizures and arrhythmias. The provided evidence 1 does not directly address the management of bupropion overdose, but general principles of overdose management can be applied. Treatment begins with stabilization of vital signs and securing the airway if necessary. Activated charcoal should be administered within 1-2 hours of ingestion to reduce drug absorption. There is no specific antidote for bupropion overdose, so treatment is primarily supportive.

Key Considerations

• Benzodiazepines such as lorazepam (1-2 mg IV) or diazepam (5-10 mg IV) are first-line agents for seizure management and should be readily available 1.
• Sodium bicarbonate (1-2 mEq/kg IV) may be used to treat QRS prolongation or ventricular arrhythmias.
• Continuous cardiac monitoring is essential for at least 24 hours, as delayed cardiotoxicity can occur, particularly with extended-release formulations.
• Patients with significant overdoses (typically >450 mg) should be admitted to an intensive care unit for close observation.
• Hemodialysis is generally not effective due to bupropion's high protein binding and large volume of distribution.
• The severity of overdose correlates with the dose ingested, with seizures being more common at doses exceeding 600 mg.
• Wellbutrin overdose is particularly dangerous because seizures can occur suddenly, even in patients who initially appear stable.

Overdose Management

The management of bupropion overdose is primarily focused on supportive care, as there is no specific antidote available. The use of benzodiazepines for seizure management and sodium bicarbonate for QRS prolongation or ventricular arrhythmias is supported by general principles of overdose management 1. However, the specific management of bupropion overdose should be guided by the most recent and highest-quality evidence available. In the absence of direct evidence, the provided guidelines 1 emphasize the importance of immediate medical attention, stabilization of vital signs, and cardiac monitoring in the management of overdose patients.

From the FDA Drug Label

10.2 Overdosage Management Consult a Certified Poison Control Center for up-to-date guidance and advice. Call 1-800-222-1222 or refer to www.poison. org. There are no known antidotes for bupropion. In case of an overdose, provide supportive care, including close medical supervision and monitoring. Consider the possibility of multiple drug overdose. The management of Bupropion (Wellbutrin) overdose involves:

• Consulting a Certified Poison Control Center for guidance and advice 2
• Providing supportive care, including close medical supervision and monitoring
• Considering the possibility of multiple drug overdose There are no known antidotes for bupropion. Key points to consider in management:
• Call 1-800-222-1222 or refer to www.poison.org for guidance
• Monitor the patient closely for potential complications 2

From the Research

Management of Bupropion Overdose

The management of bupropion overdose involves various treatment approaches, including:

• Supportive care for the majority of cases, which can resolve on their own 3
• Intravenous lipid emulsion (ILE) therapy, which has been utilized in cases of bupropion overdose with varying levels of success 3, 4
• Vasopressor support for patients who develop cardiogenic shock 3
• Haemoperfusion, which may be useful in life-threatening cases of bupropion toxicity 5
• Aggressive cardiac monitoring and antidysrhythmic therapy for patients who develop cardiotoxicities, such as widened QRS and prolonged QTc interval 6

Treatment Considerations

When managing bupropion overdose, the following considerations should be taken into account:

• The potential for serious adverse effects, including seizures, cardiogenic shock, and death 3
• The importance of early initiation of ILE therapy in cases of severe bupropion poisoning 3
• The need for careful monitoring of patients who receive ILE therapy, as complications such as continued hypotension, recurrent seizures, and renal failure can occur 4
• The potential benefits and risks of haemoperfusion in severe cases of bupropion toxicity 5

Simulation-Based Training

Simulation-based training can be an effective way to educate healthcare professionals on the management of bupropion overdose, as it allows for:

• Practice in performing primary and secondary surveys, managing airway and breathing, and initiating treatment for seizure 7
• Development of skills in responding to pulseless ventricular tachycardia, including high-quality CPR, defibrillation, and advanced airway management 7
• Interprofessional collaboration and teamwork in the pediatric emergency department 7