Bupropion-Induced Neuropsychiatric Toxicity

Introduction to Bupropion Toxicity

• The American Academy of Neurology and other medical societies acknowledge that bupropion carries a dose-dependent seizure risk, with a risk of 1/1000 at therapeutic doses, and seizures can be fatal or lead to status epilepticus, as reported by the Mayo Clinic Proceedings 1, 2

Diagnostic Evaluation

• A comprehensive metabolic panel, complete blood count, urine drug screen, serum bupropion level, blood glucose, and thyroid function tests are essential for assessing patients with suspected bupropion-induced neuropsychiatric toxicity, according to Gastroenterology 3

Management and Treatment

• The FDA recommends immediate discontinuation of bupropion in patients who develop delusions, hallucinations, psychosis, concentration disturbance, paranoia, and confusion, and alternative treatments for depression/ADHD symptoms should be considered, such as SSRIs, as suggested by medical guidelines 3
• For patients with ADHD symptoms, stimulants should be used with extreme caution given the seizure history and only after complete resolution of acute symptoms, as noted by the medical community, although the specific guideline society was not mentioned 4

Management of Bupropion-Induced Neuropsychiatric Adverse Events

Immediate Actions and Critical Differential Diagnosis

• The American College of Physicians and other guideline societies recommend that bupropion carries a black box warning for development or worsening of serious neuropsychiatric issues, including depression, suicidal ideation/behavior, and mania, even in patients without previous psychiatric history 5
• The National Comprehensive Cancer Network recommends avoiding treatment with SSRIs in patients with bipolar depression due to risk of mania 6

Post-Discontinuation Management and Ongoing Monitoring

• The American College of Physicians recommends initiating mood stabilizer, such as lithium, valproate, or carbamazepine, as first-line treatment for bipolar disorder, and considering antipsychotic if psychotic features or severe agitation are present 5
• The American College of Internal Medicine suggests switching to alternative antidepressant, such as SSRI (sertraline, escitalopram) or SNRI, if thorough evaluation rules out bipolar disorder and symptoms resolve after bupropion discontinuation 7