Bupropion and Buspirone Combination Therapy for Depression and Anxiety

Rationale and Efficacy

• Bupropion is FDA-approved as an antidepressant and demonstrates equivalent efficacy to SSRIs and SNRIs in treating major depressive disorder, with a recommended dose of 300 mg daily for long-term treatment of recurrent major depression 1, 2
• The American College of Gastroenterology recommends bupropion as a treatment option for major depressive disorder, with a response rate equivalent to other first-line antidepressants 1, 2

Weight Management and Safety

• Bupropion promotes weight loss through appetite suppression and reduced food cravings, with a mean weight loss of 2.77 kg at 6-12 months of treatment 3
• The combination of bupropion and buspirone does not worsen anxiety in most patients, with anxiety rates comparable to placebo 4, 5

Practical Implementation and Monitoring

• The recommended dosing strategy for bupropion is to start with 150 mg once daily and titrate to 300 mg daily, while buspirone should be started at 7.5 mg twice daily and titrated to 15-30 mg twice daily 1
• Patients should be monitored for neuropsychiatric adverse effects, including suicidal thoughts and behaviors, especially in those younger than 24 years 1, 6

Critical Safety Considerations

• Bupropion lowers seizure threshold and should be avoided in patients with epilepsy, with caution advised in those with seizure risk factors 1, 2
• Common discontinuation reasons include nausea, headache, and dizziness, with dose reduction required in moderate-to-severe renal or hepatic impairment 1, 4, 5