Tapering Bupropion

Recommended Tapering Protocol

Reduce from 450mg XL directly to 300mg XL and maintain this dose for 1-2 weeks, which is consistent with general antidepressant tapering principles, as recommended by the National Comprehensive Cancer Network 1
After tolerating 300mg XL for 1-2 weeks, reduce to 150mg XL, and this extended period at 150mg allows assessment of withdrawal symptoms and stabilization, according to the National Comprehensive Cancer Network 1
The standard NCCN dosing for smoking cessation demonstrates that bupropion can be initiated at 150mg daily and increased to 300mg daily after just 3 days, suggesting the medication has relatively forgiving dose transitions, as noted by the National Comprehensive Cancer Network 1

The maximum therapeutic dose of 300mg daily for depression means that 150mg represents a sub-therapeutic maintenance dose, making it an appropriate stopping point if continuing treatment, as recommended by the National Comprehensive Cancer Network 1
For patients using bupropion for smoking cessation, the standard treatment duration is 7-12 weeks, suggesting that extended use at lower doses is well-tolerated, according to the National Comprehensive Cancer Network 1
Monitor for neuropsychiatric symptoms (depression, suicidal ideation) during tapering, though these are uncommon, as noted by the National Comprehensive Cancer Network 1

Week 1-2: 300mg XL daily, as recommended by the National Comprehensive Cancer Network 1
Week 11+: Complete discontinuation if appropriate, according to the National Comprehensive Cancer Network 1

For patients experiencing withdrawal symptoms, consider extending the 150 mg phase to 4-6 weeks before discontinuation or alternating 150 mg daily with 150 mg every other day for 1-2 weeks before stopping, as suggested by Praxis Medical Insights 2

Bupropion requires less aggressive tapering than SSRIs because its mechanism of dopamine/norepinephrine reuptake inhibition produces less severe withdrawal than serotonergic agents, according to Clinical Gastroenterology and Hepatology 3

General antidepressant discontinuation guidelines recommend 10-14 days for tapering to limit withdrawal symptoms, but bupropion's unique mechanism makes it less prone to withdrawal syndromes 4