* '''Day 1:''' gradually reduce dosage of citalopram/escitalopram to a maximum of 20 mg/ day resp. 10 mg/day, when this dosage is respectively > 20 mg/day and > 10 mg/day. * '''Day 8:''' stop administration of citalopram/escitalopram .
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* '''Day 8:''' start bupropion in a normal dosage of 150 mg/day.