* '''Before day 1:''' gradually reduce dosage of mianserine to a maximum of 60 mg/ day.
* '''Day 1:''' reduce a dosage of 60 mg/day to 30 mg/day.
* '''Day 8:''' stop administration of mianserine.
| start =
* '''Day 1:''' simultaneously start citalopram/escitalopram in a normal dosage of 20 mg/day, respectively 10 mg/day.* '''Day 8:''' stop administration of mianserine and only continue administration of citalopram/escitalopram.
* If necessary, increase the dosage of citalopram/escitalopram.
| info =
* Caution with this switch is necessary, because citalopram/escitalopram slows the metabolism of mianserine via CYP2D6.}}