| to = escitalopram
| stop =
* '''Before day 1:''' gradually reduce dosage of nortriptyline to a maximum of 100 mg/day.* '''Day 1:''' reduce dosage of nortriptyline to 50 mg/day.* '''Day 3:''' reduce dosage of nortriptyline to 25 mg/day.* '''Day 8:''' stop administration of nortriptyline.{{downNortriptyline}}
| start =
* '''Day 1:''' simultaneously start administration of escitalopram in a normal dosage of 10 mg/day.