| to = venlafaxine
| stop =
* '''Before day 0:''' gradually reduce dosage of nortriptyline to a maximum of 100 mg/day.{{TCAdecrease25p3d}}* '''Day 1:''' reduce dosage of nortriptyline to 50 mg/day.* '''Day 3:''' reduce dosage of nortriptyline to 25 mg/day.| start = {{StartAntidepressant}}| start info = * '''Day 1:''' simultaneously start administration of Safe target dose venlafaxine in a normal dosage of = 75 mg/day.* '''Day 8:''' stop administration of nortriptyline and continue administration of venlafaxine.| info = * Occurrence of serotonin syndrome is theoretically possible, so caution is necessary.}}