| start =
Caution is necessary for at least four weeks.
* '''Day 12:''' start administration of nortriptyline in a low dosage of 25 mg/day.* '''Day 1415:''' increase dosage of nortriptyline to 50 mg/day.* '''Day 2829:''' gradually increase dosage of nortriptyline to 75 mg/day and more.
| info =
* Fluoxetine and norfluoxetine slow the metabolism of nortriptyline via CYP2D6.