| to = fluoxetine
| stop =
* '''Before day 01:''' gradually reduce dosage of amitriptyline to a maximum of 50 mg/day.
* '''Day 1:''' reduce dosage of amitriptyline to 25 mg/day.
* '''Day 8:''' stop dosage of amitriptyline.
| info =
* Occurrence of serotonin syndrome is theoretically possible, so caution is necessary.
* Fluoxetine is a strong inhibitor and norfluoxetine are inhibitors of CYP2D6(strong) and CYP3A4 (moderate), which metabolizes metabolize amitriptyline.}}