| to = citalopram
| stop =
* '''Before day 0:''' 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 administration of amitriptyline.{{stopAmitriptyline1}}| start = * '''Day 8:''' start administration of citalopram/escitalopram in a normal dosage of 20 mg/day, resp. 10 mg/day.| info = * {{theorSSStartCitalopram}}* Citalopram/escitalopram is a weak inhibitor of CYP2D6, which metabolizes amitriptyline.
}}
