| to = escitalopram
| stop =
* '''Before day 1:''' gradually reduce dosage of doxepin to a maximum of 100 mg/day.* '''Day 1:''' reduce dosage of doxepin to 50 mg/day.* '''Day 3:''' reduce dosage of doxepin to 25 mg/day.* '''Day 8:''' stop administration of doxepin.{{downDoxepin}}
| start =
* '''Day 1:''' simultaneously start administration of escitalopram in a normal dosage of 10 mg/day.
| info =
* Occurrence of serotonin syndrome is theoretically possible, so caution is necessary.{{theorSS}}
* Escitalopram is a weak inhibitor of CYP2D6, which metabolizes doxepin.
}}