* '''Day 3:''' reduce dosage of doxepin to 25 mg/day.
| start =
* '''Day 1:''' simultaneously start administration of venlafaxine in a normal dosage of 75 mg/day.{{startVenla}}
* '''Day 8:''' stop administration of doxepin and continue administration of venlafaxine.
| info =
* Occurrence of serotonin syndrome is theoretically possible, so caution is necessary.}}