| to = citalopram
| stop =
* '''Before day 1:''' gradually reduce dosage of trazodone to a maximum of 150 mg/day, when this dosage is > 150 mg/day. * '''Day 1:''' reduce dosage of trazodone to 75-100 mg/day.* '''Day 8:''' stop administration of trazodone.{{stopTrazodone}}
| start =
* A wash-out period is not necessary, but care is needed.
* '''Day 89:''' start administration of citalopram in a normal dosage of 20 mg/day.
| info =
* Occurrence of serotonin syndrome is theoretically possible, so caution is necessary.{{theorSS}}
* Citalopram is a weak inhibitor of CYP2D6, which metabolizes trazodone.
* The content of trazodone in the tablet, for example 100 mg or 150 mg, determines which exact doses are given. {{reviewtrazoTablet}}
}}