| start =
* '''Day 1:''' simultaneously start citalopram in a normal dosage of 20 mg/day.
* If necessary, increase the dosage of citalopram/escitalopram.
| info =
* Caution with this switch Citalopram is necessarya very weak inhibitor of CYP2D6, because citalopram slows the metabolism of which metabolizes mianserine via CYP2D6.
}}