* '''Before day Day 1-8:''' Gradually reduce dosage of citalopram to a maximum of 20 mg/day, when this dosage is > 20 mg/day. * '''Day 18:''' When a dosage of 20 mg/day is reached, stop administration.

* A wash{{washout8-out period is not necessary, but care is needed.14}}* '''Day 115:''' Start administration of vortioxetine in a dosage of 10 mg/day.