#redirect [[{{Drugswitch | from = fluoxetine | to = escitalopram| stop = * Gradually reduce dosage of fluoxetine to a maximum of 20 mg/ day, when this dosage is > 20 mg/day. * When a dosage of 20 mg/day is reached, stop administration.| start = * No wash-out period is needed. * '''Day 1:''' start escitalopram the next day in low dosage of 5 mg/day.* '''Day 14:''' increase dosage of escitalopram to normal, i.e. 10 mg/day.| info = * Fluoxetine-citalopram]]has a very long elimination time; phasing out fluoxetine is therefore not necessary. * {{theorSS}}* Fluoxetine inhibits CYP2C19, CYP2D6 and CYP3A4, which metabolize escitalopram.}}