* '''Before day 1:''' gradually reduce dosage of amitriptyline to a maximum of 50 mg/day.* '''Day 1:''' reduce dosage of amitriptyline to 25 mg/day.* '''Day 8:''' stop dosage of amitriptyline.{{stopAmitriptyline}}
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* '''Day 8:''' start administration of sertraline in a normal dosage of 50 mg/day.