* '''Day 1:''' simultaneously start administration of mirtazapine in a dosage of 15 mg/day.
* '''Day 8:''' stop administration of venlafaxine and continue administration of mirtazapine only in a dosage of 30 mg/day.
| info = * Venlafaxine is a weak inhibitor of CYP2D6, which metabolizes mirtazapine. }}