| to = nortriptyline
| stop =
{{stopDuloxetineTCAdecrease25p3d}}
| start =
* '''Day 8:''' start administration of nortriptyline in a low dosage of 25 mg/day.* '''Day 15:''' increase the dosage of nortriptyline.{{TCAincrease25p3d}}| info = * Duloxetine slows the metabolism of nortriptyline by CYP2D6.{{TCAplasmalevelmonitoring}}
}}