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| to = venlafaxine
| stop =
{{stopFluoxetine1stopfluox}}
| start =
Caution is necessary for at least four weeks.* '''Day 25:''' start administration of venlafaxine in a low dosage of 37.,5 mg/day.* '''Day 915:''' increase dosage of venlafaxine to 75 mg/day.* '''Day 2920 and after:''' gradually increase dosage of venlafaxine if necessary.
| info =
* Fluoxetine and norfluoxetine slow the metabolism of venlafaxine via CYP2D6.
* Tapering fluoxetine to 20mg before stopping is not necessary, because of strong serotonergic activity of target drug.
{{longt1/2fluvox}}
}}