| to = venlafaxine
| stop =
{{stopFluoxetine1stopfluox}}
| start =
No wash-out period is needed. * '''Day 25:''' start administration of venlafaxine the next day in a low dosage of 37,5 mg/day.* '''Day 2215:''' increase dosage of venlafaxine to normal, 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.
{{longt1/2fluvox}}
* {{theorSS}}
* Fluoxetine and norfluoxetine inhibit the metabolism of venlafaxine via CYP2D6.
}}