In this patient who works as a taxi driver and knows that fluoxetine is sedating, it is important for this patient to take this medication in the evening before bed to avoid drowsiness at work. Fluoxetine is a SSRI, not an SNRI. Fluoxetine should be taken at the same time each day to ensure even plasma drug concentration. Fluoxetine typically needs to be taken for weeks before it reaches its full effect. It is not appropriate to judge its effectiveness after only a few days.