Just like any antidepressant, fluoxetine works for some people and not for others, and there's 'controversy' surrounding almost every antidepressant under the sun so I wouldn't consider that on its own to be something to get worked up about! I was put on it briefly but had to come off it almost immediately because it made my insomnia completely unmanageable. The best thing is that if you do need to come off it because it's not working, it's incredibly rare to get any nasty discontinuation symptoms (it's often used in low dosage to manage discontinuation syndrome with SNRIs and other SSRIs), so you should be able to switch to a different medication without much trouble.