I have been on 2 mg and it makes me tired as well. I was taking it in the am. I say was, because not sure I'll continue on it. I woke this am feeling like the devil himself. very very angry, anxious, tearful, and agitated. my doc took me off for 2 days, and then back on, then call fri am to report. if anger is still a side effect, then i am sure he will change. Good luck. Hope it works. It didnt I don't think for me.