I take 300 mg of Wellbutrin XL. I have only been taking it a couple months but so far it is working well. I took 150 for a week then my pdoc upped it to 300 mg. 150 didn't seem to be doing anything but then maybe it was because i hadn't taken it that long.

I have not had tremors from it at all. It has really been an unproblematic med for me and it seems to work well.

I wouldn't stop taking any med without the knowledge of your doc. There can be some strange side effects if you stop any med cold turkey.

Good luck with the Wellbutrin. I hope it works well for you.