I have been on a very low dose (100mg) of Bupropion for about 10 years, and I take it along with stimulant medication for my ADD. If I take more than that I am angry over every little thing and lots of anxiety. My daughter also takes a low dose with stimulant medication and that works very well for her. I am still tired a lot, but that could be from my thyroid medication being lowered a few of months ago. My doctor is raising it again to see if that is what’s causing the tiredness.
If you’re having trouble with weight gain and being tired, it might be a good idea to have your thyroid levels checked too. It made a world of difference for me in how I feel. But the Bubropion also helps even at a low dose.