Sorry I hit enter too quickly, Invega is a med used for schzophrenia, it the person suggesting wellbutrin a therapist or a psychiatrist. You med choices may be different because of your diagnosis, as well, I know for myself, I have to do some hard work as well to keep from getting into a depression by doing self care and I go to a support group.
It's important that you are really active in your wellness, my depression has gone down dramatically but it's still there sometimes, I'm Bipolar2.
Are you bipolar? Lamactil is generally given for that, and at what dose are you at? Those are really important questions to ask before I could answer you :)
Cheers
LeftCoastChick
Depression Community Leader