Both, however, are known to cause restlessness, nervousness, agitation, insomnia, and weight loss
. I can not easily attribute you fogetfulness to bupropion. Both bupropion and fluoxetine are safe and effective antidepressants. Bupropion causes less impotence than fluoxetine does.
Lack of concentration, disorganized and unfocussed thinking, amnesia, and numerous other cognitive difficulties can be experienced by depressed individuals due to the depression itself.