I am experiencing memory loss due to the medications that I am on. I am on lithium plus other meds and feel that I can't remember anything anymore. I have reached a point where I feel that the memory loss is effecting my job. But then again I may be paranoid . (Which is another problem)

Does long-term use result in permant damage? Will my memory improve by going of one or more of my meds?

Medications:
Lithium
Lamactical
Welbutrin
Saphris