(MEMORY LOSS) I have been on Wellbutrin for close to a year start...

(MEMORY LOSS) I have been on Wellbutrin for close to a year starting with a low dosage-now at 450mg a day. I am not feeling the low dips of depression nor has it elevated me to a normal level of hapiness-minimally at best just functioning. I cannot remember certain things at work in which I should-short term and longer term. This is certainly a problem along with diminished concentration levels leading to mistakes in a job that is highly detailed. Does every body or some also believe that there are definate side effects of memory loss? ******