Hi I have been taking wellbutrin for over a year and I have had lack of concentration and memory loss so i went to my psycologist and he is upping my dosage of wellbutrin he said it will help with my lack of concentration and memory loss now I am reading this forumn and everybody is saying it is the wellbutrin that is causing these sideeffects. I have beent aking 100mg 1 a day now he wants me to take 150 mg 2 aday does anyone have the experience of going to a higher dose and it helping with their memory loss and concentration problems please email me at ****** with wellbutrin in the subject column thanks for your help.