I spent 1 month on 150mg Wellbutrin XR, then switched over to 150...

I spent 1 month on 150mg Wellbutrin XR, then switched over to 150mg of the SR because my copay was much much cheaper. (Most likely because it's actually Bupropion SR, the generic) I've only been on the SR for 2 weeks now. So a total of 6 weeks all together. I am totally losing hair, and have been for about 4 weeks. The other side effect that really bothers me is my memory loss and confusion. I am having trouble remembering the simplest words when I'm in a conversation with someone. I feel dull and stupid, just not sharp. This is very concerning to me, as I've always been an intelligent, quick witted person. The only other small side effect is I am sometimes just itchy all over. No rash or anything, but just itchy. I am worried about withdrawal symptoms if I stop cold turkey. (Had a bad bout with coming off Zoloft.) Does anyone know if the SR pills can be cut into 1/2's or 1/4's? My pharmacist told me no - but I'm thinking of just doing it anyways. Any suggestions??