My own experience is that taking Tegretol does not, in any way, change my personality.

Thanks to both of you who posted differing opinions on this issue. I understand the theory that drugs may reduce intensity. Maybe for some they do. I'm skeptical. I think a lot of what drives borderline personality disorder is extreme insecurity. Maybe something calming helps. I don't believe that I am have true full-blown borderline per. d/o. I think I do have PD Mixed, of PD NOS. Under stress, I can be less than poised in my responses to people. I don't think that will be changed by meds.