I think it's very interesting docs prescribe various drug classes for the treatment of PTSD. It very important to understand which symptoms docs are treating when prescribing a particular drug.

I'm assumming your doc is prescribing Lamictal for your "depression" symptoms of PTSD.

I doubt any medication will treat your intrusive "dissociative" symptoms of PTSD, including depersonalization. Dissociative symptoms usually diminish over time, through therapy and support, and non-avoidance of past reminders.

My point is . . . try to understand exactly what/which symptom(s) your doc is prescribing the meds for. No drug will cure PTSD.