The available evidence indicates some beneficial effects with second-generation antipsychotics, mood stabilisers, and dietary supplementation by omega-3 fatty acids. However, these are mostly based on single study effect estimates. Antidepressants are not widely supported for BPD treatment, but may be helpful in the presence of comorbid conditions. Total BPD severity was not significantly influenced by any drug. No promising results are available for the core BPD symptoms of chronic feelings of emptiness, identity disturbance and abandonment. Conclusions have to be drawn carefully in the light of several limitations of the RCT evidence that constrain applicability to everyday clinical settings (among others, patients' characteristics and duration of interventions and observation periods).
Olanzapine treatment of female borderline personality disorder patients: a double-blind, placebo-controlled pilot study.
The intent of this study was to compare the efficacy and safety of olanzapine versus placebo in the treatment of women meeting criteria for borderline personality disorder (BPD).
                We conducted a double-blind, placebo-controlled study of olanzapine in 28 female subjects meeting Revised Diagnostic Interview for Borderlines and DSM-IV criteria for BPD. The subjects were randomly assigned to olanzapine or placebo in a 2:1 manner. Treatment duration was 6 months. Primary outcome measures were self-reported changes on anxiety, depression, paranoia, anger/hostility, and interpersonal sensitivity scales of the Symptom Checklist-90.
                Nineteen subjects were randomly assigned to olanzapine; 9. to placebo. When random effects regression modeling of panel data was used, controlling for baseline level of severity, olanzapine was associated with a significantly (p < .05) greater rate of improvement over time than placebo in all of the symptom areas studied except depression. Weight gain was modest in the olanzapine-treated group but was significantly higher than in those treated with placebo (p < .02). In addition, no serious movement disorders were noted.
                Olanzapine appears to be a safe and effective agent in the treatment of women with criteria-defined BPD, significantly affecting all 4 core areas of borderline psychopathology (i.e., affect, cognition, impulsivity, and interpersonal relationships).