My p-doc told me that I had a borderline personality and she gave me 50mg Celexa (a highish dose of an SSRI).

Then she went on maternity leave and this other p-doc gave me 0.75mg Risperdal (a low dose atypical antipsychotic)

I think that pretty much everything is used to treat borderline personality disorder. I think it is about treating the symptoms. Different people with a borderline personality have different symptoms.