I've found medication has helped with my aggression/rage as well as my depression, but therapy is the only thing that will help with the emotional turmoil and developing the skills to be effective in the many areas in your life affected by BPD.

I'm on Lamotrigine for depression and impulsivity and Risperidone for racing thoughts, aggression and depression. They're doing their job. There are side-effects, but they're tolerable in light of what they do for me.

The consensus when it comes to BPD is to that it's a combination of meds and therapy that help alleviate the pain.