What's common is to prescribe SSRIs and similar medication for all kinds of psychiatric illnesses, including BPD. The evidence that this would help in the long-term is vague to non-existant, and I'd avoid trusting it (as with almost all research on anti depressants).
The best-researched facts about SSRI antidepressants are the increase in suicide rates and the "side effects", which are still often underreported, and include problems with basically all bodily systems, because serotonine is an importat t neurotransmitter. Not to forget about
https://en.wikipedia.org/wiki/Post-SSRI_sexual_dysfunction
SSRIs can also reduce life expectancy.
Personally, after being on an antidepressant (Effexor) for 6 years, I can also say that they massively reduced mental stability and self-awareness for me.
There are many meta-studies about this by now, somehow ADs are still seen aa evidende-based medicine comparable to insuline for diabetes. This is far from the truth, the mechanisms of action are poorly understood and effectiveness has been painted in an unrealistic way by pharma companies who make these pills.