My T says traumatzed people can have sensitive and adverse reactions to drugs. I agree with others here to try really low doses and titrate up. That is something a doc can accommodate easily.
There are also a lot of non drug options that do help just as well. Especially when it comes to sleep sometimes non drug options can really work well or even in a combo with presribed drugs and therapy.
I love acupunture when I can afford it.
Yes, I agree about BPD, look at those symptoms outside of drug reactions.
Sometimes though PTSD can mimic other things, but not sure about BPD.
It is all tricky.