What I have settled on (after trying 18 different meds in 18 months at one point!) is Mirtazapine 30mg. I used to be on 60mg but we managed to cut it down. If i try to cut it down further then it's not enough to keep me stable. Mirtazapine is not an SSRI so that's maybe why it's helped where some of the SSRIs did nothing. I also tried 3 different MAOIs to no real effect (and it was more of a problem if anything because you have to strictly control your diet with some of them). I also take the contraceptive pill in 3 monthly cycles to control my horrible PMT. And I also take a thyroid supplement because my levels are sometimes low (high? it's underactive anyway - but I think it's an inverse reaction.....it's late, my brain isnae working tonight!) and it helps keep my energy steady so I am able to get about and do things. Unfortunately all 3 meds mean I've put on over a stone in the past year

All drugs have side-effects. It's a case of weighing up the costs and benefits of whatever you try. And don't expect a magic pill that makes you feel 100% because that's never going to happen. The way medication works best with BPD is to control some of the symptoms to allow you to use skills learnt in therapy to get through your day-to-day life....and maybe even enjoy some/most of it.