If you haven’t tried gabapentin, do strongly consider it.

It is effective on bipolar anxiety, and it is a live saver for me.

It’s not addictive, although one member here says he had a problem, but I think that is not typical. They do give me a little buzz and others report feeling it, and that is a big relief when you need it. I think they are more pleasant than pain pills. I only take them in the evening or bedtime, and I have low dose ones if I’m having an anxious day—I work so I try not to use them during working hours.

Good luck.