I'm currently just taking Clonazapan (0.25mg) as needed(I try to leave it was long as possible before I do because of the addiction potential), but the last refill's nearly out, so may not be continuing with that one. I haven't noticed any real side effects, but then, I don't take it often, and I take a really low dose.
I take 300mg of Wellbutrin daily. It was prescribed when I went in for panic attacks, and it seems to have stopped those for the most part. I'm just more generally anxious, which is an improvement of sorts. I have energy. I can get through an entire day without needing to nap. I can't even describe how life-changing that is for me. I can focus on things a bit better.
I've taken Ativan in the past. It curbed acute panic juuuust fine.
I'm not sure any of that will help you, but there ya go.