My 20 year old recovering daughter had a diagnostic test called rEEG because of anxiety and panic attacks. She was lucky to find the one psychiatrist in our area that utilizes it. I lucked out on the cost because she agreed to become part of a study at Boston College so it was free.
Over a period of 6 months... she had tried several anti-depressants prescribed by former pdocs but none worked and actually made the problem worse and created new ones. She was on Neurontin for a while too but it stopped working for her.
So her current pdoc does this test and it comes back saying she's resistant to anti-depressants (she's never been diagnosed depressed anyway), now resistant to Neurontin, a match for benzo's but since she's an addict that wasn't happening, and then a surprise perfect match -- beta blockers. It blocks excess adrenaline from attaching to the beta receptors in the brain.
She doesn't take them every day, just occasionally when the physical symptoms go out of control.
You might want to ask your doc about them, but you have to be in fairly good health and using alcohol or any drug that lowers your blood pressure/respiratory rate while on them is a very BAD idea.