I was diagnosed with severe depression many, many years ago. They tried all different kinds of medications. None of which helped and some (including the Wellbutrin) had scary side effects.
Today, I am depression free. It isn't because of any form of chemicals- pharmaceutical or naturopathic. I now understand from many years of studying and my own experience that our belief systems determine our biology. I was even taught this in my masters level psychology program. There is tons of new information available.
Don't get me wrong, I know meds and especially naturopathic/homeopathic approaches can support change. But they are only a short-term band-aid. Therapy, self-care, examining unconscious fear-based beliefs, releasing self-judgement, group work, etc. are all ways to approach a permanent cure. Anxiety, depression, addiction, etc. are symptoms not the problem. Yes, they are biological symptoms and the biology is a by-product of belief; change belief you change chemistry.
Just think about what triggered your anxiety attack. What were the fearful thoughts that were running rampant through your mind just before and during the attack?
Just some information about a different approach. I hope it at least helps support you in exploring all the different things that may be available to support you. Anxiety attacks can be terrifying and I support you in resourcing them in every way that you can. T.