All the known herbal remedies have good results, but some work well for some and not others. The one thing that is important isn't just the hope of the natural remedies working, but the fact you are doing something positive to control the anxiety attacks. Deep breathing is something I find helps reduce the anxiety.
One thing you must do is to try understand why you are having panic attacks, and what fear sets it off. I suffered panic attacks during a time of depression after loosing a job. After getting a new job I still would get panic attacks. After some thought, I realized I was having panic attacks because I had a fear of having panic attacks.. A vicious cycle...
I soon learned not to be stressed about having a anxiety attack and soon because I was in control and not my emotions, the panic attacks stopped.
So yes try herbal remedies my friend but make sure you take the time to find out the cause of your anxiety, try and face up to it, dont let it control you.
I get strength from reminding myself Isaiah 41;10
Fear not for I am with you,
Do not be dismayed, For I am your God.
I will strengthen you, I will help you.
Remember you are never alone my friend.