Neither is the aroma of Siberian daffodils or capsules of New Zealand GreenLipped mussel powder. Sorry to cast a discordant note but those of us who experience high anxiety are very suggestable and eager for a quick fix that will get us back to normality. But magnesium pills, listening to recordings of waves breaking on the shore and taking vitamins D and K won't make an iota of difference to your anxiety levels and certainly won't effect your recovery.
This is because none if these weird and wonderful remedies have any effect whatsoever on the thing that's causing anxiety. And that's the fact that your nervous system has become over sensitised and that sensitivity is being maintained by the fear you flood your nerves with every time you feel panic or have a bad feeling or worrying thought.
There is only one thing that cures over sensitised nerves and it certainly isn't an instant fix. And that's something that stops you producing the hormone of fear - learning to accept for the time being the irritating symptoms of anxiety instead of constantly fighting them.
There are many modern self-help books written by contemporary writers that base their therapy on Acceptance in some form. They all take their lead from a woman who first developed the Acceptance method and first published a book on the subject 55 years ago. Since that first book it has been estimated by Wikipedia that hundreds of thousands of people have recovered from anxiety disorder - yet her name is almost entirely unknown among modern day psychiatrists who have in my opinion a lamentable record of success in curing anxiety neurosis.