Not sure if you're aware of some things that might help. They aren't guaranteed of course, because we all react to things differently. Anxiety can be very crippling, but I don't need to tell you that.
There are some things that I've either tried or others I've known have. Like Lemon Balm, extract of Passionflower or Valerian Root. Easy enough to find places that carry these and/or deliver. Some foods said to help are things like Turkey, Chamomile Tea, Mixed Nuts Sweet Potatoes and even Avocados. Don't really know how effective those are.
If you can find a little time to do things you enjoy, even small things around the home can also be helpful. Whether it be writing, sketching, any hobbies you've picked up or might want to start that are inexpensive (you don't need cost to add to your anxiety) or even just finding things that peak your sense of humor on YouTube or pics that you enjoy. Being able to focus on things you like or make you happy, even for a few moments can help relieve some of the tensions and negatives that hit. You need to make time for your self and your well-being. It's never a 100% cure, but anything steps that you can find to fight it will help.
I hope something I've said here can help and that you can find a way to battle through this. As I've said to others dealing with anxiety and depression, you're not alone and there are plenty of people willing to share, listen or talk if you need. Wishing you the best. Oh and remember to breathe, slow and deep. :)