I'm so sorry for your hellish nights.
I notice my NACpills have a lot of Molybdenum in it, so this is probably a co-factor. I already supplement Molybdenum separately and feel better because of it. Could this be something for you? I'm not a naturapath by any stretch!
dr.Wiki says: "In humans, four enzymes depend on molybdenum:
sulfite oxidase, xanthine oxidoreductase, aldehyde oxidase, and mitochondrial amidoxime reductase.
[75] People severely deficient in molybdenum have poorly functioning sulfite oxidase and are prone to toxic reactions to sulfites in foods.
[76][77]"
It also sheds Copper from the body. You can get too much so be careful.