Have you considered a magnesium chloride bath? In many cases, it will induce calmness in cases where the nervous system is in a state of hypersensitivity.
Best method would be to use 4L Epson salts to mix up a brine bath. You can pour the salt in a pitcher and place it under the running water when filling the bath to help dissolve the crystals.
Beyond this, there are several mineral deficiencies that can cause the nervous system to enter a state of hypersensitivity. Such as; potassium, magnesium(as mentioned above), iron, sodium and several vitamins. Some of which could be thrown off by the admission of Sodium Chlorite in certain people. ie, when I took Miracle-Mineral-Supplement on a daily basis, I noticed that I had to supplement my magnesium to keep things in check.