Hi Paula. A patient of mine had an antidote from chiropractics. She had made good progress with migraine remedies. An old shoulder problem returned during treatment and she went for chiropractic treatment and the migraine restarted right after. We repeated sanguinaria which dealt with that level of migraine and the shoulder problem.
It suggests to me that the chiro has a suppressive effect potentially in this case. But could be merely antidotal.