Hi diamondcut, I must say that I have yet to hear of someone who did NOT do well with Diamox (assuming there are not contraindications) if they feel better with the soft cervical collar and raising the head of their bed… Let us know? As far as the vagus nerve compression, just raising the head of your bed will help. The blood drains through the IJV only when we are supine (laying down). When we are vertical, the pressure should basically be off of the vagus nerve (we drain through the vertebral veins in that position). My research is currently involving systemic treatment for our venous issues. I think we require systemic treatment, not localized — and as I mentioned in my book, damaging the delicate endothelium of our vessels is SCARY, long term. I think our vessels need tender, loving care! This is based on one of my clinical trials (not just personal experience). I look forward to publishing it soon. Let us know how you are doing? Gentle hugs, Diana