I finally got authorization for O2. I was sleeping today and missed call from O2 Co. Already started D3 regimen 10,000 IU a day; should I take more? Tomorrow going shopping for fish oil. I tried amitriptyline as preventive a long time ago and I couldn't do it, the higher that milligrams the worse the adverse side effects, I stopped at 30 milligrams. No, have never tried Trex. I am chronic and the only prescription drug that works for me to stop the pain is Relpax/Eletriptan, very expensive even with insurance ( $12.88 per one pill) never tried injections nor have I been offered them by any neuro.