I am pleased you have less pain, thats a big help & youre right that some are more sensitive than others. Personally, synthetics and chemicals make me really sick so I avoid them. I have had a lot of pain the last 12 years but now with a baclofen pump I actually have no pain which miraculous but I do still have all my other symptoms which are nothing like yours. Maybe its not MS, did you have a MRI? That seems to usually be apretty good indicator & is not painful or too invasive
Good luck.