In the beginning it’s all guesswork (so is TCM) but as you have the material available you can dig down deeper each time.
Benfotiamine is one of those, what if you have all those symptoms and take two Benfotiamine caps only to feel better 10m later...
There is one more thiamine product that can bypass the gut but you need a quack to inject it and apparently Benfotiamine is both better and cheaper.
I also bought some Myelin MS and took it for a test run, huge change when you can replenish the myelin. But taking that also proves there is more to MS than just Mercury because the extra Myelin fed some critters that made me feel worse. No idea what but the author of “Lyme the great imposter” points to one of the flavors of lyme actually directing the Mercury to be able to get at our nerves for lunch...
Not finished hunting and my guns are getting bigger :)