Dawn, berberine is the active ingredient in goldenseal. It has oxidizing affect and because of this I stopped. I was having so many stomach problems. I tried it for a couple of days. Unfortunately the local labs that most docs use do not do them.
Labs exist to make money.
Setting up tests costs money. Until enough docs know enough to order the tests, the labs do not set them up. Let us know what you learn. If you wait for the conventional medical monopoly to recognize the truth that is LGS, you will probably not live long enough to benefit from it.