Q. about Glucosamine Sulfate

I bought some glucosamine sulfate and recently started taking it for joints, because I read somewhere it was proven to help with that.

Tonight, I was looking at Buhner's Bartonella and Mycoplasma book and found something about it. In the extended protocol for mycoplasma under joint involvement/rheumatoid arthritis, he lists chondroitin/glucosamine sulfate BUT he makes a note not to use it with CNS complications.

Does anyone know why he said this?

I've been using it. I have both joint and CNS symptoms.