Thanks for this article. I read and followed up some the references last night. I also came across a PDF, but I can't post the link here, since I only have 5 posts on the forum. I'll post it eventually.

I still can't decide what to do, but am leaning to first upping my dosage from 600 to 900 mg and then, based on how that goes, moving down to 300 - I have 300 mg ones from Doctor's Best. I may even go off it entirely, or perhaps not. It all depends on how my body reacts.

At this point I'm trying to figure out what supplements to take for my SF PN. I will likely introduce 1mg of M. B12 too.