D3 is the natural form. I haven't heard anything about mercury being in it. Could you have been reading about a specific brand?

My insomnia has improved greatly since the last 2 chelation rounds. Unfortunately I don't feel any better for it. The panic and anxiety are gone now that I am over the stomach flu, at least. But I'm pretty sure now that SAD is sinking in. I'm going to keep chelating, stick to my diet and supplement regime, and hope that I can just weather this. I'm working on getting a job set up for after Christmas and maybe that will help combat the SAD.

BTW how do you put a picture into a post here? I can't seem to find any instructions.