A mega dose of Vitamin B6 has a moderate to significant risk for CMTers.
http://www.cmtausa.org/index.php?opt...d=68&Itemid=42
And also there is more information for everyone. It's under the fact sheet by Vitamin B6.
http://ods.od.nih.gov/factsheets/Vit...ofessional/#h7
I had read this before but not thoroughly. I find it interesting.