I'm basically on freddd's protocol for methylation. I take Thorne B-12 complex+dibencozide+methylcobalamin+methylfolate. I am heterozygous for both MTHFR polymorphisms (C677T and A1298C), so I may have additional need for BH4 as well. Has anyone here tried BH4 at all ? Did it help at all ? What symptoms did it help with ? Thanks!