The Source Naturals 10mg looks like the best contender for dibencozide right now until more testing tells us one way or another. Any of the listed b-complexes people are talkingng about should be adequate for now. Right now however, you don't even know if you have a problem with folic acid so you can certainly make a start with what you have and then you have a basis of comparison and will know if you have a folic acid problem at all. We don't know the percentage but my best guess it is between 20% and 50% based on known genetic issues. Good luck.