I dont know why but ive always had some sensitivity to meds and vits seem to be able to tolerate some B vits but I was reccommende C powder which has other vits in by the neurologist im going to see it made me quite ill i think its the c vit cos i came up as allergic to that on a vega test and ive never been able to eat oranges even when well without some sort of allergic reaction same with bananas. Im puzzled now or confused if Mercury dosent methylate in the body how does it enter the brain?