Thank you so much for your quick response. I look forward to reading the information on the above links. My B levels have been high for about a year. First the B12 was very low, so they put me on 1000 MCG of B12 - which I took for about 6 months. When I had blood tested it was 2800 , so doctor told me to cut back to every other day, but also suggested that we take blood test again after flushing system of B12. So I went without for four weeks, tested and this time both levels of B12 (1200) and B6 (38.8). This was the first time testing for B6... I don't know the right questions to ask the neurologist as she was not concerned with B6. All reports that I have read is that B12 is good for neuropathy - but since I am still at 1200, I should stay off the supplement for now.