as is an overage of B6:

http://www.neuro.wustl.edu/neuromusc...#pyridoxinedef

Come on over to the peripheral neuropthy forum:

http://neurotalk.psychcentral.com/forumdisplay.php?f=20

and talk to us; B6 deficiency, unfortunately, is not something that happens in isolation very often--there may be genetic or metabolic disorders you should be investigating.