Violeta
Senior Member
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Oops, I think the study I linked refers the tryptophan that was contaminated.These two most recent posts made me wonder if tryptophan is involved in the neuropathy that people attribute to B6 toxicity.
The B6 toxicity actually being that it's not being used correctly by the body due to error caused by some other deficiency, or I suppose oversupplementing.
I found this study that could indicate it is actually the tryptophan causing the neuropathy. But maybe others already know this.
https://www.ncbi.nlm.nih.gov/pubmed/2162498