> The syndrome is notable not only for its impact on peripheral nerve function but also because of its generally, but not always, reversible nature upon cessati

> The syndrome is notable not only for its impact on peripheral nerve function but also because of its generally, but not always, reversible nature upon cessation of vitamin B6 intake.. [US] set a safe adult upper limit at 100 mg/day in 1998 and has not revised that downward despite several other national agency setting lower ULs, the most recent being the European Food Safety Authority revising its adult UL to 12 mg/day in 2023.