At what dosage is vitamin B-6 toxic?

Updated: Jun 01, 2020
  • Author: Mark Rosenbloom, MD, MBA; Chief Editor: Michael A Miller, MD  more...
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Over time, 300-500 mg/day of vitamin B-6 may be neurotoxic (patients with impaired renal function may be more susceptible). The acute toxic dose has generally not been established.

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