Vitamin B6 (pyridoxal 5 phosphate) — answers to active vitamin B6 (PLP)
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Pyridoxal 5'-phosphate is the metabolically active coenzyme form of vitamin B6, the form the body ultimately converts other B6 forms into for use in enzyme reactions.
Why it’s used
Taken as a source of vitamin B6, which the body needs for amino acid metabolism, red blood cell formation, and nervous system function.
What the evidence is for
preventing vitamin B6 deficiency and supporting normal amino acid and red blood cell metabolism.
What the evidence says
NIH ODS confirms vitamin B6's established role in these processes and documents deficiency effects such as anemia and dermatitis. Evidence for benefits from supplementation above the RDA in people who are not deficient, such as for mood or cognitive claims, is limited and inconsistent. PLP is not shown to outperform other B6 forms once absorbed.
Dose studied
1.3–100 mg — adult RDA up to the tolerable upper intake level, per NIH ODS.
Context
NIH ODS lists an adult RDA of about 1.3-2.0 mg/day depending on age and sex, and a tolerable upper intake level of 100 mg/day; high-dose studies exploring neuropathy risk have used intakes well above typical dietary levels.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.