Vitamins & minerals
Vitamin B6
Names you may see: pyridoxine pyridoxal phosphate P5P pyridoxal-5-phosphate B6
The quick take
Vitamin B6 participates in amino-acid metabolism, immune function and the production of neurotransmitters and haemoglobin.
A closer look
What forms will I see on a label?
Pyridoxine hydrochloride and pyridoxal-5-phosphate (P5P) are common label forms. Add up B6 from all supplements.
Why people use it
People choose B6 for normal protein metabolism and immune and nervous-system function. It is often part of a broader B-complex or multivitamin formula.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Adequate B6 supports normal function. The presence of an active-form ingredient does not justify unlimited intake.
What should I know before using it?
Long-term excessive supplemental B6 can damage nerves. Pay particular attention when combining B-complex, multivitamin and magnesium formulas.
Sources & further reading
NIH Office of Dietary Supplements ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.