Vitamin B6 Vitamin B6 (Pyridoxine)
A B vitamin your body uses to build proteins and brain chemicals.
Also printed asVitamin B6 (Pyridoxine / Pyridoxal-5-Phosphate) · B6 · Pyridoxine · Pyridoxal 5-Phosphate · PLP · P5P
What it measures
A B-vitamin used to build neurotransmitters and to clear homocysteine.
Affects mood and nerve function; unusually, too much from supplements causes nerve damage of its own.
Why it matters for how long you stay well
It helps clear homocysteine alongside B12 and folate, and it is one of the few vitamins where taking too much for too long causes nerve trouble of its own.
How it shows up in daily life
Running low can show as cracked lips, a sore tongue, low mood and pins and needles.
High and low readings
When it reads high
From supplements; sustained very high intake can affect nerves.
When it reads low
Low intake.
What moves it
Daily life
- fish, chicken, chana, bananas and potatoes
- alcohol
- pregnancy
Common questions
What does Vitamin B6 (Pyridoxine) measure?
A B-vitamin used to build neurotransmitters and to clear homocysteine. Affects mood and nerve function; unusually, too much from supplements causes nerve damage of its own.
What does a high Vitamin B6 result usually mean?
From supplements; sustained very high intake can affect nerves.
What does a low Vitamin B6 result usually mean?
Low intake.
What is the usual reference range for Vitamin B6?
A broad adult reference band is 5–50 ng/mL. Labs differ, so read your result against the band printed on your own report.
Educational only, not a diagnosis. A single number means little without your history and the rest of your panel, so discuss your own results with your physician.
Typical adult reference band
- Adults
- 5–50 ng/mL
Labs differ. The band printed on your own report is the one that applies to your result.
Reported in ng/mL
Ageing relevance
3/5
A moderate ageing association; used in clinical longevity panels.
Worth knowing
It is one of the very few vitamins where too much, taken for long enough, causes nerve damage.
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