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Strong human evidenceVitamin / amino-acid metabolism cofactor

Vitamin B6

Vitamin B6 supports amino-acid metabolism and nervous-system processes. More is not automatically better: prolonged excess can damage sensory nerves.

Also indexed as: Pyridoxine · Pyridoxal phosphate · P5P · PLP

A clear starting point

Vitamin B6 supports amino-acid metabolism and nervous-system processes. More is not automatically better: prolonged excess can damage sensory nerves.

Systems mapping shows biological relevance, not a treatment recommendation or a patient CPI score.

No validated chemical structure is displayed in this edition.

How it works

Amino-acid metabolism / neurotransmitter biosynthesis

Vitamin B6 supports amino-acid metabolism and nervous-system processes. More is not automatically better: prolonged excess can damage sensory nerves.

Targets & processes
Pyridoxal-phosphate-dependent enzyme reactions.
Systems & tissues
Amino-acid metabolism, nervous system and blood-cell biology.

What does the evidence show?

Established essential-nutrient role and deficiency correction. Broad cognition or cardiovascular-prevention benefits from extra B6 are not established here.

What this does not establish

Do not infer safety from water solubility or combine multiple B6-containing products without considering total exposure.

NIH ODS: Vitamin B6 — Health Professional Fact Sheet

Official educational / regulatory source · Official educational source

Established essential-nutrient role and deficiency correction. Broad cognition or cardiovascular-prevention benefits from extra B6 are not established here.

Limitations: Do not infer safety from water solubility or combine multiple B6-containing products without considering total exposure.

Citation metadata from PubMed, a service of the U.S. National Library of Medicine, NIH. A citation match is not a guarantee of study quality. Abstracts are not full-text reviews.

Safety is a separate question

Chronic excess can cause sensory neuropathy, altered sensation and difficulty with coordination. Multiple supplements can contribute to cumulative exposure.

Contraindications & cautions

New numbness, tingling or balance problems require medical review rather than adding more B6.

Medication & supplement interactions

Cycloserine, some antiepileptic medicines and theophylline can interact with B6 metabolism or therapy.

Regulatory status · United States

United States: dietary-supplement status is product-specific, not FDA approval of disease treatment. Food, supplement and drug formulations must not be assumed interchangeable.

Read the official source

This is not an exhaustive safety list. Regulatory status varies by jurisdiction and product; investigational use is not approval.

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Education, not a prescription. Research summaries are not medical advice, dosing instructions, or an offer to sell. Mechanistic findings do not establish clinical effectiveness. US regulatory status is product- and indication-specific and may change. Discuss health decisions with a licensed clinician.