---
title: "What does a high Vitamin B6 mean?"
type: biomarker-interpretation
url: "https://www.test-well.com/biomarkers/vitamin-b6/high"
biomarker: Vitamin B6
direction: high
reference_range:
  - "age 18+: 20.0 – 125 nmol/L"
reviewed_at: 2026-09-06
review_status: reviewed
date_published: 2026-09-05
---

# What does a high Vitamin B6 mean?

> High vitamin B6 almost always comes from supplements — B-complex, energy drinks, 'nerve support' formulas and some multivitamins deliver many times the daily requirement — and matters because excess B6 can itself cause the nerve damage people take it to prevent: numbness and tingling in the feet and hands. Stopping the supplement is the treatment; levels fall within weeks.


## What is the normal range for Vitamin B6?

- age 18+: 20.0 – 125 nmol/L

Usually reflects supplement use. Excess can cause nerve damage at high doses.

## What are the common causes of high Vitamin B6?

1. B6 or B-complex supplements, energy drinks, fortified products
2. Some 'hair, skin and nail' and 'nerve' formulations
3. Rarely, blood disorders that raise circulating B6

## What symptoms go with high Vitamin B6?

- Often none
- Tingling, numbness or burning in the feet and hands, unsteadiness when toxic

## What do clinicians usually check next?

- Inventory every supplement and drink for pyridoxine content
- Stop the sources and retest in 6–8 weeks
- Neurological review if symptoms are present

## How do you recheck Vitamin B6?

| Test or panel | Type | Price | Fasting | Results |
| --- | --- | --- | --- | --- |
| [Vitamin B6 (Pyridoxine)](https://www.test-well.com/tests/vitamin-b6-pyridoxine) | Test | $51.99 | No | 3–5 business days |

Plus one $6 lab processing fee per order; physician authorization included.

## Common questions

### How much B6 is too much?

The tolerable upper intake for adults is 100 mg/day; neuropathy has been reported with long-term intake above that and occasionally below it. Most people who test high are getting 50–200 mg a day from supplements or energy drinks without realizing it.

## Related

- [What does a low Vitamin B6 mean?](https://www.test-well.com/biomarkers/vitamin-b6/low)
- [Vitamin B6 reference ranges](https://www.test-well.com/biomarkers/vitamin-b6)
- [Vitamin D, 25-Hydroxy reference range](https://www.test-well.com/biomarkers/vitamin-d-25-hydroxy)
- [Vitamin B12 reference range](https://www.test-well.com/biomarkers/vitamin-b12)
- [Folate reference range](https://www.test-well.com/biomarkers/folate)

## Sources

- [Mayo Clinic Labs](https://www.mayocliniclabs.com/test-catalog/overview/42360)

---

Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-06. Review policy: https://www.test-well.com/editorial-policy

Canonical page: https://www.test-well.com/biomarkers/vitamin-b6/high
Machine-readable catalog: https://www.test-well.com/api/catalog.json · MCP server: https://www.test-well.com/mcp · Overview for agents: https://www.test-well.com/llms.txt

Prices are cash-pay, in USD, and include physician authorization; every order adds one flat $6 lab processing fee. Educational content is not a diagnosis — discuss results with a clinician.