July 31, 2025

Vitamin B6: Benefits, Food Sources, and Safe Supplement Use

Vitamin B6 (pyridoxine) is an essential nutrient, but taking more is not necessarily better. It helps the body use protein and supports normal nervous-system function. Most people can obtain adequate vitamin B6 from food. In Australia, the Therapeutic Goods Administration (TGA) warns that vitamin B6 from supplements can cause peripheral neuropathy, sometimes with serious or lasting effects.

What does vitamin B6 do?

Vitamin B6 participates in many enzyme reactions, including amino-acid metabolism, neurotransmitter synthesis and normal red-blood-cell formation. These are established physiological functions, not evidence that extra B6 improves energy, mood or nerve symptoms in someone who already gets enough.

Which foods contain vitamin B6?

Everyday sources include chicken, fish, chickpeas, potatoes, bananas and fortified cereals. A varied diet is generally the preferred way to meet requirements. The NIH Office of Dietary Supplements provides age-specific dietary intake guidance.

How much vitamin B6 do adults need?

Requirements depend on age, sex, pregnancy and breastfeeding. For most adults aged 19–50, the US NIH dietary reference intake is approximately 1.3 mg daily; requirements can be higher in older adults and during pregnancy or lactation. These are dietary reference amounts, not supplement prescriptions. Individual needs and treatment of diagnosed deficiency should be discussed with a qualified health professional.

Can vitamin B6 supplements cause nerve damage?

Yes. Excess supplementary vitamin B6 can cause peripheral neuropathy, which may produce tingling, burning, numbness or altered sensation, often in the hands or feet. The TGA has received reports involving doses below 50 mg daily and people taking several products containing B6. It has not established a universal minimum dose or duration at which this reaction cannot occur. Some cases can be severe or prolonged.

Vitamin B6 may be listed as pyridoxine hydrochloride, pyridoxal 5-phosphate or pyridoxal 5-phosphate monohydrate. Check all products, not just those sold as B-complex: multivitamins, magnesium and zinc combinations may also contain it.

If you develop tingling, burning or numbness while taking supplements containing B6, stop taking them and seek medical advice promptly. Do not take extra B6 in an attempt to treat unexplained nerve symptoms.

What do Australian regulations say?

Australian listed medicines containing more than 10 mg of vitamin B6 per recommended daily dose require a neuropathy warning under existing TGA requirements. This is a labelling threshold, not a guarantee that doses below it are risk-free. In March 2026, the TGA also announced stronger access controls for higher-dose oral B6 products, scheduled to take effect on 1 June 2027. A further consultation on stronger labelling was announced on 14 October 2026. Check the latest official TGA notices for changes.

How to check your total intake from supplements

Collect the labels of every multivitamin, B-complex, magnesium, zinc or other supplement you use.
Find vitamin B6 and its alternative ingredient names. Record the amount per recommended daily dose, not simply per tablet.
Identify repeated B6 across products. Ask a pharmacist to review the combined amount, especially if you use several products.
Follow each product's current label and any medical advice. Do not treat a regulatory maximum as a target intake.
Seek professional advice if you have symptoms, are pregnant, have a medical condition, or take prescription medicines.

Should you take a B-complex supplement?

Not everyone needs one. A supplement may be appropriate when a health professional identifies a specific dietary gap or clinical need. If you are comparing a B-complex product such as PURITYFIC Active Multi B Complex, read the actual current label, check the B6 amount and other ingredients, and ask a pharmacist whether it suits you. No supplement should be presented as a treatment for neuropathy, unexplained fatigue or another medical condition without appropriate evidence and authorisation.

Frequently asked questions

Is vitamin B6 from food dangerous?

Normal dietary intake of vitamin B6 from food is not associated with the neuropathy risk seen with excessive supplemental intake.

Is 50 mg of vitamin B6 always safe?

No. The TGA has reported suspected neuropathy even at doses below 50 mg daily, particularly when several products are combined. There is no known universally safe supplemental dose for every person.