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ingestible · for carpal tunnel syndrome

Vitamin B6 (Pyridoxine)

Reviewed by the Nimbera editorial team · Last updated May 2026

A 1996 review (Aufiero et al.) concluded that pyridoxine is not effective as a sole treatment for idiopathic carpal tunnel syndrome but may help as an adjunct by raising the pain threshold, and earlier work linked some cases to genuine B6 deficiency.$8-$15 per month

How to use

If used, take 50-100 mg of pyridoxine daily as an adjunct to splinting and exercises, for no longer than about 3 months before reassessing with your doctor. Do not exceed 100 mg per day. It is most likely to help people with an actual B6 deficiency rather than typical repetitive-strain cases.

How it works

Vitamin B6 is a cofactor for nerve myelin maintenance and neurotransmitter synthesis, and true deficiency can produce nerve irritability. In carpal tunnel syndrome its main proposed benefit is raising the pain threshold and improving pain perception rather than shrinking the swelling inside the tunnel - the evidence for structural benefit is weak.

Where to buy

Any pharmacy or supplement retailer - Nature Made, NOW Foods, or Solgar pyridoxine (B6) tablets.

Typical cost: $8-$15 per month

Safety notes

Important: high-dose B6 can itself cause peripheral nerve damage (sensory neuropathy). Do not exceed 100 mg/day, and do not take it long-term without medical supervision - toxicity can mimic or worsen the very numbness you are trying to treat. B6 interacts with levodopa, phenytoin, and phenobarbital. Evidence for effectiveness is limited and mixed.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

PubMed - Aufiero et al. 1996

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.