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Vitamins and minerals

Pyridoxine

Also sold as: Benadon

No prescription neededVitamins and minerals
Comes as:TabletInjection

Usual adult dose

Usual adult dose: 10 to 50 mg once a day. With isoniazid (TB treatment) 10 to 25 mg a day is usually given to protect the nerves. Do not take more than 100 mg a day for long periods unless a doctor advises.

Your doctor may give you a different dose. Children's doses depend on weight.

Side effects

Common

  • nausea
  • mild stomach upset

Serious — get help

Stop taking it and see a doctor straight away if you notice:

  • numbness or tingling in hands and feet with long-term high doses

Do not take it, or take care, if

  • People taking levodopa without carbidopa
  • Long-term high doses (nerve damage risk)

Interactions

Medicines that can react with this one.

Minor2 medicinesUsually not a problem, but tell your doctor.
  • Isoniazid

    Pyridoxine is usually given with isoniazid on purpose to prevent nerve damage; this is a helpful combination.

  • Phenytoin

    High doses of pyridoxine can lower phenytoin levels.

Pregnancy

  1. A
  2. B
  3. C
  4. D
  5. X

Category A

Studies in pregnant women show no risk to the baby.

Generic alternatives

Similar medicines your doctor or pharmacist may offer instead.

  • Vitamin B complexNo prescription needed
Check with my other medicines

Always follow your doctor or pharmacistThis page is general information, not a prescription. Do not start, stop or change a medicine on your own.