Consuming too much in supplements or fortified foods such as energy drinks can damage peripheral nerves and, in extreme cases, impair motor function
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In January Guardian Australia told the story of Simon Bogemann who developed a nerve condition known as peripheral neuropathy after consuming excessive vitamin B6 from multivitamin and magnesium supplements.
Since then, the potential of these over-the-counter supplements to cause harm has attracted increasing attention.
An interim decision from the Therapeutic Goods Administration proposes changes that could see products containing more than 50mg of vitamin B6 become pharmacist-only medicines.
