Vitamin Overload: Supplements Spark Neuropathy Fears

A woman in Sydney, living with multiple sclerosis, has sounded an alarm regarding popular dietary supplements. She claims that a combination of products, including Blackmores Mega B Complex and Swisse Zinc+, exacerbated her condition, leading to severe neuropathy. Her symptoms reportedly progressed from being able to train for endurance events to struggling with basic mobility and cognitive tasks.

Her physician advised immediate cessation of the vitamins after blood test results indicated they might be contributing to her declining health. Ms. Amir's experience highlights concerns over high dosages of Vitamin B6 found in some supplements, with brands like Swisse containing 30mg and Blackmores containing 50mg, far exceeding the recommended daily intake of 1.1mg to 1.3mg for adults.

This situation has prompted a class action investigation led by Polaris Lawyers, examining claims of injuries sustained from B6 supplements, both individually and in combination with others. Another individual, Dominic Noonan-O'Keeffe, is the lead plaintiff in a suit against Blackmores, alleging nerve pain and cognitive issues from their supplements which contained up to 29 times the recommended B6. He continues to experience lasting effects, including numbness and reduced cognitive ability.

Concerns about B6 toxicity have led Australia's Therapeutic Goods Administration (TGA) to consider requiring supplements with over 50mg of B6 to be stored behind pharmacy counters, a measure that could be implemented by February 2027. Vitamin B6 is essential but can cause peripheral neuropathy, characterized by tingling or numbness, at high doses or with prolonged use, though toxicity can occur even at recommended levels due to individual processing rates.