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Unlabelled vials introduce dosing errors that compromise research protocols

Oral versions such as capsules or troches are more convenient, but absorption through the digestive tract is far less consistent, so the amount that actually reaches circulation can vary widely

Unlike vitamin B12 deficiency, which is well-recognised and frequently investigated, elevated B12 levels often receive less clinical attention

(Accessed 28th August 2024) 3 Who needs vitamin B12 shots and why

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High-dose B12 supplements, even 1,000 mcg daily, are generally safe because the body uses what it needs and excretes the rest