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Individual factors such as metabolic rate, body weight, and age may theoretically influence how B12 is distributed and utilised, though evidence for their impact on injection intervals is limited https://www.teleta.co.uk/wp-content/uploads/2023/03/hydroxocobalamin-B12-1.png 500mcg Volume:10mg B12 Headache: The Link Between Vitamin B12 and Headaches
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