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For 500mcg: draw to the 20 unit mark (0.20ml)

For those with no known deficiencies or contraindications, vitamin B12 shots are often considered unnecessary and may not provide additional benefits

You've rolled up your sleeve, received your B12 injection, and now you're wondering: how long will it last

However, it is always recommended to consult with a healthcare professional before starting any new supplement regimen

Journal of the neurological sciences , 233 (1-2), 9397

Your provider can help determine whether a B12-only injection or a broader lipotropic blend is more appropriate for your goals and health history