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The Shoulder If someone is giving you a B12 injection in the shoulder, have them make a downward-facing v-shape with your thumb and forefinger over the deltoid (shoulder) muscle

References Neelakantan H

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Self-Administration Training and Protocols For those needing long-term Vitamin B12 injections, self-administration training is often necessary

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If youre using our product, our preferred vitamin B12 injection dosage for adults is 0.3 mL, once a day for at least three months in a row