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When vial-size variants exist, they remain separate because vial strength, concentration, and syringe-unit calculations can differ
Professional Administration : While some people are trained to administer B12 injections themselves, many prefer to have them administered by a healthcare professional, which can be inconvenient and time-consuming
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Yes, it can be
We used to be able to B12 in vegetables as it was present in the soil, but agricultural practices have diminished the levels of B12 in our soil to the point where it is almost non-existent
National Institutes of Health, Office of Dietary Supplements
