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doi:10.1001/archinte.165.10.1167
PMCID: PMC4692085
This administration method allows the medication to enter your bloodstream directly, leading to faster and more reliable results
Vegans & Vegetarians Since plant-based diets often lack sufficient B12, monthly injections can prevent deficiencies
B12 does not stack: once your blood level is in the normal range, extra B12 is simply passed out in your urine rather than converted into more energy
[5] By simultaneously providing all these B vitamins, the injection ensures that the body has all necessary co-factors in adequate supply
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