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b12 injections versus oral supplements vs. Intramuscular Vitamin in Vitamin B12 Deficiency • The Blood Project Vitamin B12 | The BMJ
Description
Dosing errors don't announce themselves

Crit Rev Food Sci Nutr 2016;56:494-511

Int J Mol Sci 20:3077
Research suggests this dual action creates cellular conditions that favor energy expenditure over energy storage, giving researchers a tool to study metabolic switching mechanisms
