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Is There an Injectable Vitamin D

doi: 10.2105/AJPH.2015.302773

This enzymatic reaction consumes both nicotinamide and SAM, leading to depletion of NAD+ storesa critical coenzyme required for cellular energy production, DNA repair, and metabolic regulation

Many studies have been done to prove that hydroxocobalamin is a better form of vitamin B12, however, due to increased cost it is not used as often

(Comprehensive review detailing the inter-related roles of B-complex vitamins in cellular metabolism, energy production, and neurological function)
