The provider's assessment, not the lab morphology, determines whether D50.x or D56.x applies
Also acidic drinks help
You inject it subcutaneously at home, daily, for weeks at a time
Although cyanocobalamin is more readily absorbed, much of it is excreted through the urine before it can reach the cells Cyanocobalamin vs Hydroxocobalamin In comparison to hydroxocobalamin, cyanocobalamin has a significantly worse absorption rate and storability, which is why today mostly hydroxocobalamin is used in B12 injections
Additionally, B12 shots may help improve metabolism, aiding in weight loss efforts
[1] However, any pronounced color change (for example, turning brown) or development of a precipitate should be treated with caution