But only a maximum of 5mcg of B12 enters the bile every day (according to "Advanced Haematology" 7th edition textbook, page 60), so it seems that only an additional 5mcg would be lost daily if none was recovered
Cells characterized by rapid division (epithelial cells, bone marrow, myeloid cells) appear to have the greatest requirement for cyanocobalamin
Doing so can put you at risk of vitamin A toxicity
Can the same bacteriostatic water vial be used for several peptides
Evidence: What does the current research actually support, and how preliminary is it
B12 injections go straight into your muscle and bloodstream, so your body takes up most of the dose, while oral B12 has to pass through your digestive system first, where only a small fraction of a tablet gets absorbed