Vitamin B12 injections are most clinically appropriate in cases of confirmed vitamin B12 deficiency, malabsorption syndromes including pernicious anaemia or post-gastric surgery, significant symptoms where rapid restoration of vitamin B12 levels is required, or failure of oral supplementation due to poor absorption
Alassadi, M.J
It's specifically designed for diluting or reconstituting medications, especially lyophilized (freeze-dried) peptides, before injection
The legitimate medical uses of intravenous infusions may not need a Therapeutic Use Exemption in certain settings (hospital treatment, surgical procedures or clinical investigations)
People often quote first, do no harm as being part of the doctors oath but you might be surprised to learn that the oath doesnt actually say that
It differs from sterile water, which is not presented as a preserved multi-access reagent