The finished solution contains 0.9% benzyl alcohol as a preservative and is supplied in a sealed 30ml borosilicate glass vial
Diagnosis typically involves blood tests including full blood count (showing macrocytosis), anti-intrinsic factor antibodies (which are specific for pernicious anaemia), and sometimes anti-parietal cell antibodies
Treats B12 Deficiency: Effectively brings vitamin B12 levels back up when they have dropped due to poor dietary intake or intestinal malabsorption
A few picky ones need something different (acetic acid water for peptides that aggregate at this pH, or sodium chloride solution for specific applications)
The calculators recommended split at 4 mg and above is every 3 days (q3d): each shot carries three-sevenths of the weekly dose across about 2.3 injections a week, which cuts the peak-to-trough swing to roughly 43% of the weekly swing
Laboratory evidence: A serum B12 level confirming deficiency, or prior documentation of intrinsic factor antibodies for pernicious anemia