reaction to b12 injection uk Delays: Navigating NHS Bureaucracy Too Much B12 Symptoms: Overdose

May be administered subcutaneously or intravenously if recommended by a veterinarian

Other indicators include a family history of pernicious anaemia or other autoimmune conditions (such as type 1 diabetes mellitus, Hashimotos thyroiditis, or Graves disease), or if the patient is taking metformin, proton pump inhibitors (PPIs), H2 antagonists or has a history of nitrous oxide misuse[15]

It is a soap, consisting of salt containing two equivalents of stearate -the anion of stearic acid- and one magnesium cation -Mg2+-

I go into this topic further in my Youtube video about B12: Common risk factors for low vitamin B12 levels in older adults include : Low levels of stomach acid