how to inject yourself with b12 Injections at Home - Safety Guide for Self-Administration How To Self-Inject B12

It is used : - by intramuscular injection to make up for vitamin B12 deficiencies that the body no longer absorbs, in people suffering from Biermer's disease or Imerslund's disease, or who have had their stomach or part of their intestine removed

Current concepts in cobalamin deficiency

Suppressed lipogenesis The same work showed NNMT inhibition suppressing lipogenesis in fat cells, consistent with the shift away from fat storage [1]

Not sure if this is mostly from change in diet or from the injections on their own, but it seems to be helping so far

You might also need a diagnosis for conditions like pernicious anaemia , an autoimmune issue that stops your body from absorbing B12 from food

The answer is that it really depends, but in my experience, MOST patients are fine to use subcutaneous injection-sized needles