why is pernicious anemia treated with injections of b12 (Rare Cause Vitamin Deficiency) Pernicious Anaemia - What You

When the stores have been depleted, the final stages of deficiency are often quite rapid, resulting in death in a period of months if left untreated. Oral B12 research Patients during the crisis are now regularly told that they can in fact absorb B12 from cyanocobalamin tablets and yet: A review from Cochrane

A study on menstruation of Indian adolescent girls in an urban area of South India Journal of Family Medicine and Primary Care, 2018

Hemolytic anemia, when too many red blood cells get broken down at the same time, also produces a bilirubin surplus that may taint urine

The phospholipids are also dependent on methylation (22 24)

The benzyl alcohol acts as a bacteriostatic agent

So often we do think: This makes sense, so surely it will cross over into the literature. And the truth is, we don't really have the evidence to support that exact recommendation