b12 injections lung cancer Compounded Cyanocobalamin (Vitamin B12) Injection Frontiers | Lung cancer vaccine
Description
it is not FDA-approved and not for human consumption

Angioimmunoblastic t-cell lymphoma presenting as purpura fulminans

doi:10.1093/ajcn/86.5.1563S
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Evidence for a U-Shaped Relationship Between Prehospital Vitamin D Status and Mortality: A Cohort Study

Yes, B12 injections are generally very safe when administered by trained professionals
