what are the negatives of b12 injections Shots: Vitamin B12 Benefits, Uses, Risks Vitamin B12 Injection Side Effects
Description
If you suspect sensitivity to a particular B12 preparation, discuss switching formulations with your GP or pharmacist

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B12 deficiency has been found to be reasonable common affecting between 1.5% and 15% of the general population

Anti-aging effects: Increased activity of NNMT is associated with aging processes
(National Academy Press) Scalabrino G