how do you give vitamin b12 injection to a Injection: Step-By-Step Instructions Safe B12 Injection Guide at
Description
Independent assay testing provides confidence that the labelled amount corresponds closely to the actual contents
Your body needs intrinsic factor to absorb vitamin B12 from the food you eat
So injecting beyond a certain point may cause your cells to fight off the excess B12 so hard that it might reduce the amount of active cellular B12 - probably not to dangerous levels, but possibly sufficient to trigger some symptoms
Oral or parenteral therapy for B12 deficiency
(PubMed) Bauman WA, Shaw S, Jayatilleke E, Spungen AM, Herbert V
