Animal-based foods: Clams, sardines, beef liver, tuna, salmon, dairy, and eggs, are highest
(June 1998)
If a multi-dose vial is opened, discard per protocol to avoid contamination
In this article youll learn why supplements and injections raise B12 and why that is harmless, how B12 travels in the blood and why a total number can mislead, what an unexplained elevation can point to, what functional deficiency means despite a high result, what a doctor does next, and when to seek advice
Individuals allergic to cobalt should also avoid vitamin B12 injections
For this reason, you may still feel tired and fatigued, even a month or two into your B12 injections