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doi:10.1111/ejh.12237 Dixon N, Kishnani PS, Zimmerman S
Here are some key considerations: Allergic Reactions : If you have a history of allergic reactions to cobalt, cyanocobalamin, or any other ingredients in the injection, inform your healthcare provider before starting treatment
Without an intrinsic factor, oral B12 cannot be absorbed
The cyanide produced from the metabolism of cyanocobalamin is not lethal but it will still require effort and energy by the body to get rid of it
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