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While B12 injections are generally safe, side effects like redness, swelling, or pain can occur
Some contraindications (reasons not to take B12 shots) include: Allergies to cyanocobalamin or methylcobalamin Kidney or liver disease Eye issues, especially if you have Lebers disease A current infection If youre taking medication related to bone marrow You should talk to your doctor about the above conditions before getting B12 injections
( Djadjo, S., & Bajaj, T
If youd like to learn more about all forms of B12, we wrote extensively about them
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