A member asked:

Can u be allergic 2 vitamina b12 like breaklng out n a rasgo?

5 doctors weighed in across 2 answers

Possibly: People occasionally develop allergies to certain brands of vitamin supplements. It is not likely to develop an allergy to vitamin B12 itself.

Answered 12/26/2018

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Other contents: B12 preparation contains other chemicals also and you may be allergic to one of those contents. Your doctor may prescribe you a different brand to avoid negative reaction.

Answered 1/3/2019

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