A member asked:

I have an unopened vial of cyanocobalamin that is a couple years expired. what would happen if i used it?

A doctor has provided 1 answer

Dr. Edward Goldberg answered

DO NOT USE IT: Never use expired medication for any purpose, especially injectable medications.

Dr Ali agreed

Answered 9/29/2012

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A member asked:

I have an unopened vial of cyanocobalamin that is a couple years expired. what would happen if i used it?

A doctor has provided 1 answer

Dr. Edward Goldberg answered

Dr Ali agreed

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