normal b12 dose injection vitamin once a month Can a patient with a vitamin B12 level Methylcobalamin Injection (Vitamin B12) |

and if shelf life is 28 days, and I am to inject this into his subq once a week

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Confirmed deficiency: if a blood test shows low B12, follow the route your GP advises rather than self-managing, as the cause matters

Also supplied as a lyophilised vial, so it follows the same reconstitution workflow

Fatigue or irregular heartbeat