how to inject b12 Instructions for Injection Choosing the Right Needle and

Keep them in the back of the fridge where temperatures are most stable, not in the door where temperature fluctuates every time you open it

It is also important to note that self-treating with over-the-counter B12 supplements without a confirmed diagnosis may mask symptoms without addressing the root cause, particularly if the deficiency is due to malabsorption rather than dietary insufficiency

this is a medical emergency requiring immediate intervention (epinephrine, etc.)

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Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease

PMID 10554220