b12 injection im vs sq How to self-inject intramuscular vitamin - Overview Vitamin B12 Injection Methods: Choosing

The larger the volume of a shot, the more pressure effect/tissue stretching effect that may occur and in a sensitive child cause a feeling of discomfort

If you've been feeling constantly run down, even after a good night's sleep, B12 injections can significantly reduce that tiredness and restore your energy levels

And since the nutrient is water soluble, you cant take in too much

The Centers for Disease Control and Prevention (CDC) states that if a multi-dose vial has been opened or accessed (e.g., needle-punctured) the vial should be dated and discarded within 28 days unless the manufacturer specifies a different (shorter or longer) date for that opened vial