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While all Vitamin B12 injections serve the same purpose of delivering the essential nutrient, they can differ in factors such as formulation, dosage, and administration method
If you do not feel a dramatic change in the first 48 hours, that is completely normal and does not mean the shot is not working
Suppose you get vitamin B12 injections weekly or monthly and take oral adenosylcobalamin or hydroxocobalamin
It is important to note that B12 injections should only be used when there is a diagnosed deficiency or clear clinical indication
The 28-day discard window starts at first puncture and applies regardless of remaining volume
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