[DOI] [PubMed] [Google Scholar] 33.Veljaca M, Lesch CA, Pllana R, Sanchez B, Chan K, Guglietta A
Terushkin , a board-certified, fellowship-trained surgeon with over a decade of experience, we provide accurate information to empower your health decisions
When given by intramuscular injection, the dose bypasses the digestive tract and is absorbed reliably, which matters because dietary B12 absorption depends on stomach acid and a protein called intrinsic factor, both of which decline with age, medication and certain gut conditions
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Do not leave the vial out for extended periods, and always return it to the refrigerator immediately after drawing your dose