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Festa, E
They act as critical signaling molecules in the human body and are involved in many physiological functions from hormonal regulation and immune defense to tissue repair and neural communication
Since B12 is primarily found in animal products, those following a vegan or vegetarian diet often need supplementation to avoid a deficiency
Your doctor may prescribe certain medications or vitamin b12 in tablet form for you to digest
Texas A&M University
This means you can feel the effects of the vitamin B12 shot for up to a month
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