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However, they should first discuss this with a healthcare professional.

Likewise, autoimmune conditions that affect the stomach lining, such as atrophic gastritis or pernicious anemia, directly impact intrinsic factora protein essential for B12 absorption

Int J Hematol

Oral supplementation of B12, unlike the injection, must be given every day

The main difference between methylcobalamin and cyanocobalamin is that methylcobalamin is the naturally-occurring form of vitamin B12 that comes through either food sources or supplements, whereas cyanocobalamin is the synthetic form of vitamin B12 that occur only in supplements