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Lastly, HB12 is sometimes prescribed if methyl B12 and Adenosyl B12 are not tolerated

Ideally you have been diagnosed as being B12 deficient by your doctor and have had the relevant blood tests to confirm this before beginning this treatment

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How long is a typical cycle

If you are like most people, this might be one of the first times you are hearing about this issue

Cyanocobalamin is a synthetic form of vitamin B12 found only in supplements, while Methylcobalamin is a naturally occurring form that you can get through either food sources or supplements