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What we take from the market as supplements usually have a very low amount of usable Vitamin B12 in them, and the main reason for that is fermentation

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These differences help explain several characteristics that initially surprise many researchers: its distinctive orange appearance, its classification as a small molecule, its enzyme-targeted mechanism, and the style of laboratory documentation commonly supplied with it

The dry powder is stable, but freezing reconstituted product is not recommended

sold only as research chemicals or supplements in many regions