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Why Absorption Drops as the Dose Goes Up This detail surprises people, so it is worth spelling out
There are many different types of vitamin B12 available, including: cyanocobalamin methylcobalamin adenosylcobalamin hydroxycobalamin While cyanocobalamin is the Vitamin B12 supplements are available in a wide range of doses as well, including high dose supplements with 1,000 mcg to 2,000 mcg per serving
Sources & references Peer-reviewed research Peer-reviewed research bibliography is not maintained for this product line (e.g
Petersen JA, Wilm BJ, von Meyenburg J, Schubert M, Seifert B, Najafi Y, et al
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