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Common Causes of B12 Deficiency Vitamin B12 deficiency can happen for many reasons
Hydroxocobalamin | Drugs | BNF
As it is not naturally present in fruit, vegetables, and grains, vegans may not get sufficient amounts of vitamin B12 in their diet
It has the molecular formula C 78 H 123 N 23 O 23 S 2 , a molecular weight of 1,815.1 g/mol, and CAS number 221231-10-3, and contains an intramolecular disulfide bridge that constrains its conformation
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