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Diabetes Care 2010;33:156-61
Therefore, taking a 5000 mcg dose yields about 50 mcg of absorbed B12, which is vastly higher than the daily requirement of 2.4 mcg

Simultaneously, copper ions can oxidize vitamin C, rendering it less potent

Extremely severe vitamin B12 deficiencycase presentation and review of literature

doi: 10.1007/s00784-020-03764-w 84 CribbsD
