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Users report improvements in digestive symptoms, reduced bloating, and better nutrient absorption

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The average daily intake of vitamin B-12, as recommended by the Office of Dietary Supplements, is 2.4 micrograms (mcg) for men and women over 14

We searched for articles published between January 2010 and June 2018, using the following key words or associations: vitamin B12, cobalamin, vitamin B12 deficiency, cobalamin deficiency, oral vitamin B12, oral cobalamin, oral vitamin B12 therapy, oral cobalamin therapy, Biermers disease, pernicious anemia

"Cobalamin-responsive psychosis as the sole manifestation of vitamin B12 deficiency"