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doi: 10.1111/os.13009

But only a maximum of 5mcg of B12 enters the bile every day (according to "Advanced Haematology" 7th edition textbook, page 60), so it seems that only an additional 5mcg would be lost daily if none was recovered

Broad preclinical activity can be scientifically interesting without automatically translating into safe, predictable, clinically meaningful human outcomes

You have no B12 deficiency symptoms
Most protocols screen for active malignancy before starting
