To absorb B12 from food or from a pill, your body needs three things working together: Stomach acid , which releases B12 from the protein it is bound to Intrinsic factor , a protein your stomach lining makes that escorts B12 through your gut A healthy small intestine , specifically the last section, where B12 is finally taken in Should even one of these three steps break down, absorbing B12 from a tablet becomes difficult
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Below are some of the main ways you can get more vitamin B12 in your system: Diet : Animal products like poultry, meat, fish, eggs, and milk contain vitamin B12
Use body composition, symptoms, nutrition, medications, and labs together instead of relying on one marker