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After ingestion, stomach acid separates B12 from food proteins, and then intrinsic factor produced in the stomach lining binds to B12 so it can be absorbed in the ileum (the final section of the small intestine)

Sometimes, stomach pain is more severe before eating, while at other times, it intensifies after a meal

Clinical trials involving approximately 900 participants found that the adverse event profile was indistinguishable from placebo for most parameters

Return policy requires detailed documentation to verify the legitimacy of quality concerns and compliance with regulatory tracking requirements

doi: 10.3390/genes12050782