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B., Haigh, F., Seabrook, A
Absorption problems Even with adequate intake, absorption can be reduced by: Certain gastrointestinal conditions affecting the stomach or small intestine Some medications Age-related reduction in stomach acid (which can affect absorption) Autoimmune gastritis (often historically referred to as pernicious anaemia) This is a well-recognised cause of B12 deficiency and may require ongoing management
Inagaki, T
They require thoughtful formulation design, reliable ingredient sourcing, stable manufacturing systems, and a deep understanding of regulatory and packaging requirements
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