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Description
Some drugs, including proton pump inhibitors (PPIs) and histamine 2 receptor antagonists (H2RAs) are acid-inhibiting, impairing the release of dietary B12 from food proteins, thus producing risk of B12 deficiency (Lam et al., 2013)

Choose a pharmacy that follows USP 797 and USP 800 standards for sterile compounding

Link Marcer, D., & Hopkins, S

This means most people get the recommended amounts of these vitamins through diet alone
