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They are not intended for human consumption, clinical use, diagnostic use, therapeutic use, veterinary use, cosmetic use, or dietary supplement use
doi: 10.1053/j.gastro.2007.03.054 7 HolstJJKnopFKVilsbllTKrarupTMadsbadS
People who take certain medications may also be at risk of vitamin B12 deficiency, including, but not limited to, estrogen, H2 receptor antagonists, PPIs (Proton Pump Inhibitors), Chloramphenicol, and Metformin
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