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Cyanocobalamin injection, USP: Package insert
It survives exposure to stomach acid for over 24 hours, remains active across a wide pH range, and resists degradation by digestive enzymes
Prescription requires licensed clinician approval if deemed medically appropriate
Here are some medications that can lower your B12 levels: Metformin
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8 A case-control study that compared 25,956 patients who had vitamin B 12 deficiency with 184,199 control patients found a significantly increased risk of vitamin B 12 deficiency in patients who had taken proton pump inhibitors (odds ratio = 1.65) or histamine H 2 blockers (odds ratio = 1.25) for at least two years
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