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Neurologic degeneration associated with nitrous oxide anesthesia in patients with vitamin B12 deficiency

PMID 10448523

Any source that can provide a per-lot COA confirming the five USP test parameters from an identified testing laboratory, matched to the lot number on the vial meets the minimum documentation standard regardless of brand name

The diabetes drug metformin and all the proton pump inhibitors (PPIs) such as omeprazole ( Prilosec ), esomeprazole ( Nexium ), lansoprazole ( Prevacid ) and pantoprazole ( Protonix ) can interfere with vitamin B12 absorption

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