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Improper storage Keep B12 vials in a cool, dark place
Gut microbiome changes: rodent studies indicate altered gut bacteria, with unknown relevance to humans
Plain sterile water is single-use: Unlike BAC water, a plain sterile water vial has no preservative and should be discarded after first puncture
Published online July 31, 2025
Vigorous shaking creates foam and air bubbles that promote aggregation and surface denaturation at the air-liquid interface, which reduces biological activity and introduces inconsistency into subsequent dosing
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