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Absorbed vitamin B 12is transported via specific B 12binding proteins, transcobalamin I and II to the various tissues
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Shaking can damage the peptide
This content should not be interpreted as medical advice, a recommendation for treatment, or evidence of established clinical effectiveness
The post-opening discard period exists because: Sterility can no longer be fully guaranteed after first puncture Preservatives slow microbial growth but do not eliminate contamination risk Risk of contamination increases with repeated vial access For this reason, healthcare and laboratory settings typically follow a fixed discard timeframe (commonly 28 days), unless otherwise specified by the manufacturer
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