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Discard any vial showing signs of contamination, damage, or after 28 days of first use, whichever comes first.
What are the contraindications to B12 (cobalamin) injections in patients with various medical conditions, including allergies, Leber's optic neuropathy, pregnancy, breastfeeding, kidney disease, liver disease, and those taking medications like chloramphenicol (antibiotic)?
Every time you puncture the rubber stopper to draw a dose, you introduce a microscopic pathway for potential contamination
[PMID: 9211321] PubMed record related to this compound for laboratory literature review
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