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Rare anaphylactoid symptoms (facial pallor, blood pressure drop) may occur, so monitor the patient closely, and avoid nerves and blood vessels during IM injection
It contains benzyl alcohol, preventing contamination during multiple vial withdrawals
For physiological reasons, dietary vitamin B12 generally cannot cause hypercobalaminemia
Sources & Research Papers Numbered citation list with PubMed, NEJM, Lancet, and ClinicalTrials.gov links
The staffs are very friendly and very attentive, making me feel comfortable
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