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Common adverse effects observed in clinical trials include nausea, vomiting, injection site reactions, increased heart rate, and hypoglycaemia risk
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Pregnant and breastfeeding individuals need careful dosing, as B12 supports fetal nervous system development
Plain sterile water has no preservative, so anything inside the vial after the first needle stick is at much higher risk of bacterial growth
Untreated vitamin B12 deficiency can lead to various physical, neurological, and psychological issues
& Liu, B
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