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How long does the B12 shot last
It is a water-based solution that contains benzyl alcohol as a bacteriostatic preservative (often described as 0.9% / 9 mg/mL where stated on label or documentation) and is typically supplied in a multi-dose vial format designed for repeated withdrawals using controlled sterile technique
Safety considerations to keep in mind Vitamin B12 injections are water-soluble, meaning excess amounts are typically excreted by the body
COA verification, lot number matching, third-party HPLC testing, and vendor reputation tracking are standard practice
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