what are side effects of b12 injections Vitamin Injections: You Need To Know Vitamin B12 Injections | Energy

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This prescription-strength B12 injection is typically used as a maintenance therapy and is often dosed at 1 mL once a month

Bacteriostatic water used for reconstitution should be discarded after 28 days to prevent pH shifts from bacterial growth

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Post-injection care is straightforward: Stay hydrated for the remainder of the day Avoid rubbing or massaging the injection site aggressively Apply a cold compress if swelling or soreness develops at the injection site Monitor for signs of allergic reaction (hives, difficulty breathing, dizziness) for at least 30 minutes Contact your provider or seek emergency care if you experience chest tightness, significant swelling, or breathing difficulty Strenuous exercise can resume the same day for most patients, though some prefer to wait until the following morning if injection-site soreness is noticeable