b12 injections adverse reactions What Happens When You're Allergic to Vitamin Hydroxocobalamin (B12) Injection, 2mg/mL |

Common side effects associated with B12 supplementation include: Local injection site reactions (for intramuscular preparations): Pain, redness, or swelling at the injection site Mild bruising or tenderness Itching localised to the injection area These reactions are usually self-limiting and resolve within 2448 hours

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Return expired or unused medication to a pharmacy take-back site or follow local regulations

Together with a study in California, there is data on about 10,000 people in total

The peptide vial should be unsealed and the rubber stopper disinfected with an alcohol swab to protect against contamination