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Just a few skin reactions you might notice include: Hives Itching Red, swollen, blistered, or peeling skin with or without fever Skin rash Inform your healthcare provider immediately if you experience anything unusual while taking B12 injections

Always follow your institutions safety and documentation protocols

Draw vitamin B12 from the vial into your syringe

pharmacies will dispense it only with a valid prescription from a licensed healthcare provider

If you already have a diagnosed deficiency under NHS care and your symptoms return before your next scheduled dose, that is a conversation to have with your GP, who can review the schedule