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Monitoring and Follow-Up After starting vitamin B12 injection therapy , follow-up is critical
For example, a 10 mg vial mixed with 2 mL of BAC water is 5 mg/mL
Seek emergency medical attention (call 999) if you experience: Difficulty breathing or swallowing Swelling of the face, lips, tongue, or throat Widespread rash or hives developing rapidly Severe dizziness or feeling faint Chest tightness or wheezing Anaphylaxis to hydroxocobalamin is uncommon but documented in the product information
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