MIC+B12 side effects and what's normal
MIC B12 side effects, sore after my shot, is this normal MICC, nauseous after injecting, reaction, arm hurts after B12 shot
Belle Answers · MIC+B12 · Updated Oct 2, 2026
MIC+B12 side effects are rare and typically mild.
Common and usually temporary
- Slight discomfort, redness, or tenderness at the injection site
- Mild nausea
Contact us if
- You have redness, swelling, or persistent pain at the injection site that isn't settling
- You notice signs of an allergic reaction such as rash, difficulty breathing, or swelling of the face. Seek emergency care first for breathing difficulty or facial swelling
- You have any unexpected side effects or concerns about your medication
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Education only, not medical advice.