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my face automatically went a little red

Mild Nausea or Diarrhea Some people report feeling nauseous or having mild diarrhea after getting B12 injections

You should also see an improvement in your mood and mental health

By doing so, you create a robust foundation for sustained energy and mood enhancement

Common side effects of B12 injections These B12 effects tend to resolve on their own within a day or two: Injection site reaction, such as mild soreness, redness, or swelling Brief itching or warmth at the injection area A feeling of fullness or pressure in the muscle Mild headache or nausea shortly after the shot These reactions are typically related to the injection itself, not the vitamin