shot injection site pain red b12 What happens if you inject wrong? The 411 on B12 Shots

Heart palpitations Pallid skin Constipation, diarrhea, and gassiness Vision loss Numbness or tingling in the extremities Depression and memory loss Sore tongue Confusion and hallucinations Personality changes Reduced sensitivity to pain or pressure Often these symptoms take several months to a year to develop and recognize, however, if youre a vegan or vegetarian and feel down or fatigued, you may be B12 deficient

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doi:10.1002/lary.26273 Centers for Disease Control and Prevention