vitamin b12 injection im site A Retired RN About Injections Treating Severe Vitamin B12 Deficiency

Many people experience cognitive changes including difficulty concentrating, memory problems, or mental fogginess

Common vitamin b12 injection side effects include pain or swelling at the injection site, mild diarrhea, and itching

The rest of the process is the same, so proceed to the next steps

Vitamin B12 supports the production of red blood cells and aids in cell regeneration

Possible Side Effects Mild side effects of Vitamin B12 may include: ( 12 ) Mild pain, itching, or swelling at the injection site Temporary nausea or headache Mild diarrhea Hot flashes Vomiting These side effects do not affect all patients and are generally temporary and mild While rare, more serious side effects of Vitamin B12 injections can include ( 12 ): Irregular heartbeat Heart palpitations Hives or skin rash If you notice any severe reactions to a Vitamin B12 shot, contact a medical professional immediately