Vitamin B12 injections are commonly used to support energy levels, red blood cell production, and nervous system health
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Nausea, if present, typically peaks during this transition and improves within 1 to 2 weeks
Samir Sinha, who was not involved in the research, said B12 shots can't provide "a big boost." "Getting B12 shouldn't instantly make you feel great or more powerful," he said
Problems with intrinsic factor binding to ileal receptors in the diseased tissue leads to B12 deficiency
Mild side effects may include pain or redness at the injection site