All of this is causing great pain to people who suffer from pernicious anemia or another type of gastric B12 malabsorption
How has this lack of a standardized definition impacted you
What Are the Common Side Effects of B12 IV Infusions
For people with B12 deficiencies, which can result in symptoms like fatigue, weakness, or even cognitive issues, B12 shots can provide a much-needed energy boost
Side effects of B12 injections Some people may experience side effects following injections with the cyanocobalamin form of B12, such as nausea, headaches, vomiting, itching, and dizziness
Journal of Neurology, Neurosurgery, and Psychiatry 73 (3): 246249