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Its chosen because it effectively fixes vitamin B12 deficiency in most adults
What side effects can Vitamin B12 injections cause
Seek immediate medical help if you develop symptoms of a severe allergic reaction, such as breathing difficulties, confusion, anxiety, clammy skin, and fainting.
According to the NIH Office of Dietary Supplements, B12 plays a key role in: Making red blood cells and preventing megaloblastic anemia Maintaining healthy nerve function and the myelin sheath that protects nerves DNA synthesis Supporting brain function and preventing cognitive decline Converting food into energy (cellular metabolism) Because B12 is found almost exclusively in animal products meat, fish, dairy, and eggs certain groups of people are at much higher risk of deficiency than others
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