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Description
If your goal is sharper thinking during demanding activities, B12 energy for mental performance is a common reason people add injections to their routine

These can include taking oral dietary supplements and now even a new form of prescription vitamin B12 medication available in gel form

World Journal of Gastroenterology

If you don't get enough, you may experience symptoms of deficiency like fatigue, weakness, or nerve damage
Goodman clarifies

These include the severity of deficiency, patient age, and malabsorption issues
