See answer: Vitamin B12 shots for energy are used as a placebo. Patients actually feel better if they believe in a treatment, due to both imagination and the true healing powers of the mind-body connection. Lack of energy is not a symptom of Vitamin B12 deficiency. Vitamin B12 is stored in the liver and other body sites. Signs of Vitamin B12 deficiency are anemia and neurological abnormalities
Answered 12/4/2018
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