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Neither range comes from a completed human trial, because there isnt one
Digestive disturbances: Symptoms may include loss of appetite, nausea, and diarrhea
Most people notice improvements in energy and symptoms within a few days, but full benefits may take a few weeks depending on how low your levels were before treatment
The most effective way to treat a deficiency, other than reintegrating B12-rich foods into the diet, is through injection
Vitamin B12 supplements are generally considered safe when taken in appropriate dosages
Adults and children over 5 are more likely to have symptoms than younger children
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