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Its important to note that for individuals who already have normal B12 levels, scientific evidence does not support the idea that B12 injections will further increase energy or provide a significant energy boost. Your body will simply eliminate any excess B12 it doesnt need
Keep a symptom journal to note improvements in energy, mood, sleep, or focus
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Typically, the positive effects last from about a week up to a month, though this can vary based on how your body absorbs and utilizes the vitamin, as well as your overall health
How long will the effects of a B12 shot last
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