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People with Fatigue: If you experience chronic tiredness despite adequate sleep, B12 injections may help improve your energy levels
(2015) Effect of vitamin B-12 and n-3 polyunsaturated fatty acids on plasma homocysteine, ferritin, C-reaction protein, and other cardiovascular risk factors: a randomized controlled trial
Johns Hopkins Medicine
6 to 8 hours of fasting is required before the tests
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