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This means AOD 9604 can be used for extended periods without diminishing returns from antibody-mediated inactivation
Food and Drug Administration (FDA) lists vitamin B12 in the Generally Recognized as Safe (GRAS) category and has not set an upper dosage limit
Plus, to learn more about how to check your vitamin B12 status, see: Vitamin B12 Deficiency Test
Michael Greger, Chief Science Officer at NutritionFacts.org, When selecting a B12 supplement, its important to focus on bioavailability
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