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It's the result of extensive testing to optimize preservation, safety, and compatibility with injectable medications
Your body might have B12 floating around in your bloodstream, but if it can't get inside the cells where the real work happens, you'll still experience the symptoms of a deficiency
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Adequate intake (AI): AI is the average intake level taken by people who areconsidered Trusted Source PubMed Central Go to sourceto be healthy in studies
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