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Image: Christoph Burgstedt/Science Photo Library/Getty Images/Getty Images About the Author Howard E
Because standard gastrointestinal absorption of B12 is highly complex and easily disrupted by age, low stomach acid, medications, and chronic inflammation, therapeutic dosing often needs to be significantly higher than the standard Recommended Daily Allowance (RDA) of 2.4 mcg
This means you need a doctors prescription to legally get it
Expected duration of vitamin B 12 deficiency With proper treatment, symptoms of vitamin B 12 deficiency begin to improve within a few days
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