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It is vital for red blood cell production, and maintaining a healthy nervous system, and plays a key role in DNA synthesis
For those who cannot, a doctor People can take B12 supplements in the form of oral tablets, sublingual tablets that dissolve under the tongue, or injections
For malabsorption (e.g., pernicious anemia), injections are often preferred, though some clinicians still use very high-dose oral regimens (NIH ODS)
How Do I Know If Im Absorbing Oral B12 Properly
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