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Vitamin B12 deficiency results in megaloblastic anemia, GI lesions, and neurologic damage (which begins with an inability to produce myelin and is followed by gradual degeneration of the axon and nerve head)
* Prescription products require an online evaluation with a licensed medical professional who will determine if a prescription is appropriate
repletion reverses hematologic symptoms within days and neurologic sequelae over weeks, reflecting differential tissue turnover
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